mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2025-02-09 13:33:17 +00:00
9156c5e3ba
inttoptr or ptrtoint cast provided there is datalayout available. Eventually, the datalayout can just be required but in practice it will always be there today. To go with the ability to expose available values requiring a ptrtoint or inttoptr cast, helpers are added to perform one of these three casts. These smarts are necessary to finish canonicalizing loads and stores to the operational type requirements without regressing fundamental combines. I've added some test cases. These should actually improve as the load combining and store combining improves, but they may fundamentally be highlighting some missing combines for select in addition to exercising the specific added logic to load analysis. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@220277 91177308-0d34-0410-b5e6-96231b3b80d8
1440 lines
39 KiB
LLVM
1440 lines
39 KiB
LLVM
; RUN: opt < %s -instcombine -S | FileCheck %s
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; This test makes sure that these instructions are properly eliminated.
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; PR1822
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target datalayout = "e-p:64:64-p1:16:16-p2:32:32:32-p3:64:64:64"
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define i32 @test1(i32 %A, i32 %B) {
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%C = select i1 false, i32 %A, i32 %B
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ret i32 %C
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; CHECK-LABEL: @test1(
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; CHECK: ret i32 %B
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}
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define i32 @test2(i32 %A, i32 %B) {
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%C = select i1 true, i32 %A, i32 %B
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ret i32 %C
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; CHECK-LABEL: @test2(
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; CHECK: ret i32 %A
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}
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define i32 @test3(i1 %C, i32 %I) {
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; V = I
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%V = select i1 %C, i32 %I, i32 %I
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ret i32 %V
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; CHECK-LABEL: @test3(
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; CHECK: ret i32 %I
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}
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define i1 @test4(i1 %C) {
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; V = C
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%V = select i1 %C, i1 true, i1 false
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ret i1 %V
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; CHECK-LABEL: @test4(
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; CHECK: ret i1 %C
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}
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define i1 @test5(i1 %C) {
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; V = !C
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%V = select i1 %C, i1 false, i1 true
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ret i1 %V
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; CHECK-LABEL: @test5(
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; CHECK: xor i1 %C, true
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; CHECK: ret i1
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}
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define i32 @test6(i1 %C) {
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; V = cast C to int
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%V = select i1 %C, i32 1, i32 0
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ret i32 %V
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; CHECK-LABEL: @test6(
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; CHECK: %V = zext i1 %C to i32
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; CHECK: ret i32 %V
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}
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define i1 @test7(i1 %C, i1 %X) {
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; R = or C, X
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%R = select i1 %C, i1 true, i1 %X
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ret i1 %R
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; CHECK-LABEL: @test7(
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; CHECK: %R = or i1 %C, %X
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; CHECK: ret i1 %R
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}
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define i1 @test8(i1 %C, i1 %X) {
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; R = and C, X
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%R = select i1 %C, i1 %X, i1 false
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ret i1 %R
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; CHECK-LABEL: @test8(
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; CHECK: %R = and i1 %C, %X
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; CHECK: ret i1 %R
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}
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define i1 @test9(i1 %C, i1 %X) {
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; R = and !C, X
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%R = select i1 %C, i1 false, i1 %X
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ret i1 %R
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; CHECK-LABEL: @test9(
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; CHECK: xor i1 %C, true
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; CHECK: %R = and i1
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; CHECK: ret i1 %R
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}
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define i1 @test10(i1 %C, i1 %X) {
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; R = or !C, X
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%R = select i1 %C, i1 %X, i1 true
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ret i1 %R
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; CHECK-LABEL: @test10(
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; CHECK: xor i1 %C, true
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; CHECK: %R = or i1
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; CHECK: ret i1 %R
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}
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define i32 @test11(i32 %a) {
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%C = icmp eq i32 %a, 0
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%R = select i1 %C, i32 0, i32 1
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ret i32 %R
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; CHECK-LABEL: @test11(
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; CHECK: icmp ne i32 %a, 0
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; CHECK: %R = zext i1
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; CHECK: ret i32 %R
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}
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define i32 @test12(i1 %cond, i32 %a) {
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%b = or i32 %a, 1
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%c = select i1 %cond, i32 %b, i32 %a
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ret i32 %c
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; CHECK-LABEL: @test12(
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; CHECK: %b = zext i1 %cond to i32
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; CHECK: %c = or i32 %b, %a
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; CHECK: ret i32 %c
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}
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define i32 @test12a(i1 %cond, i32 %a) {
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%b = ashr i32 %a, 1
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%c = select i1 %cond, i32 %b, i32 %a
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ret i32 %c
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; CHECK-LABEL: @test12a(
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; CHECK: %b = zext i1 %cond to i32
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; CHECK: %c = ashr i32 %a, %b
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; CHECK: ret i32 %c
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}
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define i32 @test12b(i1 %cond, i32 %a) {
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%b = ashr i32 %a, 1
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%c = select i1 %cond, i32 %a, i32 %b
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ret i32 %c
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; CHECK-LABEL: @test12b(
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; CHECK: zext i1 %cond to i32
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; CHECK: %b = xor i32
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; CHECK: %c = ashr i32 %a, %b
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; CHECK: ret i32 %c
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}
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define i32 @test13(i32 %a, i32 %b) {
