mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-12-13 04:30:23 +00:00
024d943bca
One performs: (X == 13 | X == 14) -> X-13 <u 2 The other: (A == C1 || A == C2) -> (A & ~(C1 ^ C2)) == C1 The problem is that there are certain values of C1 and C2 that trigger both transforms but the first one blocks out the second, this generates suboptimal code. Reordering the transforms should be better in every case and allows us to do interesting stuff like turn: %shr = lshr i32 %X, 4 %and = and i32 %shr, 15 %add = add i32 %and, -14 %tobool = icmp ne i32 %add, 0 into: %and = and i32 %X, 240 %tobool = icmp ne i32 %and, 224 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@179493 91177308-0d34-0410-b5e6-96231b3b80d8
979 lines
21 KiB
LLVM
979 lines
21 KiB
LLVM
; RUN: opt < %s -instcombine -S | FileCheck %s
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target datalayout =
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"e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64"
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define i32 @test1(i32 %X) {
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entry:
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icmp slt i32 %X, 0 ; <i1>:0 [#uses=1]
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zext i1 %0 to i32 ; <i32>:1 [#uses=1]
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ret i32 %1
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; CHECK: @test1
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; CHECK: lshr i32 %X, 31
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; CHECK-NEXT: ret i32
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}
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define i32 @test2(i32 %X) {
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entry:
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icmp ult i32 %X, -2147483648 ; <i1>:0 [#uses=1]
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zext i1 %0 to i32 ; <i32>:1 [#uses=1]
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ret i32 %1
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; CHECK: @test2
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; CHECK: lshr i32 %X, 31
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; CHECK-NEXT: xor i32
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; CHECK-NEXT: ret i32
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}
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define i32 @test3(i32 %X) {
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entry:
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icmp slt i32 %X, 0 ; <i1>:0 [#uses=1]
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sext i1 %0 to i32 ; <i32>:1 [#uses=1]
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ret i32 %1
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; CHECK: @test3
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; CHECK: ashr i32 %X, 31
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; CHECK-NEXT: ret i32
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}
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define i32 @test4(i32 %X) {
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entry:
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icmp ult i32 %X, -2147483648 ; <i1>:0 [#uses=1]
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sext i1 %0 to i32 ; <i32>:1 [#uses=1]
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ret i32 %1
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; CHECK: @test4
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; CHECK: ashr i32 %X, 31
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; CHECK-NEXT: xor i32
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; CHECK-NEXT: ret i32
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}
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; PR4837
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define <2 x i1> @test5(<2 x i64> %x) {
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entry:
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%V = icmp eq <2 x i64> %x, undef
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ret <2 x i1> %V
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; CHECK: @test5
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; CHECK: ret <2 x i1> <i1 true, i1 true>
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}
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define i32 @test6(i32 %a, i32 %b) {
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%c = icmp sle i32 %a, -1
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%d = zext i1 %c to i32
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%e = sub i32 0, %d
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%f = and i32 %e, %b
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ret i32 %f
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; CHECK: @test6
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; CHECK-NEXT: ashr i32 %a, 31
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; CHECK-NEXT: %f = and i32 %e, %b
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; CHECK-NEXT: ret i32 %f
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}
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define i1 @test7(i32 %x) {
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entry:
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%a = add i32 %x, -1
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%b = icmp ult i32 %a, %x
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ret i1 %b
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; CHECK: @test7
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; CHECK: %b = icmp ne i32 %x, 0
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; CHECK: ret i1 %b
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}
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define i1 @test8(i32 %x){
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entry:
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%a = add i32 %x, -1
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%b = icmp eq i32 %a, %x
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ret i1 %b
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; CHECK: @test8
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; CHECK: ret i1 false
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}
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define i1 @test9(i32 %x) {
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entry:
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%a = add i32 %x, -2
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%b = icmp ugt i32 %x, %a
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ret i1 %b
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; CHECK: @test9
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; CHECK: icmp ugt i32 %x, 1
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; CHECK: ret i1 %b
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}
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define i1 @test10(i32 %x){
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entry:
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%a = add i32 %x, -1
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%b = icmp slt i32 %a, %x
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ret i1 %b
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; CHECK: @test10
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; CHECK: %b = icmp ne i32 %x, -2147483648
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; CHECK: ret i1 %b
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}
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define i1 @test11(i32 %x) {
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%a = add nsw i32 %x, 8
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%b = icmp slt i32 %x, %a
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ret i1 %b
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; CHECK: @test11