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%C = icmp eq i32 %a, %b
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%V = select i1 %C, i32 %a, i32 %b
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ret i32 %V
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; CHECK-LABEL: @test13(
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; CHECK: ret i32 %b
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}
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define i32 @test13a(i32 %a, i32 %b) {
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%C = icmp ne i32 %a, %b
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%V = select i1 %C, i32 %a, i32 %b
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ret i32 %V
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; CHECK-LABEL: @test13a(
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; CHECK: ret i32 %a
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}
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define i32 @test13b(i32 %a, i32 %b) {
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%C = icmp eq i32 %a, %b
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%V = select i1 %C, i32 %b, i32 %a
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ret i32 %V
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; CHECK-LABEL: @test13b(
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; CHECK: ret i32 %a
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}
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define i1 @test14a(i1 %C, i32 %X) {
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%V = select i1 %C, i32 %X, i32 0
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; (X < 1) | !C
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%R = icmp slt i32 %V, 1
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ret i1 %R
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; CHECK-LABEL: @test14a(
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; CHECK: icmp slt i32 %X, 1
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; CHECK: xor i1 %C, true
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; CHECK: or i1
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; CHECK: ret i1 %R
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}
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define i1 @test14b(i1 %C, i32 %X) {
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%V = select i1 %C, i32 0, i32 %X
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; (X < 1) | C
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%R = icmp slt i32 %V, 1
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ret i1 %R
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; CHECK-LABEL: @test14b(
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; CHECK: icmp slt i32 %X, 1
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; CHECK: or i1
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; CHECK: ret i1 %R
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}
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;; Code sequence for (X & 16) ? 16 : 0
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define i32 @test15a(i32 %X) {
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%t1 = and i32 %X, 16
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%t2 = icmp eq i32 %t1, 0
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%t3 = select i1 %t2, i32 0, i32 16
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ret i32 %t3
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; CHECK-LABEL: @test15a(
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; CHECK: %t1 = and i32 %X, 16
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; CHECK: ret i32 %t1
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}
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;; Code sequence for (X & 32) ? 0 : 24
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define i32 @test15b(i32 %X) {
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%t1 = and i32 %X, 32
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%t2 = icmp eq i32 %t1, 0
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%t3 = select i1 %t2, i32 32, i32 0
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ret i32 %t3
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; CHECK-LABEL: @test15b(
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; CHECK: %t1 = and i32 %X, 32
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; CHECK: xor i32 %t1, 32
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; CHECK: ret i32
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}
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;; Alternate code sequence for (X & 16) ? 16 : 0
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define i32 @test15c(i32 %X) {
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%t1 = and i32 %X, 16
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%t2 = icmp eq i32 %t1, 16
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%t3 = select i1 %t2, i32 16, i32 0
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ret i32 %t3
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; CHECK-LABEL: @test15c(
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; CHECK: %t1 = and i32 %X, 16
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; CHECK: ret i32 %t1
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}
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;; Alternate code sequence for (X & 16) ? 16 : 0
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define i32 @test15d(i32 %X) {
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%t1 = and i32 %X, 16
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%t2 = icmp ne i32 %t1, 0
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%t3 = select i1 %t2, i32 16, i32 0
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ret i32 %t3
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; CHECK-LABEL: @test15d(
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; CHECK: %t1 = and i32 %X, 16
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; CHECK: ret i32 %t1
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}
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;; (a & 128) ? 256 : 0
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define i32 @test15e(i32 %X) {
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%t1 = and i32 %X, 128
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%t2 = icmp ne i32 %t1, 0
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%t3 = select i1 %t2, i32 256, i32 0
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ret i32 %t3
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; CHECK-LABEL: @test15e(
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; CHECK: %t1 = shl i32 %X, 1
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; CHECK: and i32 %t1, 256
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; CHECK: ret i32
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}
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;; (a & 128) ? 0 : 256
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define i32 @test15f(i32 %X) {
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%t1 = and i32 %X, 128
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%t2 = icmp ne i32 %t1, 0
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%t3 = select i1 %t2, i32 0, i32 256
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ret i32 %t3
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; CHECK-LABEL: @test15f(
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; CHECK: %t1 = shl i32 %X, 1
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; CHECK: and i32 %t1, 256
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; CHECK: xor i32 %{{.*}}, 256
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; CHECK: ret i32
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}
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;; (a & 8) ? -1 : -9
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define i32 @test15g(i32 %X) {
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%t1 = and i32 %X, 8
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%t2 = icmp ne i32 %t1, 0
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%t3 = select i1 %t2, i32 -1, i32 -9
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ret i32 %t3
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; CHECK-LABEL: @test15g(
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; CHECK-NEXT: %1 = or i32 %X, -9
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; CHECK-NEXT: ret i32 %1
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}
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;; (a & 8) ? -9 : -1
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define i32 @test15h(i32 %X) {
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%t1 = and i32 %X, 8
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%t2 = icmp ne i32 %t1, 0
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%t3 = select i1 %t2, i32 -9, i32 -1
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ret i32 %t3
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; CHECK-LABEL: @test15h(
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; CHECK-NEXT: %1 = or i32 %X, -9
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; CHECK-NEXT: %2 = xor i32 %1, 8
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; CHECK-NEXT: ret i32 %2
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}
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;; (a & 2) ? 577 : 1089
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define i32 @test15i(i32 %X) {