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; CHECK: ret i1 true
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}
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; PR6195
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define i1 @test12(i1 %A) {
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%S = select i1 %A, i64 -4294967295, i64 8589934591
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%B = icmp ne i64 bitcast (<2 x i32> <i32 1, i32 -1> to i64), %S
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ret i1 %B
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; CHECK: @test12
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; CHECK-NEXT: = xor i1 %A, true
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; CHECK-NEXT: ret i1
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}
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; PR6481
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define i1 @test13(i8 %X) nounwind readnone {
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entry:
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%cmp = icmp slt i8 undef, %X
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ret i1 %cmp
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; CHECK: @test13
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; CHECK: ret i1 false
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}
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define i1 @test14(i8 %X) nounwind readnone {
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entry:
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%cmp = icmp slt i8 undef, -128
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ret i1 %cmp
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; CHECK: @test14
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; CHECK: ret i1 false
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}
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define i1 @test15() nounwind readnone {
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entry:
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%cmp = icmp eq i8 undef, -128
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ret i1 %cmp
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; CHECK: @test15
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; CHECK: ret i1 undef
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}
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define i1 @test16() nounwind readnone {
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entry:
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%cmp = icmp ne i8 undef, -128
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ret i1 %cmp
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; CHECK: @test16
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; CHECK: ret i1 undef
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}
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define i1 @test17(i32 %x) nounwind {
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%shl = shl i32 1, %x
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%and = and i32 %shl, 8
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%cmp = icmp eq i32 %and, 0
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ret i1 %cmp
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; CHECK: @test17
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; CHECK-NEXT: %cmp = icmp ne i32 %x, 3
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}
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define i1 @test18(i32 %x) nounwind {
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%sh = lshr i32 8, %x
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%and = and i32 %sh, 1
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%cmp = icmp eq i32 %and, 0
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ret i1 %cmp
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; CHECK: @test18
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; CHECK-NEXT: %cmp = icmp ne i32 %x, 3
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}
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define i1 @test19(i32 %x) nounwind {
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%shl = shl i32 1, %x
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%and = and i32 %shl, 8
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%cmp = icmp eq i32 %and, 8
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ret i1 %cmp
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; CHECK: @test19
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; CHECK-NEXT: %cmp = icmp eq i32 %x, 3
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}
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define i1 @test20(i32 %x) nounwind {
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%shl = shl i32 1, %x
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%and = and i32 %shl, 8
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%cmp = icmp ne i32 %and, 0
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ret i1 %cmp
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; CHECK: @test20
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; CHECK-NEXT: %cmp = icmp eq i32 %x, 3
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}
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define i1 @test21(i8 %x, i8 %y) {
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; CHECK: @test21
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; CHECK-NOT: or i8
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; CHECK: icmp ugt
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%A = or i8 %x, 1
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%B = icmp ugt i8 %A, 3
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ret i1 %B
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}
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define i1 @test22(i8 %x, i8 %y) {
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; CHECK: @test22
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; CHECK-NOT: or i8
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; CHECK: icmp ult
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%A = or i8 %x, 1
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%B = icmp ult i8 %A, 4
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ret i1 %B
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}
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; PR2740
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; CHECK: @test23
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; CHECK: icmp sgt i32 %x, 1328634634
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define i1 @test23(i32 %x) nounwind {
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%i3 = sdiv i32 %x, -1328634635
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%i4 = icmp eq i32 %i3, -1
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ret i1 %i4
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}
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@X = global [1000 x i32] zeroinitializer
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; PR8882
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; CHECK: @test24
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; CHECK: %cmp = icmp eq i64 %i, 1000
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; CHECK: ret i1 %cmp
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define i1 @test24(i64 %i) {
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%p1 = getelementptr inbounds i32* getelementptr inbounds ([1000 x i32]* @X, i64 0, i64 0), i64 %i
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%cmp = icmp eq i32* %p1, getelementptr inbounds ([1000 x i32]* @X, i64 1, i64 0)
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ret i1 %cmp
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}
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; CHECK: @test25
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; X + Z > Y + Z -> X > Y if there is no overflow.
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; CHECK: %c = icmp sgt i32 %x, %y
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; CHECK: ret i1 %c
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define i1 @test25(i32 %x, i32 %y, i32 %z) {
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%lhs = add nsw i32 %x, %z
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%rhs = add nsw i32 %y, %z
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%c = icmp sgt i32 %lhs, %rhs
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ret i1 %c
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}
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; CHECK: @test26
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; X + Z > Y + Z -> X > Y if there is no overflow.
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; CHECK: %c = icmp ugt i32 %x, %y
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; CHECK: ret i1 %c
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define i1 @test26(i32 %x, i32 %y, i32 %z) {
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%lhs = add nuw i32 %x, %z
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%rhs = add nuw i32 %y, %z
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%c = icmp ugt i32 %lhs, %rhs
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ret i1 %c
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}
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; CHECK: @test27
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; X - Z > Y - Z -> X > Y if there is no overflow.
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; CHECK: %c = icmp sgt i32 %x, %y
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; CHECK: ret i1 %c
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define i1 @test27(i32 %x, i32 %y, i32 %z) {
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%lhs = sub nsw i32 %x, %z
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%rhs = sub nsw i32 %y, %z
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%c = icmp sgt i32 %lhs, %rhs
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ret i1 %c
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}
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; CHECK: @test28
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; X - Z > Y - Z -> X > Y if there is no overflow.
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; CHECK: %c = icmp ugt i32 %x, %y
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; CHECK: ret i1 %c
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define i1 @test28(i32 %x, i32 %y, i32 %z) {
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%lhs = sub nuw i32 %x, %z
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%rhs = sub nuw i32 %y, %z
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%c = icmp ugt i32 %lhs, %rhs
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ret i1 %c
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}
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; CHECK: @test29
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; X + Y > X -> Y > 0 if there is no overflow.
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; CHECK: %c = icmp sgt i32 %y, 0
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; CHECK: ret i1 %c
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define i1 @test29(i32 %x, i32 %y) {
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%lhs = add nsw i32 %x, %y
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%c = icmp sgt i32 %lhs, %x
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ret i1 %c
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}
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; CHECK: @test30
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; X + Y > X -> Y > 0 if there is no overflow.
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; CHECK: %c = icmp ne i32 %y, 0
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; CHECK: ret i1 %c
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define i1 @test30(i32 %x, i32 %y) {
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%lhs = add nuw i32 %x, %y
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%c = icmp ugt i32 %lhs, %x
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ret i1 %c
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}
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; CHECK: @test31
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; X > X + Y -> 0 > Y if there is no overflow.
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; CHECK: %c = icmp slt i32 %y, 0
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; CHECK: ret i1 %c
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define i1 @test31(i32 %x, i32 %y) {
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%rhs = add nsw i32 %x, %y
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%c = icmp sgt i32 %x, %rhs
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ret i1 %c
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}
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; CHECK: @test32
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; X > X + Y -> 0 > Y if there is no overflow.
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; CHECK: ret i1 false
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define i1 @test32(i32 %x, i32 %y) {
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%rhs = add nuw i32 %x, %y
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%c = icmp ugt i32 %x, %rhs
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ret i1 %c
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}
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; CHECK: @test33
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; X - Y > X -> 0 > Y if there is no overflow.
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; CHECK: %c = icmp slt i32 %y, 0
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; CHECK: ret i1 %c
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define i1 @test33(i32 %x, i32 %y) {
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%lhs = sub nsw i32 %x, %y
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%c = icmp sgt i32 %lhs, %x
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ret i1 %c
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}
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; CHECK: @test34
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; X - Y > X -> 0 > Y if there is no overflow.
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; CHECK: ret i1 false
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define i1 @test34(i32 %x, i32 %y) {
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%lhs = sub nuw i32 %x, %y
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%c = icmp ugt i32 %lhs, %x
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ret i1 %c
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}
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; CHECK: @test35
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; X > X - Y -> Y > 0 if there is no overflow.
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; CHECK: %c = icmp sgt i32 %y, 0
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; CHECK: ret i1 %c
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define i1 @test35(i32 %x, i32 %y) {
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%rhs = sub nsw i32 %x, %y
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%c = icmp sgt i32 %x, %rhs
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ret i1 %c
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}
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; CHECK: @test36
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; X > X - Y -> Y > 0 if there is no overflow.
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; CHECK: %c = icmp ne i32 %y, 0
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; CHECK: ret i1 %c
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define i1 @test36(i32 %x, i32 %y) {
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%rhs = sub nuw i32 %x, %y
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%c = icmp ugt i32 %x, %rhs
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ret i1 %c
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}
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; CHECK: @test37
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; X - Y > X - Z -> Z > Y if there is no overflow.