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%t1 = and i32 %X, 2
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%t2 = icmp ne i32 %t1, 0
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%t3 = select i1 %t2, i32 577, i32 1089
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ret i32 %t3
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; CHECK-LABEL: @test15i(
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; CHECK-NEXT: %t1 = shl i32 %X, 8
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; CHECK-NEXT: %1 = and i32 %t1, 512
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; CHECK-NEXT: %2 = xor i32 %1, 512
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; CHECK-NEXT: %3 = add nuw nsw i32 %2, 577
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; CHECK-NEXT: ret i32 %3
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}
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;; (a & 2) ? 1089 : 577
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define i32 @test15j(i32 %X) {
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%t1 = and i32 %X, 2
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%t2 = icmp ne i32 %t1, 0
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%t3 = select i1 %t2, i32 1089, i32 577
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ret i32 %t3
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; CHECK-LABEL: @test15j(
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; CHECK-NEXT: %t1 = shl i32 %X, 8
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; CHECK-NEXT: %1 = and i32 %t1, 512
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; CHECK-NEXT: %2 = add nuw nsw i32 %1, 577
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; CHECK-NEXT: ret i32 %2
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}
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define i32 @test16(i1 %C, i32* %P) {
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%P2 = select i1 %C, i32* %P, i32* null
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%V = load i32* %P2
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ret i32 %V
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; CHECK-LABEL: @test16(
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; CHECK-NEXT: %V = load i32* %P
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; CHECK: ret i32 %V
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}
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define i1 @test17(i32* %X, i1 %C) {
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%R = select i1 %C, i32* %X, i32* null
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%RV = icmp eq i32* %R, null
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ret i1 %RV
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; CHECK-LABEL: @test17(
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; CHECK: icmp eq i32* %X, null
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; CHECK: xor i1 %C, true
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; CHECK: %RV = or i1
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; CHECK: ret i1 %RV
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}
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define i32 @test18(i32 %X, i32 %Y, i1 %C) {
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%R = select i1 %C, i32 %X, i32 0
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%V = sdiv i32 %Y, %R
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ret i32 %V
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; CHECK-LABEL: @test18(
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; CHECK: %V = sdiv i32 %Y, %X
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; CHECK: ret i32 %V
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}
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define i32 @test19(i32 %x) {
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%tmp = icmp ugt i32 %x, 2147483647
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%retval = select i1 %tmp, i32 -1, i32 0
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ret i32 %retval
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; CHECK-LABEL: @test19(
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; CHECK-NEXT: ashr i32 %x, 31
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; CHECK-NEXT: ret i32
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}
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define i32 @test20(i32 %x) {
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%tmp = icmp slt i32 %x, 0
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%retval = select i1 %tmp, i32 -1, i32 0
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ret i32 %retval
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; CHECK-LABEL: @test20(
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; CHECK-NEXT: ashr i32 %x, 31
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; CHECK-NEXT: ret i32
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}
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define i64 @test21(i32 %x) {
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%tmp = icmp slt i32 %x, 0
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%retval = select i1 %tmp, i64 -1, i64 0
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ret i64 %retval
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; CHECK-LABEL: @test21(
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; CHECK-NEXT: ashr i32 %x, 31
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; CHECK-NEXT: sext i32
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; CHECK-NEXT: ret i64
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}
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define i16 @test22(i32 %x) {
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%tmp = icmp slt i32 %x, 0
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%retval = select i1 %tmp, i16 -1, i16 0
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ret i16 %retval
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; CHECK-LABEL: @test22(
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; CHECK-NEXT: ashr i32 %x, 31
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; CHECK-NEXT: trunc i32
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; CHECK-NEXT: ret i16
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}
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define i1 @test23(i1 %a, i1 %b) {
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%c = select i1 %a, i1 %b, i1 %a
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ret i1 %c
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; CHECK-LABEL: @test23(
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; CHECK-NEXT: %c = and i1 %a, %b
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; CHECK-NEXT: ret i1 %c
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}
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define i1 @test24(i1 %a, i1 %b) {
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%c = select i1 %a, i1 %a, i1 %b
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ret i1 %c
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; CHECK-LABEL: @test24(
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; CHECK-NEXT: %c = or i1 %a, %b
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; CHECK-NEXT: ret i1 %c
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}
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define i32 @test25(i1 %c) {
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entry:
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br i1 %c, label %jump, label %ret
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jump:
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br label %ret
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ret:
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%a = phi i1 [true, %jump], [false, %entry]
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%b = select i1 %a, i32 10, i32 20
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ret i32 %b
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; CHECK-LABEL: @test25(
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; CHECK: %a = phi i32 [ 10, %jump ], [ 20, %entry ]
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; CHECK-NEXT: ret i32 %a
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}
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define i32 @test26(i1 %cond) {
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entry:
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br i1 %cond, label %jump, label %ret
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jump:
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%c = or i1 false, false
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br label %ret
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ret:
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%a = phi i1 [true, %jump], [%c, %entry]
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%b = select i1 %a, i32 10, i32 20
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ret i32 %b
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; CHECK-LABEL: @test26(
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; CHECK: %a = phi i32 [ 10, %jump ], [ 20, %entry ]
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; CHECK-NEXT: ret i32 %a
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}
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define i32 @test27(i1 %c, i32 %A, i32 %B) {
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entry:
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br i1 %c, label %jump, label %ret