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; CHECK: %c = icmp sgt i32 %z, %y
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; CHECK: ret i1 %c
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define i1 @test37(i32 %x, i32 %y, i32 %z) {
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%lhs = sub nsw i32 %x, %y
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%rhs = sub nsw i32 %x, %z
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%c = icmp sgt i32 %lhs, %rhs
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ret i1 %c
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}
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; CHECK: @test38
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; X - Y > X - Z -> Z > Y if there is no overflow.
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; CHECK: %c = icmp ugt i32 %z, %y
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; CHECK: ret i1 %c
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define i1 @test38(i32 %x, i32 %y, i32 %z) {
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%lhs = sub nuw i32 %x, %y
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%rhs = sub nuw i32 %x, %z
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%c = icmp ugt i32 %lhs, %rhs
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ret i1 %c
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}
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; PR9343 #1
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; CHECK: @test39
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; CHECK: %B = icmp eq i32 %X, 0
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define i1 @test39(i32 %X, i32 %Y) {
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%A = ashr exact i32 %X, %Y
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%B = icmp eq i32 %A, 0
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ret i1 %B
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}
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; CHECK: @test40
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; CHECK: %B = icmp ne i32 %X, 0
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define i1 @test40(i32 %X, i32 %Y) {
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%A = lshr exact i32 %X, %Y
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%B = icmp ne i32 %A, 0
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ret i1 %B
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}
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; PR9343 #3
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; CHECK: @test41
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; CHECK: ret i1 true
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define i1 @test41(i32 %X, i32 %Y) {
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%A = urem i32 %X, %Y
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%B = icmp ugt i32 %Y, %A
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ret i1 %B
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}
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; CHECK: @test42
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; CHECK: %B = icmp sgt i32 %Y, -1
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define i1 @test42(i32 %X, i32 %Y) {
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%A = srem i32 %X, %Y
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%B = icmp slt i32 %A, %Y
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ret i1 %B
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}
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; CHECK: @test43
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; CHECK: %B = icmp slt i32 %Y, 0
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define i1 @test43(i32 %X, i32 %Y) {
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%A = srem i32 %X, %Y
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%B = icmp slt i32 %Y, %A
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ret i1 %B
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}
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; CHECK: @test44
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; CHECK: %B = icmp sgt i32 %Y, -1
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define i1 @test44(i32 %X, i32 %Y) {
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%A = srem i32 %X, %Y
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%B = icmp slt i32 %A, %Y