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jump:
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br label %ret
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ret:
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%a = phi i1 [true, %jump], [false, %entry]
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%b = select i1 %a, i32 %A, i32 %B
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ret i32 %b
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; CHECK-LABEL: @test27(
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; CHECK: %a = phi i32 [ %A, %jump ], [ %B, %entry ]
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; CHECK-NEXT: ret i32 %a
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}
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|
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define i32 @test28(i1 %cond, i32 %A, i32 %B) {
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entry:
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br i1 %cond, label %jump, label %ret
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jump:
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br label %ret
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ret:
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%c = phi i32 [%A, %jump], [%B, %entry]
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%a = phi i1 [true, %jump], [false, %entry]
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%b = select i1 %a, i32 %A, i32 %c
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ret i32 %b
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; CHECK-LABEL: @test28(
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; CHECK: %a = phi i32 [ %A, %jump ], [ %B, %entry ]
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; CHECK-NEXT: ret i32 %a
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}
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|
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define i32 @test29(i1 %cond, i32 %A, i32 %B) {
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entry:
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br i1 %cond, label %jump, label %ret
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jump:
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br label %ret
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ret:
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%c = phi i32 [%A, %jump], [%B, %entry]
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%a = phi i1 [true, %jump], [false, %entry]
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br label %next
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next:
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%b = select i1 %a, i32 %A, i32 %c
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ret i32 %b
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; CHECK-LABEL: @test29(
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; CHECK: %a = phi i32 [ %A, %jump ], [ %B, %entry ]
|
|
; CHECK: ret i32 %a
|
|
}
|
|
|
|
|
|
; SMAX(SMAX(x, y), x) -> SMAX(x, y)
|
|
define i32 @test30(i32 %x, i32 %y) {
|
|
%cmp = icmp sgt i32 %x, %y
|
|
%cond = select i1 %cmp, i32 %x, i32 %y
|
|
|
|
%cmp5 = icmp sgt i32 %cond, %x
|
|
%retval = select i1 %cmp5, i32 %cond, i32 %x
|
|
ret i32 %retval
|
|
; CHECK-LABEL: @test30(
|
|
; CHECK: ret i32 %cond
|
|
}
|
|
|
|
; UMAX(UMAX(x, y), x) -> UMAX(x, y)
|
|
define i32 @test31(i32 %x, i32 %y) {
|
|
%cmp = icmp ugt i32 %x, %y
|
|
%cond = select i1 %cmp, i32 %x, i32 %y
|
|
%cmp5 = icmp ugt i32 %cond, %x
|
|
%retval = select i1 %cmp5, i32 %cond, i32 %x
|
|
ret i32 %retval
|
|
; CHECK-LABEL: @test31(
|
|
; CHECK: ret i32 %cond
|
|
}
|
|
|
|
; SMIN(SMIN(x, y), x) -> SMIN(x, y)
|
|
define i32 @test32(i32 %x, i32 %y) {
|
|
%cmp = icmp sgt i32 %x, %y
|
|
%cond = select i1 %cmp, i32 %y, i32 %x
|
|
%cmp5 = icmp sgt i32 %cond, %x
|
|
%retval = select i1 %cmp5, i32 %x, i32 %cond
|
|
ret i32 %retval
|
|
; CHECK-LABEL: @test32(
|
|
; CHECK: ret i32 %cond
|
|
}
|
|
|
|
; MAX(MIN(x, y), x) -> x
|
|
define i32 @test33(i32 %x, i32 %y) {
|
|
%cmp = icmp sgt i32 %x, %y
|
|
%cond = select i1 %cmp, i32 %y, i32 %x
|
|
%cmp5 = icmp sgt i32 %cond, %x
|
|
%retval = select i1 %cmp5, i32 %cond, i32 %x
|
|
ret i32 %retval
|
|
; CHECK-LABEL: @test33(
|
|
; CHECK: ret i32 %x
|
|
}
|
|
|
|
; MIN(MAX(x, y), x) -> x
|
|
define i32 @test34(i32 %x, i32 %y) {
|
|
%cmp = icmp sgt i32 %x, %y
|
|
%cond = select i1 %cmp, i32 %x, i32 %y
|
|
%cmp5 = icmp sgt i32 %cond, %x
|
|
%retval = select i1 %cmp5, i32 %x, i32 %cond
|
|
ret i32 %retval
|
|
; CHECK-LABEL: @test34(
|
|
; CHECK: ret i32 %x
|
|
}
|
|
|
|
define i32 @test35(i32 %x) {
|
|
%cmp = icmp sge i32 %x, 0
|
|
%cond = select i1 %cmp, i32 60, i32 100
|
|
ret i32 %cond
|
|
; CHECK-LABEL: @test35(
|
|
; CHECK: ashr i32 %x, 31
|
|
; CHECK: and i32 {{.*}}, 40
|
|
; CHECK: add nuw nsw i32 {{.*}}, 60
|
|
; CHECK: ret
|
|
}
|
|
|
|
define i32 @test36(i32 %x) {
|
|
%cmp = icmp slt i32 %x, 0
|
|
%cond = select i1 %cmp, i32 60, i32 100
|
|
ret i32 %cond
|
|
; CHECK-LABEL: @test36(
|
|
; CHECK: ashr i32 %x, 31
|
|
; CHECK: and i32 {{.*}}, -40
|
|
; CHECK: add nsw i32 {{.*}}, 100
|
|
; CHECK: ret
|
|
}
|
|
|
|
define i32 @test37(i32 %x) {
|
|
%cmp = icmp sgt i32 %x, -1
|
|
%cond = select i1 %cmp, i32 1, i32 -1
|
|
ret i32 %cond
|
|
; CHECK-LABEL: @test37(
|
|
; CHECK: ashr i32 %x, 31
|
|
; CHECK: or i32 {{.*}}, 1
|
|
; CHECK: ret
|
|
}
|
|
|
|
define i1 @test38(i1 %cond) {
|
|
%zero = alloca i32
|
|
%one = alloca i32
|
|
%ptr = select i1 %cond, i32* %zero, i32* %one
|
|
%isnull = icmp eq i32* %ptr, null
|
|
ret i1 %isnull
|
|
; CHECK-LABEL: @test38(
|
|
; CHECK: ret i1 false
|
|
}
|
|
|
|
define i1 @test39(i1 %cond, double %x) {
|
|
%s = select i1 %cond, double %x, double 0x7FF0000000000000 ; RHS = +infty
|
|
%cmp = fcmp ule double %x, %s
|
|
ret i1 %cmp
|
|
; CHECK-LABEL: @test39(
|
|
; CHECK: ret i1 true
|
|
}
|
|
|
|
define i1 @test40(i1 %cond) {
|
|
%a = alloca i32
|
|
%b = alloca i32
|
|
%c = alloca i32
|
|
%s = select i1 %cond, i32* %a, i32* %b
|
|
%r = icmp eq i32* %s, %c
|
|
ret i1 %r
|
|
; CHECK-LABEL: @test40(
|
|
; CHECK: ret i1 false
|
|
}
|
|
|
|
define i32 @test41(i1 %cond, i32 %x, i32 %y) {
|
|
%z = and i32 %x, %y
|
|
%s = select i1 %cond, i32 %y, i32 %z
|
|
%r = and i32 %x, %s
|
|
ret i32 %r
|
|
; CHECK-LABEL: @test41(
|
|
; CHECK-NEXT: and i32 %x, %y
|
|
; CHECK-NEXT: ret i32
|
|
}
|
|
|
|
define i32 @test42(i32 %x, i32 %y) {
|
|
%b = add i32 %y, -1
|
|
%cond = icmp eq i32 %x, 0
|
|
%c = select i1 %cond, i32 %b, i32 %y
|
|
ret i32 %c
|
|
; CHECK-LABEL: @test42(
|
|
; CHECK-NEXT: %cond = icmp eq i32 %x, 0
|
|
; CHECK-NEXT: %b = sext i1 %cond to i32
|
|
; CHECK-NEXT: %c = add i32 %b, %y
|
|
; CHECK-NEXT: ret i32 %c
|
|
}
|
|
|
|
define i64 @test43(i32 %a) nounwind {
|
|
%a_ext = sext i32 %a to i64
|
|
%is_a_nonnegative = icmp sgt i32 %a, -1
|
|
%max = select i1 %is_a_nonnegative, i64 %a_ext, i64 0
|
|
ret i64 %max
|
|
; CHECK-LABEL: @test43(
|
|
; CHECK-NEXT: %a_ext = sext i32 %a to i64
|
|
; CHECK-NEXT: %is_a_nonnegative = icmp slt i64 %a_ext, 0
|
|
; CHECK-NEXT: %max = select i1 %is_a_nonnegative, i64 0, i64 %a_ext
|
|
; CHECK-NEXT: ret i64 %max
|
|
}
|
|
|
|
define i64 @test44(i32 %a) nounwind {
|
|
%a_ext = sext i32 %a to i64
|
|
%is_a_nonpositive = icmp slt i32 %a, 1
|
|
%min = select i1 %is_a_nonpositive, i64 %a_ext, i64 0
|
|
ret i64 %min
|
|
; CHECK-LABEL: @test44(
|
|
; CHECK-NEXT: %a_ext = sext i32 %a to i64
|
|
; CHECK-NEXT: %is_a_nonpositive = icmp sgt i64 %a_ext, 0
|
|
; CHECK-NEXT: %min = select i1 %is_a_nonpositive, i64 0, i64 %a_ext
|
|
; CHECK-NEXT: ret i64 %min
|
|
}
|
|
define i64 @test45(i32 %a) nounwind {
|
|
%a_ext = zext i32 %a to i64
|
|
%is_a_nonnegative = icmp ugt i32 %a, 2
|
|
%max = select i1 %is_a_nonnegative, i64 %a_ext, i64 3
|
|
ret i64 %max
|
|
; CHECK-LABEL: @test45(
|
|
; CHECK-NEXT: %a_ext = zext i32 %a to i64
|
|
; CHECK-NEXT: %is_a_nonnegative = icmp ult i64 %a_ext, 3
|
|
; CHECK-NEXT: %max = select i1 %is_a_nonnegative, i64 3, i64 %a_ext
|
|
; CHECK-NEXT: ret i64 %max
|
|
}
|
|
|
|
define i64 @test46(i32 %a) nounwind {
|
|
%a_ext = zext i32 %a to i64
|
|
%is_a_nonpositive = icmp ult i32 %a, 3
|
|
%min = select i1 %is_a_nonpositive, i64 %a_ext, i64 2
|
|
ret i64 %min
|
|
; CHECK-LABEL: @test46(
|
|
; CHECK-NEXT: %a_ext = zext i32 %a to i64
|
|
; CHECK-NEXT: %is_a_nonpositive = icmp ugt i64 %a_ext, 2
|
|
; CHECK-NEXT: %min = select i1 %is_a_nonpositive, i64 2, i64 %a_ext
|
|
; CHECK-NEXT: ret i64 %min
|
|
}
|
|
define i64 @test47(i32 %a) nounwind {
|
|
%a_ext = sext i32 %a to i64
|
|
%is_a_nonnegative = icmp ugt i32 %a, 2
|
|
%max = select i1 %is_a_nonnegative, i64 %a_ext, i64 3
|
|
ret i64 %max
|
|
; CHECK-LABEL: @test47(
|
|
; CHECK-NEXT: %a_ext = sext i32 %a to i64
|
|
; CHECK-NEXT: %is_a_nonnegative = icmp ult i64 %a_ext, 3
|
|
; CHECK-NEXT: %max = select i1 %is_a_nonnegative, i64 3, i64 %a_ext
|
|
; CHECK-NEXT: ret i64 %max
|
|
}
|
|
|
|
define i64 @test48(i32 %a) nounwind {
|
|
%a_ext = sext i32 %a to i64
|
|
%is_a_nonpositive = icmp ult i32 %a, 3
|
|
%min = select i1 %is_a_nonpositive, i64 %a_ext, i64 2
|
|
ret i64 %min
|
|
; CHECK-LABEL: @test48(
|
|
; CHECK-NEXT: %a_ext = sext i32 %a to i64
|
|
; CHECK-NEXT: %is_a_nonpositive = icmp ugt i64 %a_ext, 2
|
|
; CHECK-NEXT: %min = select i1 %is_a_nonpositive, i64 2, i64 %a_ext
|
|
; CHECK-NEXT: ret i64 %min
|
|
}
|
|
|
|
define i64 @test49(i32 %a) nounwind {
|
|
%a_ext = sext i32 %a to i64
|
|
%is_a_nonpositive = icmp ult i32 %a, 3
|
|
%min = select i1 %is_a_nonpositive, i64 2, i64 %a_ext
|
|
ret i64 %min
|
|
; CHECK-LABEL: @test49(
|
|
; CHECK-NEXT: %a_ext = sext i32 %a to i64
|
|
; CHECK-NEXT: %is_a_nonpositive = icmp ugt i64 %a_ext, 2
|
|