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ret i1 %B
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}
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; CHECK: @test45
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; CHECK: %B = icmp slt i32 %Y, 0
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define i1 @test45(i32 %X, i32 %Y) {
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%A = srem i32 %X, %Y
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%B = icmp slt i32 %Y, %A
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ret i1 %B
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}
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; PR9343 #4
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; CHECK: @test46
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; CHECK: %C = icmp ult i32 %X, %Y
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define i1 @test46(i32 %X, i32 %Y, i32 %Z) {
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%A = ashr exact i32 %X, %Z
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%B = ashr exact i32 %Y, %Z
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%C = icmp ult i32 %A, %B
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ret i1 %C
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}
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; PR9343 #5
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; CHECK: @test47
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; CHECK: %C = icmp ugt i32 %X, %Y
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define i1 @test47(i32 %X, i32 %Y, i32 %Z) {
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%A = ashr exact i32 %X, %Z
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%B = ashr exact i32 %Y, %Z
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%C = icmp ugt i32 %A, %B
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ret i1 %C
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}
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; PR9343 #8
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; CHECK: @test48
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; CHECK: %C = icmp eq i32 %X, %Y
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define i1 @test48(i32 %X, i32 %Y, i32 %Z) {
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%A = sdiv exact i32 %X, %Z
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%B = sdiv exact i32 %Y, %Z
|
|
%C = icmp eq i32 %A, %B
|
|
ret i1 %C
|
|
}
|
|
|
|
; PR8469
|
|
; CHECK: @test49
|
|
; CHECK: ret <2 x i1> <i1 true, i1 true>
|
|
define <2 x i1> @test49(<2 x i32> %tmp3) {
|
|
entry:
|
|
%tmp11 = and <2 x i32> %tmp3, <i32 3, i32 3>
|
|
%cmp = icmp ult <2 x i32> %tmp11, <i32 4, i32 4>
|
|
ret <2 x i1> %cmp
|
|
}
|
|
|
|
; PR9343 #7
|
|
; CHECK: @test50
|
|
; CHECK: ret i1 true
|
|
define i1 @test50(i16 %X, i32 %Y) {
|
|
%A = zext i16 %X to i32
|
|
%B = srem i32 %A, %Y
|
|
%C = icmp sgt i32 %B, -1
|
|
ret i1 %C
|
|
}
|
|
|
|
; CHECK: @test51
|
|
; CHECK: ret i1 %C
|
|
define i1 @test51(i32 %X, i32 %Y) {
|
|
%A = and i32 %X, 2147483648
|
|
%B = srem i32 %A, %Y
|
|
%C = icmp sgt i32 %B, -1
|
|
ret i1 %C
|
|
}
|
|
|
|
; CHECK: @test52
|
|
; CHECK-NEXT: and i32 %x1, 16711935
|
|
; CHECK-NEXT: icmp eq i32 {{.*}}, 4980863
|
|
; CHECK-NEXT: ret i1
|
|
define i1 @test52(i32 %x1) nounwind {
|
|
%conv = and i32 %x1, 255
|
|
%cmp = icmp eq i32 %conv, 127
|
|
%tmp2 = lshr i32 %x1, 16
|
|
%tmp3 = trunc i32 %tmp2 to i8
|
|
%cmp15 = icmp eq i8 %tmp3, 76
|
|
|
|
%A = and i1 %cmp, %cmp15
|
|
ret i1 %A
|
|
}
|
|
|
|
; PR9838
|
|
; CHECK: @test53
|
|
; CHECK-NEXT: ashr exact
|
|
; CHECK-NEXT: ashr
|
|
; CHECK-NEXT: icmp
|
|
define i1 @test53(i32 %a, i32 %b) nounwind {
|
|
%x = ashr exact i32 %a, 30
|
|
%y = ashr i32 %b, 30
|
|
%z = icmp eq i32 %x, %y
|
|
ret i1 %z
|
|
}
|
|
|
|
; CHECK: @test54
|
|
; CHECK-NEXT: %and = and i8 %a, -64
|
|
; CHECK-NEXT: icmp eq i8 %and, -128
|
|
define i1 @test54(i8 %a) nounwind {
|
|
%ext = zext i8 %a to i32
|
|
%and = and i32 %ext, 192
|
|
%ret = icmp eq i32 %and, 128
|
|
ret i1 %ret
|
|
}
|
|
|
|
; CHECK: @test55
|
|
; CHECK-NEXT: icmp eq i32 %a, -123
|
|
define i1 @test55(i32 %a) {
|
|
%sub = sub i32 0, %a
|
|
%cmp = icmp eq i32 %sub, 123
|
|
ret i1 %cmp
|
|
}
|
|
|
|
; CHECK: @test56
|
|
; CHECK-NEXT: icmp eq i32 %a, -113
|
|
define i1 @test56(i32 %a) {
|
|
%sub = sub i32 10, %a
|
|
%cmp = icmp eq i32 %sub, 123
|
|
ret i1 %cmp
|
|
}
|
|
|
|
; PR10267 Don't make icmps more expensive when no other inst is subsumed.
|
|
declare void @foo(i32)
|
|
; CHECK: @test57
|
|
; CHECK: %and = and i32 %a, -2
|
|
; CHECK: %cmp = icmp ne i32 %and, 0
|
|
define i1 @test57(i32 %a) {
|
|
%and = and i32 %a, -2
|
|
%cmp = icmp ne i32 %and, 0
|
|
call void @foo(i32 %and)
|
|
ret i1 %cmp
|
|
}
|
|
|
|
; rdar://problem/10482509
|
|
; CHECK: @cmpabs1
|
|
; CHECK-NEXT: icmp ne
|
|
define zeroext i1 @cmpabs1(i64 %val) {
|
|
%sub = sub nsw i64 0, %val
|
|
%cmp = icmp slt i64 %val, 0
|
|
%sub.val = select i1 %cmp, i64 %sub, i64 %val
|
|
%tobool = icmp ne i64 %sub.val, 0
|
|
ret i1 %tobool
|
|
}
|
|
|
|
; CHECK: @cmpabs2
|
|
; CHECK-NEXT: icmp ne
|
|
define zeroext i1 @cmpabs2(i64 %val) {
|
|
%sub = sub nsw i64 0, %val
|
|
%cmp = icmp slt i64 %val, 0
|
|
%sub.val = select i1 %cmp, i64 %val, i64 %sub
|
|
%tobool = icmp ne i64 %sub.val, 0
|
|
ret i1 %tobool
|
|
}
|
|
|
|
; CHECK: @test58
|
|
; CHECK-NEXT: call i32 @test58_d(i64 36029346783166592)
|
|
define void @test58() nounwind {
|
|
%cast = bitcast <1 x i64> <i64 36029346783166592> to i64
|
|
%call = call i32 @test58_d( i64 %cast) nounwind
|
|
ret void
|
|
}
|
|
declare i32 @test58_d(i64)
|
|
|
|
define i1 @test59(i8* %foo) {
|
|
%bit = bitcast i8* %foo to i32*
|
|
%gep1 = getelementptr inbounds i32* %bit, i64 2
|
|
%gep2 = getelementptr inbounds i8* %foo, i64 10
|
|
%cast1 = bitcast i32* %gep1 to i8*
|
|
%cmp = icmp ult i8* %cast1, %gep2
|
|
%use = ptrtoint i8* %cast1 to i64
|
|
%call = call i32 @test58_d(i64 %use) nounwind
|
|
ret i1 %cmp
|
|
; CHECK: @test59
|
|
; CHECK: ret i1 true
|
|
}
|
|
|
|
define i1 @test60(i8* %foo, i64 %i, i64 %j) {
|
|
%bit = bitcast i8* %foo to i32*
|
|
%gep1 = getelementptr inbounds i32* %bit, i64 %i
|
|
%gep2 = getelementptr inbounds i8* %foo, i64 %j
|
|
%cast1 = bitcast i32* %gep1 to i8*
|
|
%cmp = icmp ult i8* %cast1, %gep2
|
|
ret i1 %cmp
|
|
; CHECK: @test60
|
|
; CHECK-NEXT: %gep1.idx = shl nuw i64 %i, 2
|
|
; CHECK-NEXT: icmp slt i64 %gep1.idx, %j
|
|
; CHECK-NEXT: ret i1
|
|
}
|
|
|
|
define i1 @test61(i8* %foo, i64 %i, i64 %j) {
|
|
%bit = bitcast i8* %foo to i32*
|
|
%gep1 = getelementptr i32* %bit, i64 %i
|
|
%gep2 = getelementptr i8* %foo, i64 %j
|
|
%cast1 = bitcast i32* %gep1 to i8*
|
|
%cmp = icmp ult i8* %cast1, %gep2
|
|
ret i1 %cmp
|
|
; Don't transform non-inbounds GEPs.
|
|
; CHECK: @test61
|
|
; CHECK: icmp ult i8* %cast1, %gep2
|
|
; CHECK-NEXT: ret i1
|
|
}
|
|
|
|
define i1 @test62(i8* %a) {
|
|
%arrayidx1 = getelementptr inbounds i8* %a, i64 1
|
|
%arrayidx2 = getelementptr inbounds i8* %a, i64 10
|
|
%cmp = icmp slt i8* %arrayidx1, %arrayidx2
|
|
ret i1 %cmp
|
|
; CHECK: @test62
|
|
; CHECK-NEXT: ret i1 true
|
|
}