; CHECK-NEXT: %min = select i1 %is_a_nonpositive, i64 %a_ext, i64 2
|
|
; CHECK-NEXT: ret i64 %min
|
|
}
|
|
define i64 @test50(i32 %a) nounwind {
|
|
%is_a_nonpositive = icmp ult i32 %a, 3
|
|
%a_ext = sext i32 %a to i64
|
|
%min = select i1 %is_a_nonpositive, i64 2, i64 %a_ext
|
|
ret i64 %min
|
|
; CHECK-LABEL: @test50(
|
|
; CHECK-NEXT: %a_ext = sext i32 %a to i64
|
|
; CHECK-NEXT: %is_a_nonpositive = icmp ugt i64 %a_ext, 2
|
|
; CHECK-NEXT: %min = select i1 %is_a_nonpositive, i64 %a_ext, i64 2
|
|
; CHECK-NEXT: ret i64 %min
|
|
}
|
|
|
|
; PR8994
|
|
|
|
; This select instruction can't be eliminated because trying to do so would
|
|
; change the number of vector elements. This used to assert.
|
|
define i48 @test51(<3 x i1> %icmp, <3 x i16> %tmp) {
|
|
; CHECK-LABEL: @test51(
|
|
%select = select <3 x i1> %icmp, <3 x i16> zeroinitializer, <3 x i16> %tmp
|
|
; CHECK: select <3 x i1>
|
|
%tmp2 = bitcast <3 x i16> %select to i48
|
|
ret i48 %tmp2
|
|
}
|
|
|
|
; PR8575
|
|
|
|
define i32 @test52(i32 %n, i32 %m) nounwind {
|
|
; CHECK-LABEL: @test52(
|
|
%cmp = icmp sgt i32 %n, %m
|
|
%. = select i1 %cmp, i32 1, i32 3
|
|
%add = add nsw i32 %., 3
|
|
%storemerge = select i1 %cmp, i32 %., i32 %add
|
|
; CHECK: select i1 %cmp, i32 1, i32 6
|
|
ret i32 %storemerge
|
|
}
|
|
|
|
; PR9454
|
|
define i32 @test53(i32 %x) nounwind {
|
|
%and = and i32 %x, 2
|
|
%cmp = icmp eq i32 %and, %x
|
|
%sel = select i1 %cmp, i32 2, i32 1
|
|
ret i32 %sel
|
|
; CHECK-LABEL: @test53(
|
|
; CHECK: select i1 %cmp
|
|
; CHECK: ret
|
|
}
|
|
|
|
define i32 @test54(i32 %X, i32 %Y) {
|
|
%A = ashr exact i32 %X, %Y
|
|
%B = icmp eq i32 %A, 0
|
|
%C = select i1 %B, i32 %A, i32 1
|
|
ret i32 %C
|
|
; CHECK-LABEL: @test54(
|
|
; CHECK-NOT: ashr
|
|
; CHECK-NOT: select
|
|
; CHECK: icmp ne i32 %X, 0
|
|
; CHECK: zext
|
|
; CHECK: ret
|
|
}
|
|
|
|
define i1 @test55(i1 %X, i32 %Y, i32 %Z) {
|
|
%A = ashr exact i32 %Y, %Z
|
|
%B = select i1 %X, i32 %Y, i32 %A
|
|
%C = icmp eq i32 %B, 0
|
|
ret i1 %C
|
|
; CHECK-LABEL: @test55(
|
|
; CHECK-NOT: ashr
|
|
; CHECK-NOT: select
|
|
; CHECK: icmp eq
|
|
; CHECK: ret i1
|
|
}
|
|
|
|
define i32 @test56(i16 %x) nounwind {
|
|
%tobool = icmp eq i16 %x, 0
|
|
%conv = zext i16 %x to i32
|
|
%cond = select i1 %tobool, i32 0, i32 %conv
|
|
ret i32 %cond
|
|
; CHECK-LABEL: @test56(
|
|
; CHECK-NEXT: zext
|
|
; CHECK-NEXT: ret
|
|
}
|
|
|
|
define i32 @test57(i32 %x, i32 %y) nounwind {
|
|
%and = and i32 %x, %y
|
|
%tobool = icmp eq i32 %x, 0
|
|
%.and = select i1 %tobool, i32 0, i32 %and
|
|
ret i32 %.and
|
|
; CHECK-LABEL: @test57(
|
|
; CHECK-NEXT: and i32 %x, %y
|
|
; CHECK-NEXT: ret
|
|
}
|
|
|
|
define i32 @test58(i16 %x) nounwind {
|
|
%tobool = icmp ne i16 %x, 1
|
|
%conv = zext i16 %x to i32
|
|
%cond = select i1 %tobool, i32 %conv, i32 1
|
|
ret i32 %cond
|
|
; CHECK-LABEL: @test58(
|
|
; CHECK-NEXT: zext
|
|
; CHECK-NEXT: ret
|
|
}
|
|
|
|
define i32 @test59(i32 %x, i32 %y) nounwind {
|
|
%and = and i32 %x, %y
|
|
%tobool = icmp ne i32 %x, %y
|
|
%.and = select i1 %tobool, i32 %and, i32 %y
|
|
ret i32 %.and
|
|
; CHECK-LABEL: @test59(
|
|
; CHECK-NEXT: and i32 %x, %y
|
|
; CHECK-NEXT: ret
|
|
}
|
|
|
|
define i1 @test60(i32 %x, i1* %y) nounwind {
|
|
%cmp = icmp eq i32 %x, 0
|
|
%load = load i1* %y, align 1
|
|
%cmp1 = icmp slt i32 %x, 1
|
|
%sel = select i1 %cmp, i1 %load, i1 %cmp1
|
|
ret i1 %sel
|
|
; CHECK-LABEL: @test60(
|
|
; CHECK: select
|
|
}
|
|
|
|
@glbl = constant i32 10
|
|
define i32 @test61(i32* %ptr) {
|
|
%A = load i32* %ptr
|
|
%B = icmp eq i32* %ptr, @glbl
|
|
%C = select i1 %B, i32 %A, i32 10
|
|
ret i32 %C
|
|
; CHECK-LABEL: @test61(
|
|
; CHECK: ret i32 10
|
|
}
|
|
|
|
define i1 @test62(i1 %A, i1 %B) {
|
|
%not = xor i1 %A, true
|
|
%C = select i1 %A, i1 %not, i1 %B
|
|
ret i1 %C
|
|
; CHECK-LABEL: @test62(
|
|
; CHECK: %not = xor i1 %A, true
|
|
; CHECK: %C = and i1 %not, %B
|
|
; CHECK: ret i1 %C
|
|
}
|
|
|
|
define i1 @test63(i1 %A, i1 %B) {
|
|
%not = xor i1 %A, true
|
|
%C = select i1 %A, i1 %B, i1 %not
|
|
ret i1 %C
|
|
; CHECK-LABEL: @test63(
|
|
; CHECK: %not = xor i1 %A, true
|
|
; CHECK: %C = or i1 %B, %not
|
|
; CHECK: ret i1 %C
|
|
}
|
|
|
|
; PR14131
|
|
define void @test64(i32 %p, i16 %b) noreturn nounwind {
|
|
entry:
|
|
%p.addr.0.insert.mask = and i32 %p, -65536
|
|
%conv2 = and i32 %p, 65535
|
|
br i1 undef, label %lor.rhs, label %lor.end
|
|
|
|
lor.rhs:
|
|
%p.addr.0.extract.trunc = trunc i32 %p.addr.0.insert.mask to i16
|
|
%phitmp = zext i16 %p.addr.0.extract.trunc to i32
|
|
br label %lor.end
|
|
|
|
lor.end:
|
|
%t.1 = phi i32 [ 0, %entry ], [ %phitmp, %lor.rhs ]
|
|
%conv6 = zext i16 %b to i32
|
|
%div = udiv i32 %conv6, %t.1
|
|
%tobool8 = icmp eq i32 %div, 0
|
|
%cmp = icmp eq i32 %t.1, 0
|
|
%cmp12 = icmp ult i32 %conv2, 2
|
|
%cmp.sink = select i1 %tobool8, i1 %cmp12, i1 %cmp
|
|
br i1 %cmp.sink, label %cond.end17, label %cond.false16
|
|
|
|
cond.false16:
|
|
br label %cond.end17
|
|
|
|
cond.end17:
|
|
br label %while.body
|
|
|
|
while.body:
|
|
br label %while.body
|
|
; CHECK-LABEL: @test64(
|
|
; CHECK-NOT: select
|
|
}
|
|
|
|
; CHECK-LABEL: @select_icmp_eq_and_1_0_or_2(
|
|
; CHECK-NEXT: [[SHL:%[a-z0-9]+]] = shl i32 %x, 1
|
|
; CHECK-NEXT: [[AND:%[a-z0-9]+]] = and i32 [[SHL]], 2
|
|
; CHECK-NEXT: [[OR:%[a-z0-9]+]] = or i32 [[AND]], %y
|
|
; CHECK-NEXT: ret i32 [[OR]]
|
|
define i32 @select_icmp_eq_and_1_0_or_2(i32 %x, i32 %y) {
|
|
%and = and i32 %x, 1
|
|
%cmp = icmp eq i32 %and, 0
|
|
%or = or i32 %y, 2
|
|
%select = select i1 %cmp, i32 %y, i32 %or
|
|
ret i32 %select
|
|
}
|
|
|
|
; CHECK-LABEL: @select_icmp_eq_and_32_0_or_8(
|
|
; CHECK-NEXT: [[LSHR:%[a-z0-9]+]] = lshr i32 %x, 2
|
|
; CHECK-NEXT: [[AND:%[a-z0-9]+]] = and i32 [[LSHR]], 8
|
|
; CHECK-NEXT: [[OR:%[a-z0-9]+]] = or i32 [[AND]], %y
|
|
; CHECK-NEXT: ret i32 [[OR]]
|
|
define i32 @select_icmp_eq_and_32_0_or_8(i32 %x, i32 %y) {
|
|
%and = and i32 %x, 32
|
|
%cmp = icmp eq i32 %and, 0
|
|
%or = or i32 %y, 8
|
|
%select = select i1 %cmp, i32 %y, i32 %or
|
|
ret i32 %select
|
|
}
|
|
|
|
; CHECK-LABEL: @select_icmp_ne_0_and_4096_or_4096(
|
|
; CHECK-NEXT: [[AND:%[a-z0-9]+]] = and i32 %x, 4096
|
|
; CHECK-NEXT: [[XOR:%[a-z0-9]+]] = xor i32 [[AND]], 4096
|
|
; CHECK-NEXT: [[OR:%[a-z0-9]+]] = or i32 [[XOR]], %y
|
|
; CHECK-NEXT: ret i32 [[OR]]
|
|
define i32 @select_icmp_ne_0_and_4096_or_4096(i32 %x, i32 %y) {
|
|
%and = and i32 %x, 4096
|
|
%cmp = icmp ne i32 0, %and
|
|
%or = or i32 %y, 4096
|
|
%select = select i1 %cmp, i32 %y, i32 %or
|
|
ret i32 %select
|
|
}
|
|
|
|
; CHECK-LABEL: @select_icmp_eq_and_4096_0_or_4096(
|
|
; CHECK-NEXT: [[AND:%[a-z0-9]+]] = and i32 %x, 4096
|
|
; CHECK-NEXT: [[OR:%[a-z0-9]+]] = or i32 [[AND]], %y
|
|
; CHECK-NEXT: ret i32 [[OR]]
|
|
define i32 @select_icmp_eq_and_4096_0_or_4096(i32 %x, i32 %y) {
|
|
%and = and i32 %x, 4096
|
|
%cmp = icmp eq i32 %and, 0
|
|
%or = or i32 %y, 4096
|
|
%select = select i1 %cmp, i32 %y, i32 %or
|
|
ret i32 %select
|
|
}
|
|
|
|
; CHECK-LABEL: @select_icmp_eq_0_and_1_or_1(
|
|
; CHECK-NEXT: [[TRUNC:%.+]] = trunc i64 %x to i32
|
|
; CHECK-NEXT: [[AND:%.+]] = and i32 [[TRUNC]], 1
|
|
; CHECK-NEXT: [[OR:%.+]] = or i32 [[XOR]], %y
|
|
; CHECK-NEXT: ret i32 [[OR]]
|
|
define i32 @select_icmp_eq_0_and_1_or_1(i64 %x, i32 %y) {
|
|
%and = and i64 %x, 1
|
|
%cmp = icmp eq i64 %and, 0
|
|
%or = or i32 %y, 1
|
|
%select = select i1 %cmp, i32 %y, i32 %or
|
|
ret i32 %select
|
|
}
|
|
|
|
; CHECK-LABEL: @select_icmp_ne_0_and_4096_or_32(
|
|
; CHECK-NEXT: [[LSHR:%[a-z0-9]+]] = lshr i32 %x, 7
|
|
; CHECK-NEXT: [[AND:%[a-z0-9]+]] = and i32 [[LSHR]], 32
|
|
; CHECK-NEXT: [[XOR:%[a-z0-9]+]] = xor i32 [[AND]], 32
|
|
; CHECK-NEXT: [[OR:%[a-z0-9]+]] = or i32 [[XOR]], %y
|
|
; CHECK-NEXT: ret i32 [[OR]]
|
|
define i32 @select_icmp_ne_0_and_4096_or_32(i32 %x, i32 %y) {
|
|
%and = and i32 %x, 4096
|
|
%cmp = icmp ne i32 0, %and
|
|
%or = or i32 %y, 32
|
|
%select = select i1 %cmp, i32 %y, i32 %or
|
|
ret i32 %select
|
|
}
|
|
|
|
; CHECK-LABEL: @select_icmp_ne_0_and_32_or_4096(
|
|
; CHECK-NEXT: [[SHL:%[a-z0-9]+]] = shl i32 %x, 7
|
|
; CHECK-NEXT: [[AND:%[a-z0-9]+]] = and i32 [[SHL]], 4096
|
|
; CHECK-NEXT: [[XOR:%[a-z0-9]+]] = xor i32 [[AND]], 4096
|
|
; CHECK-NEXT: [[OR:%[a-z0-9]+]] = or i32 [[XOR]], %y
|
|
; CHECK-NEXT: ret i32 [[OR]]
|
|
define i32 @select_icmp_ne_0_and_32_or_4096(i32 %x, i32 %y) {
|
|
%and = and i32 %x, 32
|
|
%cmp = icmp ne i32 0, %and
|
|
%or = or i32 %y, 4096
|
|
%select = select i1 %cmp, i32 %y, i32 %or
|
|
ret i32 %select
|
|
}
|
|
|
|
; CHECK-LABEL: @select_icmp_ne_0_and_1073741824_or_8(
|
|
; CHECK-NEXT: [[LSHR:%.+]] = lshr i32 %x, 27
|
|
; CHECK-NEXT: [[TRUNC:%.+]] = trunc i32 [[LSHR]] to i8
|
|
; CHECK-NEXT: [[AND:%.+]] = and i8 [[TRUNC]], 8
|
|
; CHECK-NEXT: [[XOR:%.+]] = xor i8 [[AND]], 8
|
|
; CHECK-NEXT: [[OR:%.+]] = or i8 [[XOR]], %y
|
|
; CHECK-NEXT: ret i8 [[OR]]
|
|
define i8 @select_icmp_ne_0_and_1073741824_or_8(i32 %x, i8 %y) {
|
|
%and = and i32 %x, 1073741824
|
|
%cmp = icmp ne i32 0, %and
|
|
%or = or i8 %y, 8
|
|
%select = select i1 %cmp, i8 %y, i8 %or
|
|
ret i8 %select
|
|
}
|
|
|
|
; CHECK-LABEL: @select_icmp_ne_0_and_8_or_1073741824(
|
|
; CHECK-NEXT: [[AND:%[a-z0-9]+]] = and i8 %x, 8
|
|
; CHECK-NEXT: [[ZEXT:%[a-z0-9]+]] = zext i8 [[AND]] to i32
|
|
; CHECK-NEXT: [[SHL:%[a-z0-9]+]] = shl nuw nsw i32 [[ZEXT]], 27
|
|
; CHECK-NEXT: [[XOR:%[a-z0-9]+]] = xor i32 [[SHL]], 1073741824
|
|
; CHECK-NEXT: [[OR:%[a-z0-9]+]] = or i32 [[XOR]], %y
|
|
; CHECK-NEXT: ret i32 [[OR]]
|
|
define i32 @select_icmp_ne_0_and_8_or_1073741824(i8 %x, i32 %y) {
|
|
%and = and i8 %x, 8
|
|
%cmp = icmp ne i8 0, %and
|
|
%or = or i32 %y, 1073741824
|
|
%select = select i1 %cmp, i32 %y, i32 %or
|
|
ret i32 %select
|
|
}
|
|
|
|
; We can't combine here, because the cmp is scalar and the or vector.