|
|
|
|
define i1 @test63(i8 %a, i32 %b) nounwind {
|
|
%z = zext i8 %a to i32
|
|
%t = and i32 %b, 255
|
|
%c = icmp eq i32 %z, %t
|
|
ret i1 %c
|
|
; CHECK: @test63
|
|
; CHECK-NEXT: %1 = trunc i32 %b to i8
|
|
; CHECK-NEXT: %c = icmp eq i8 %1, %a
|
|
; CHECK-NEXT: ret i1 %c
|
|
}
|
|
|
|
define i1 @test64(i8 %a, i32 %b) nounwind {
|
|
%t = and i32 %b, 255
|
|
%z = zext i8 %a to i32
|
|
%c = icmp eq i32 %t, %z
|
|
ret i1 %c
|
|
; CHECK: @test64
|
|
; CHECK-NEXT: %1 = trunc i32 %b to i8
|
|
; CHECK-NEXT: %c = icmp eq i8 %1, %a
|
|
; CHECK-NEXT: ret i1 %c
|
|
}
|
|
|
|
define i1 @test65(i64 %A, i64 %B) {
|
|
%s1 = add i64 %A, %B
|
|
%s2 = add i64 %A, %B
|
|
%cmp = icmp eq i64 %s1, %s2
|
|
; CHECK: @test65
|
|
; CHECK-NEXT: ret i1 true
|
|
ret i1 %cmp
|
|
}
|
|
|
|
define i1 @test66(i64 %A, i64 %B) {
|
|
%s1 = add i64 %A, %B
|
|
%s2 = add i64 %B, %A
|
|
%cmp = icmp eq i64 %s1, %s2
|
|
; CHECK: @test66
|
|
; CHECK-NEXT: ret i1 true
|
|
ret i1 %cmp
|
|
}
|
|
|
|
; CHECK: @test67
|
|
; CHECK: %and = and i32 %x, 96
|
|
; CHECK: %cmp = icmp ne i32 %and, 0
|
|
define i1 @test67(i32 %x) nounwind uwtable {
|
|
%and = and i32 %x, 127
|
|
%cmp = icmp sgt i32 %and, 31
|
|
ret i1 %cmp
|
|
}
|
|
|
|
; CHECK: @test68
|
|
; CHECK: %cmp = icmp ugt i32 %and, 30
|
|
define i1 @test68(i32 %x) nounwind uwtable {
|
|
%and = and i32 %x, 127
|
|
%cmp = icmp sgt i32 %and, 30
|
|
ret i1 %cmp
|
|
}
|
|
|
|
; PR14708
|
|
; CHECK: @test69
|
|
; CHECK: %1 = and i32 %c, -33
|
|
; CHECK: %2 = icmp eq i32 %1, 65
|
|
; CHECK: ret i1 %2
|
|
define i1 @test69(i32 %c) nounwind uwtable {
|
|
%1 = icmp eq i32 %c, 97
|
|
%2 = icmp eq i32 %c, 65
|
|
%3 = or i1 %1, %2
|
|
ret i1 %3
|
|
}
|
|
|
|
; CHECK: @icmp_sext16trunc
|
|
; CHECK-NEXT: %1 = trunc i32 %x to i16
|
|
; CHECK-NEXT: %cmp = icmp slt i16 %1, 36
|
|
define i1 @icmp_sext16trunc(i32 %x) {
|
|
%trunc = trunc i32 %x to i16
|
|
%sext = sext i16 %trunc to i32
|
|
%cmp = icmp slt i32 %sext, 36
|
|
ret i1 %cmp
|
|
}
|
|
|
|
; CHECK: @icmp_sext8trunc
|
|
; CHECK-NEXT: %1 = trunc i32 %x to i8
|
|
; CHECK-NEXT: %cmp = icmp slt i8 %1, 36
|
|
define i1 @icmp_sext8trunc(i32 %x) {
|
|
%trunc = trunc i32 %x to i8
|
|
%sext = sext i8 %trunc to i32
|
|
%cmp = icmp slt i32 %sext, 36
|
|
ret i1 %cmp
|
|
}
|
|
|
|
; CHECK: @icmp_shl16
|
|
; CHECK-NEXT: %1 = trunc i32 %x to i16
|
|
; CHECK-NEXT: %cmp = icmp slt i16 %1, 36
|
|
define i1 @icmp_shl16(i32 %x) {
|
|
%shl = shl i32 %x, 16
|
|
%cmp = icmp slt i32 %shl, 2359296
|
|
ret i1 %cmp
|
|
}
|
|
|
|
; CHECK: @icmp_shl24
|
|
; CHECK-NEXT: %1 = trunc i32 %x to i8
|
|
; CHECK-NEXT: %cmp = icmp slt i8 %1, 36
|
|
define i1 @icmp_shl24(i32 %x) {