|
|
; Just make sure we don't assert.
|
|
define <2 x i32> @select_icmp_eq_and_1_0_or_vector_of_2s(i32 %x, <2 x i32> %y) {
|
|
%and = and i32 %x, 1
|
|
%cmp = icmp eq i32 %and, 0
|
|
%or = or <2 x i32> %y, <i32 2, i32 2>
|
|
%select = select i1 %cmp, <2 x i32> %y, <2 x i32> %or
|
|
ret <2 x i32> %select
|
|
}
|
|
|
|
; CHECK-LABEL: @select_icmp_and_8_eq_0_or_8(
|
|
; CHECK-NEXT: [[OR:%[a-z0-9]+]] = or i32 %x, 8
|
|
; CHECK-NEXT: ret i32 [[OR]]
|
|
define i32 @select_icmp_and_8_eq_0_or_8(i32 %x) {
|
|
%and = and i32 %x, 8
|
|
%cmp = icmp eq i32 %and, 0
|
|
%or = or i32 %x, 8
|
|
%or.x = select i1 %cmp, i32 %or, i32 %x
|
|
ret i32 %or.x
|
|
}
|
|
|
|
; CHECK-LABEL: @select_icmp_and_8_ne_0_xor_8(
|
|
; CHECK-NEXT: [[AND:%[a-z0-9]+]] = and i32 %x, -9
|
|
; CHECK-NEXT: ret i32 [[AND]]
|
|
define i32 @select_icmp_and_8_ne_0_xor_8(i32 %x) {
|
|
%and = and i32 %x, 8
|
|
%cmp = icmp eq i32 %and, 0
|
|
%xor = xor i32 %x, 8
|
|
%x.xor = select i1 %cmp, i32 %x, i32 %xor
|
|
ret i32 %x.xor
|
|
}
|
|
|
|
; CHECK-LABEL: @select_icmp_and_8_eq_0_xor_8(
|
|
; CHECK-NEXT: [[OR:%[a-z0-9]+]] = or i32 %x, 8
|
|
; CHECK-NEXT: ret i32 [[OR]]
|
|
define i32 @select_icmp_and_8_eq_0_xor_8(i32 %x) {
|
|
%and = and i32 %x, 8
|
|
%cmp = icmp eq i32 %and, 0
|
|
%xor = xor i32 %x, 8
|
|
%xor.x = select i1 %cmp, i32 %xor, i32 %x
|
|
ret i32 %xor.x
|
|
}
|
|
|
|
; CHECK-LABEL: @select_icmp_and_8_ne_0_and_not_8(
|
|
; CHECK-NEXT: [[AND:%[a-z0-9]+]] = and i32 %x, -9
|
|
; CHECK-NEXT: ret i32 [[AND]]
|
|
define i32 @select_icmp_and_8_ne_0_and_not_8(i32 %x) {
|
|
%and = and i32 %x, 8
|
|
%cmp = icmp eq i32 %and, 0
|
|
%and1 = and i32 %x, -9
|
|
%x.and1 = select i1 %cmp, i32 %x, i32 %and1
|
|
ret i32 %x.and1
|
|
}
|
|
|
|
; CHECK-LABEL: @select_icmp_and_8_eq_0_and_not_8(
|
|
; CHECK-NEXT: ret i32 %x
|
|
define i32 @select_icmp_and_8_eq_0_and_not_8(i32 %x) {
|
|
%and = and i32 %x, 8
|
|
%cmp = icmp eq i32 %and, 0
|
|
%and1 = and i32 %x, -9
|
|
%and1.x = select i1 %cmp, i32 %and1, i32 %x
|
|
ret i32 %and1.x
|
|
}
|
|
|
|
; CHECK-LABEL: @select_icmp_x_and_8_eq_0_y_xor_8(
|
|
; CHECK: select i1 %cmp, i64 %y, i64 %xor
|
|
define i64 @select_icmp_x_and_8_eq_0_y_xor_8(i32 %x, i64 %y) {
|
|
%and = and i32 %x, 8
|
|
%cmp = icmp eq i32 %and, 0
|
|
%xor = xor i64 %y, 8
|
|
%y.xor = select i1 %cmp, i64 %y, i64 %xor
|
|
ret i64 %y.xor
|
|
}
|
|
|
|
; CHECK-LABEL: @select_icmp_x_and_8_eq_0_y_and_not_8(
|
|
; CHECK: select i1 %cmp, i64 %y, i64 %and1
|
|
define i64 @select_icmp_x_and_8_eq_0_y_and_not_8(i32 %x, i64 %y) {
|
|
%and = and i32 %x, 8
|
|
%cmp = icmp eq i32 %and, 0
|
|
%and1 = and i64 %y, -9
|
|
%y.and1 = select i1 %cmp, i64 %y, i64 %and1
|
|
ret i64 %y.and1
|
|
}
|
|
|
|
; CHECK-LABEL: @select_icmp_x_and_8_ne_0_y_xor_8(
|
|
; CHECK: select i1 %cmp, i64 %xor, i64 %y
|
|
define i64 @select_icmp_x_and_8_ne_0_y_xor_8(i32 %x, i64 %y) {
|
|
%and = and i32 %x, 8
|
|
%cmp = icmp eq i32 %and, 0
|
|
%xor = xor i64 %y, 8
|
|
%xor.y = select i1 %cmp, i64 %xor, i64 %y
|
|
ret i64 %xor.y
|
|
}
|
|
|
|
; CHECK-LABEL: @select_icmp_x_and_8_ne_0_y_and_not_8(
|
|
; CHECK: select i1 %cmp, i64 %and1, i64 %y
|
|
define i64 @select_icmp_x_and_8_ne_0_y_and_not_8(i32 %x, i64 %y) {
|
|
%and = and i32 %x, 8
|
|
%cmp = icmp eq i32 %and, 0
|
|
%and1 = and i64 %y, -9
|
|
%and1.y = select i1 %cmp, i64 %and1, i64 %y
|
|
ret i64 %and1.y
|
|
}
|
|
|
|
; CHECK-LABEL: @select_icmp_x_and_8_ne_0_y_or_8(
|
|
; CHECK: xor i64 %1, 8
|
|
; CHECK: or i64 %2, %y
|
|
define i64 @select_icmp_x_and_8_ne_0_y_or_8(i32 %x, i64 %y) {
|
|
%and = and i32 %x, 8
|
|
%cmp = icmp eq i32 %and, 0
|
|
%or = or i64 %y, 8
|
|
%or.y = select i1 %cmp, i64 %or, i64 %y
|
|
ret i64 %or.y
|
|
}
|
|
|
|
define i32 @test65(i64 %x) {
|
|
%1 = and i64 %x, 16
|
|
%2 = icmp ne i64 %1, 0
|
|
%3 = select i1 %2, i32 40, i32 42
|
|
ret i32 %3
|
|
|
|
; CHECK-LABEL: @test65(
|
|
; CHECK: %[[TRUNC:.*]] = trunc i64 %x to i32
|
|
; CHECK: %[[LSHR:.*]] = lshr i32 %[[TRUNC]], 3
|
|
; CHECK: %[[AND:.*]] = and i32 %[[LSHR]], 2
|
|
; CHECK: %[[XOR:.*]] = xor i32 %[[AND]], 42
|
|
; CHECK: ret i32 %[[XOR]]
|
|
}
|
|
|
|
define i32 @test66(i64 %x) {
|
|
%1 = and i64 %x, 4294967296
|
|
%2 = icmp ne i64 %1, 0
|
|
%3 = select i1 %2, i32 40, i32 42
|
|
ret i32 %3
|
|
|
|
; CHECK-LABEL: @test66(
|
|
; CHECK: select
|
|
}
|
|
|
|
define i32 @test67(i16 %x) {
|
|
%1 = and i16 %x, 4
|
|
%2 = icmp ne i16 %1, 0
|
|
%3 = select i1 %2, i32 40, i32 42
|
|
ret i32 %3
|
|
|
|
; CHECK-LABEL: @test67(
|
|
; CHECK: and i16 %x, 4
|
|
; CHECK: zext i16 %1 to i32
|
|
; CHECK: lshr exact i32 %2, 1
|
|
; CHECK: xor i32 %3, 42
|
|
}
|
|
|
|
; SMIN(SMIN(X, 11), 92) -> SMIN(X, 11)
|
|
define i32 @test68(i32 %x) {
|
|
entry:
|
|
%cmp = icmp slt i32 11, %x
|
|
%cond = select i1 %cmp, i32 11, i32 %x
|
|
%cmp3 = icmp slt i32 92, %cond
|
|
%retval = select i1 %cmp3, i32 92, i32 %cond
|
|
ret i32 %retval
|
|
; CHECK-LABEL: @test68(
|
|
; CHECK: ret i32 %cond
|
|
}
|
|
|
|
; MIN(MIN(X, 24), 83) -> MIN(X, 24)
|
|
define i32 @test69(i32 %x) {
|
|
entry:
|
|
%cmp = icmp ult i32 24, %x
|
|
%cond = select i1 %cmp, i32 24, i32 %x
|
|
%cmp3 = icmp ult i32 83, %cond
|
|
%retval = select i1 %cmp3, i32 83, i32 %cond
|
|
ret i32 %retval
|
|
; CHECK-LABEL: @test69(
|
|
; CHECK: ret i32 %cond
|
|
}
|
|
|
|
; SMAX(SMAX(X, 75), 36) -> SMAX(X, 75)
|
|
define i32 @test70(i32 %x) {
|
|
entry:
|
|
%cmp = icmp slt i32 %x, 75
|
|
%cond = select i1 %cmp, i32 75, i32 %x
|
|
%cmp3 = icmp slt i32 %cond, 36
|
|
%retval = select i1 %cmp3, i32 36, i32 %cond
|
|
ret i32 %retval
|
|
; CHECK-LABEL: @test70(
|
|
; CHECK: ret i32 %cond
|
|
}
|
|
|
|
; MAX(MAX(X, 68), 47) -> MAX(X, 68)
|
|
define i32 @test71(i32 %x) {
|
|
entry:
|
|
%cmp = icmp ult i32 %x, 68
|
|
%cond = select i1 %cmp, i32 68, i32 %x
|
|
%cmp3 = icmp ult i32 %cond, 47
|
|
%retval = select i1 %cmp3, i32 47, i32 %cond
|
|
ret i32 %retval
|
|
; CHECK-LABEL: @test71(
|
|
; CHECK: ret i32 %cond
|
|
}
|
|
|
|
; SMIN(SMIN(X, 92), 11) -> SMIN(X, 11)
|
|
define i32 @test72(i32 %x) {
|
|
%cmp = icmp sgt i32 %x, 92
|
|
%cond = select i1 %cmp, i32 92, i32 %x
|
|
%cmp3 = icmp sgt i32 %cond, 11
|
|
%retval = select i1 %cmp3, i32 11, i32 %cond
|
|
ret i32 %retval
|
|
; CHECK-LABEL: @test72(
|
|
; CHECK-NEXT: [[CMP:%[a-z0-9]+]] = icmp sgt i32 %x, 11
|
|
; CHECK-NEXT: [[SEL:%[a-z0-9]+]] = select i1 [[CMP]], i32 11, i32 %x
|
|
; CHECK-NEXT: ret i32 [[SEL]]
|
|
}
|
|
|
|
; MIN(MIN(X, 83), 24) -> MIN(X, 24)
|
|
define i32 @test73(i32 %x) {
|
|
%cmp = icmp ugt i32 %x, 83
|
|
%cond = select i1 %cmp, i32 83, i32 %x
|
|
%cmp3 = icmp ugt i32 %cond, 24
|
|
%retval = select i1 %cmp3, i32 24, i32 %cond
|
|
ret i32 %retval
|
|
; CHECK-LABEL: @test73(
|
|
; CHECK-NEXT: [[CMP:%[a-z0-9]+]] = icmp ugt i32 %x, 24
|
|
; CHECK-NEXT: [[SEL:%[a-z0-9]+]] = select i1 [[CMP]], i32 24, i32 %x
|
|
; CHECK-NEXT: ret i32 [[SEL]]
|
|
}
|
|
|
|
; SMAX(SMAX(X, 36), 75) -> SMAX(X, 75)
|
|
define i32 @test74(i32 %x) {
|
|
%cmp = icmp slt i32 %x, 36
|
|
%cond = select i1 %cmp, i32 36, i32 %x
|
|
%cmp3 = icmp slt i32 %cond, 75
|
|
%retval = select i1 %cmp3, i32 75, i32 %cond
|
|
ret i32 %retval
|
|
; CHECK-LABEL: @test74(
|
|
; CHECK-NEXT: [[CMP:%[a-z0-9]+]] = icmp slt i32 %x, 75
|
|
; CHECK-NEXT: [[SEL:%[a-z0-9]+]] = select i1 [[CMP]], i32 75, i32 %x
|
|
; CHECK-NEXT: ret i32 [[SEL]]
|
|
}
|
|
|
|
; MAX(MAX(X, 47), 68) -> MAX(X, 68)
|
|
define i32 @test75(i32 %x) {
|
|
%cmp = icmp ult i32 %x, 47
|
|
%cond = select i1 %cmp, i32 47, i32 %x
|
|
%cmp3 = icmp ult i32 %cond, 68
|
|
%retval = select i1 %cmp3, i32 68, i32 %cond
|
|
ret i32 %retval
|
|
; CHECK-LABEL: @test75(
|
|
; CHECK-NEXT: [[CMP:%[a-z0-9]+]] = icmp ult i32 %x, 68
|
|
; CHECK-NEXT: [[SEL:%[a-z0-9]+]] = select i1 [[CMP]], i32 68, i32 %x
|
|
; CHECK-NEXT: ret i32 [[SEL]]
|
|
}
|
|
|
|
@under_aligned = external global i32, align 1
|
|
|
|
define i32 @test76(i1 %flag, i32* %x) {
|
|
; The load here must not be speculated around the select. One side of the
|
|
; select is trivially dereferencable but may have a lower alignment than the
|
|
; load does.
|
|
; CHECK-LABEL: @test76(
|
|
; CHECK: store i32 0, i32* %x
|
|
; CHECK: %[[P:.*]] = select i1 %flag, i32* @under_aligned, i32* %x
|
|
; CHECK: load i32* %[[P]]
|
|
|
|
store i32 0, i32* %x
|
|
%p = select i1 %flag, i32* @under_aligned, i32* %x
|
|
%v = load i32* %p
|
|
ret i32 %v
|
|
}
|
|
|
|
declare void @scribble_on_i32(i32*)
|
|
|
|
define i32 @test77(i1 %flag, i32* %x) {
|
|
; The load here must not be speculated around the select. One side of the
|
|
; select is trivially dereferencable but may have a lower alignment than the
|
|
; load does.
|
|
; CHECK-LABEL: @test77(
|
|
; CHECK: %[[A:.*]] = alloca i32, align 1
|
|
; CHECK: call void @scribble_on_i32(i32* %[[A]])
|
|
; CHECK: store i32 0, i32* %x
|
|
; CHECK: %[[P:.*]] = select i1 %flag, i32* %[[A]], i32* %x
|
|
; CHECK: load i32* %[[P]]
|
|
|
|
%under_aligned = alloca i32, align 1
|
|
call void @scribble_on_i32(i32* %under_aligned)
|
|
store i32 0, i32* %x
|
|
%p = select i1 %flag, i32* %under_aligned, i32* %x
|
|
%v = load i32* %p
|
|
ret i32 %v
|
|
}
|
|
|
|
define i32 @test78(i1 %flag, i32* %x, i32* %y, i32* %z) {
|
|
; Test that we can speculate the loads around the select even when we can't
|
|
; fold the load completely away.
|
|
; CHECK-LABEL: @test78(
|
|
; CHECK: %[[V1:.*]] = load i32* %x
|
|
; CHECK-NEXT: %[[V2:.*]] = load i32* %y
|
|
; CHECK-NEXT: %[[S:.*]] = select i1 %flag, i32 %[[V1]], i32 %[[V2]]
|
|
; CHECK-NEXT: ret i32 %[[S]]
|
|
entry:
|
|
store i32 0, i32* %x
|
|
store i32 0, i32* %y
|
|
; Block forwarding by storing to %z which could alias either %x or %y.
|
|
store i32 42, i32* %z
|
|
%p = select i1 %flag, i32* %x, i32* %y
|
|
%v = load i32* %p
|
|
ret i32 %v
|
|
}
|
|
|
|
define float @test79(i1 %flag, float* %x, i32* %y, i32* %z) {
|
|
; Test that we can speculate the loads around the select even when we can't
|
|
; fold the load completely away.
|
|
; CHECK-LABEL: @test79(
|
|
; CHECK: %[[V1:.*]] = load float* %x
|
|
; CHECK-NEXT: %[[V2:.*]] = load float* %y
|
|
; CHECK-NEXT: %[[S:.*]] = select i1 %flag, float %[[V1]], float %[[V2]]
|
|
; CHECK-NEXT: ret float %[[S]]
|
|
entry:
|
|
%x1 = bitcast float* %x to i32*
|
|
%y1 = bitcast i32* %y to float*
|
|
store i32 0, i32* %x1
|
|
store i32 0, i32* %y
|
|
; Block forwarding by storing to %z which could alias either %x or %y.
|
|
store i32 42, i32* %z
|
|
%p = select i1 %flag, float* %x, float* %y1
|
|
%v = load float* %p
|
|
ret float %v
|
|
}
|
|
|
|
define i32 @test80(i1 %flag) {
|
|
; Test that when we speculate the loads around the select they fold throug
|
|
; load->load folding and load->store folding.
|
|
; CHECK-LABEL: @test80(
|
|
; CHECK: %[[X:.*]] = alloca i32
|
|
; CHECK-NEXT: %[[Y:.*]] = alloca i32
|
|
; CHECK: %[[V:.*]] = load i32* %[[X]]
|
|
; CHECK-NEXT: store i32 %[[V]], i32* %[[Y]]
|
|
; CHECK-NEXT: ret i32 %[[V]]
|
|
entry:
|
|
%x = alloca i32
|
|
%y = alloca i32
|
|
call void @scribble_on_i32(i32* %x)
|
|
call void @scribble_on_i32(i32* %y)
|
|
%tmp = load i32* %x
|
|
store i32 %tmp, i32* %y
|
|
%p = select i1 %flag, i32* %x, i32* %y
|
|
%v = load i32* %p
|
|
ret i32 %v
|
|
}
|
|
|
|
define float @test81(i1 %flag) {
|
|
; Test that we can speculate the load around the select even though they use
|
|
; differently typed pointers.
|
|
; CHECK-LABEL: @test81(
|
|
; CHECK: %[[X:.*]] = alloca i32
|
|
; CHECK-NEXT: %[[Y:.*]] = alloca i32
|
|
; CHECK: %[[V:.*]] = load i32* %[[X]]
|
|
; CHECK-NEXT: store i32 %[[V]], i32* %[[Y]]
|
|
; CHECK-NEXT: %[[C:.*]] = bitcast i32 %[[V]] to float
|
|
; CHECK-NEXT: ret float %[[C]]
|
|
entry:
|
|
%x = alloca float
|
|
%y = alloca i32
|
|
%x1 = bitcast float* %x to i32*
|
|
%y1 = bitcast i32* %y to float*
|
|
call void @scribble_on_i32(i32* %x1)
|
|
call void @scribble_on_i32(i32* %y)
|
|
%tmp = load i32* %x1
|
|
store i32 %tmp, i32* %y
|
|
%p = select i1 %flag, float* %x, float* %y1
|
|
%v = load float* %p
|
|
ret float %v
|
|
}
|
|
|
|
define i32 @test82(i1 %flag) {
|
|
; Test that we can speculate the load around the select even though they use
|
|
; differently typed pointers.
|
|
; CHECK-LABEL: @test82(
|
|
; CHECK: %[[X:.*]] = alloca float
|
|
; CHECK-NEXT: %[[Y:.*]] = alloca i32
|
|
; CHECK-NEXT: %[[X1:.*]] = bitcast float* %[[X]] to i32*
|
|
; CHECK-NEXT: %[[Y1:.*]] = bitcast i32* %[[Y]] to float*
|
|
; CHECK: %[[V:.*]] = load float* %[[X]]
|
|
; CHECK-NEXT: store float %[[V]], float* %[[Y1]]
|
|
; CHECK-NEXT: %[[C:.*]] = bitcast float %[[V]] to i32
|
|
; CHECK-NEXT: ret i32 %[[C]]
|
|
entry:
|
|
%x = alloca float
|
|
%y = alloca i32
|
|
%x1 = bitcast float* %x to i32*
|
|
%y1 = bitcast i32* %y to float*
|
|
call void @scribble_on_i32(i32* %x1)
|
|
call void @scribble_on_i32(i32* %y)
|
|
%tmp = load float* %x
|
|
store float %tmp, float* %y1
|
|
%p = select i1 %flag, i32* %x1, i32* %y
|
|
%v = load i32* %p
|
|
ret i32 %v
|
|
}
|
|
|
|
declare void @scribble_on_i64(i64*)
|
|
|
|
define i8* @test83(i1 %flag) {
|
|
; Test that we can speculate the load around the select even though they use
|
|
; differently typed pointers and requires inttoptr casts.
|
|
; CHECK-LABEL: @test83(
|
|
; CHECK: %[[X:.*]] = alloca i8*
|
|
; CHECK-NEXT: %[[Y:.*]] = alloca i8*
|
|
; CHECK: %[[V:.*]] = load i64* %[[X]]
|
|
; CHECK-NEXT: %[[C1:.*]] = inttoptr i64 %[[V]] to i8*
|
|
; CHECK-NEXT: store i8* %[[C1]], i8** %[[Y]]
|
|
; CHECK-NEXT: %[[C2:.*]] = inttoptr i64 %[[V]] to i8*
|
|
; CHECK-NEXT: %[[S:.*]] = select i1 %flag, i8* %[[C2]], i8* %[[C1]]
|
|
; CHECK-NEXT: ret i8* %[[S]]
|
|
entry:
|
|
%x = alloca i8*
|
|
%y = alloca i64
|
|
%x1 = bitcast i8** %x to i64*
|
|
%y1 = bitcast i64* %y to i8**
|
|
call void @scribble_on_i64(i64* %x1)
|
|
call void @scribble_on_i64(i64* %y)
|
|
%tmp = load i64* %x1
|
|
store i64 %tmp, i64* %y
|
|
%p = select i1 %flag, i8** %x, i8** %y1
|
|
%v = load i8** %p
|
|
ret i8* %v
|
|
}
|
|
|
|
define i64 @test84(i1 %flag) {
|
|
; Test that we can speculate the load around the select even though they use
|
|
; differently typed pointers and requires a ptrtoint cast.
|
|
; CHECK-LABEL: @test84(
|
|
; CHECK: %[[X:.*]] = alloca i8*
|
|
; CHECK-NEXT: %[[Y:.*]] = alloca i8*
|
|
; CHECK: %[[V:.*]] = load i8** %[[X]]
|
|
; CHECK-NEXT: store i8* %[[V]], i8** %[[Y]]
|
|
; CHECK-NEXT: %[[C:.*]] = ptrtoint i8* %[[V]] to i64
|
|
; CHECK-NEXT: ret i64 %[[C]]
|
|
entry:
|
|
%x = alloca i8*
|
|
%y = alloca i64
|
|
%x1 = bitcast i8** %x to i64*
|
|
%y1 = bitcast i64* %y to i8**
|
|
call void @scribble_on_i64(i64* %x1)
|
|
call void @scribble_on_i64(i64* %y)
|
|
%tmp = load i8** %x
|
|
store i8* %tmp, i8** %y1
|
|
%p = select i1 %flag, i64* %x1, i64* %y
|
|
%v = load i64* %p
|
|
ret i64 %v
|
|
}
|