|
|
%shl = shl i32 %x, 24
|
|
%cmp = icmp slt i32 %shl, 603979776
|
|
ret i1 %cmp
|
|
}
|
|
|
|
; If the (shl x, C) preserved the sign and this is a sign test,
|
|
; compare the LHS operand instead
|
|
; CHECK: @icmp_shl_nsw_sgt
|
|
; CHECK-NEXT: icmp sgt i32 %x, 0
|
|
define i1 @icmp_shl_nsw_sgt(i32 %x) {
|
|
%shl = shl nsw i32 %x, 21
|
|
%cmp = icmp sgt i32 %shl, 0
|
|
ret i1 %cmp
|
|
}
|
|
|
|
; CHECK: @icmp_shl_nsw_sge0
|
|
; CHECK-NEXT: icmp sgt i32 %x, -1
|
|
define i1 @icmp_shl_nsw_sge0(i32 %x) {
|
|
%shl = shl nsw i32 %x, 21
|
|
%cmp = icmp sge i32 %shl, 0
|
|
ret i1 %cmp
|
|
}
|
|
|
|
; CHECK: @icmp_shl_nsw_sge1
|
|
; CHECK-NEXT: icmp sgt i32 %x, 0
|
|
define i1 @icmp_shl_nsw_sge1(i32 %x) {
|
|
%shl = shl nsw i32 %x, 21
|
|
%cmp = icmp sge i32 %shl, 1
|
|
ret i1 %cmp
|
|
}
|
|
|
|
; Checks for icmp (eq|ne) (shl x, C), 0
|
|
; CHECK: @icmp_shl_nsw_eq
|
|
; CHECK-NEXT: icmp eq i32 %x, 0
|
|
define i1 @icmp_shl_nsw_eq(i32 %x) {
|
|
%mul = shl nsw i32 %x, 5
|
|
%cmp = icmp eq i32 %mul, 0
|
|
ret i1 %cmp
|
|
}
|
|
|
|
; CHECK: @icmp_shl_eq
|
|
; CHECK-NOT: icmp eq i32 %mul, 0
|
|
define i1 @icmp_shl_eq(i32 %x) {
|
|
%mul = shl i32 %x, 5
|
|
%cmp = icmp eq i32 %mul, 0
|
|
ret i1 %cmp
|
|
}
|
|
|
|
; CHECK: @icmp_shl_nsw_ne
|
|
; CHECK-NEXT: icmp ne i32 %x, 0
|
|
define i1 @icmp_shl_nsw_ne(i32 %x) {
|
|
%mul = shl nsw i32 %x, 7
|
|
%cmp = icmp ne i32 %mul, 0
|
|
ret i1 %cmp
|
|
}
|
|
|
|
; CHECK: @icmp_shl_ne
|
|
; CHECK-NOT: icmp ne i32 %x, 0
|
|
define i1 @icmp_shl_ne(i32 %x) {
|
|
%mul = shl i32 %x, 7
|
|
%cmp = icmp ne i32 %mul, 0
|
|
ret i1 %cmp
|
|
}
|
|
|
|
; If the (mul x, C) preserved the sign and this is sign test,
|
|
; compare the LHS operand instead
|
|
; CHECK: @icmp_mul_nsw
|
|
; CHECK-NEXT: icmp sgt i32 %x, 0
|
|
define i1 @icmp_mul_nsw(i32 %x) {
|
|
%mul = mul nsw i32 %x, 12
|
|
%cmp = icmp sgt i32 %mul, 0
|
|
ret i1 %cmp
|
|
}
|
|
|
|
; CHECK: @icmp_mul_nsw1
|
|
; CHECK-NEXT: icmp slt i32 %x, 0
|
|
define i1 @icmp_mul_nsw1(i32 %x) {
|
|
%mul = mul nsw i32 %x, 12
|
|
%cmp = icmp sle i32 %mul, -1
|
|
ret i1 %cmp
|
|
}
|
|
|
|
; CHECK: @icmp_mul_nsw_neg
|
|
; CHECK-NEXT: icmp slt i32 %x, 1
|
|
define i1 @icmp_mul_nsw_neg(i32 %x) {
|
|
%mul = mul nsw i32 %x, -12
|
|
%cmp = icmp sge i32 %mul, 0
|
|
ret i1 %cmp
|
|
}
|
|
|
|
; CHECK: @icmp_mul_nsw_neg1
|
|
; CHECK-NEXT: icmp slt i32 %x, 0
|
|
define i1 @icmp_mul_nsw_neg1(i32 %x) {
|
|
%mul = mul nsw i32 %x, -12
|
|
%cmp = icmp sge i32 %mul, 1
|
|
ret i1 %cmp
|
|
}
|
|
|
|
; CHECK: @icmp_mul_nsw_0
|
|
; CHECK-NOT: icmp sgt i32 %x, 0
|
|
define i1 @icmp_mul_nsw_0(i32 %x) {
|
|
%mul = mul nsw i32 %x, 0
|
|
%cmp = icmp sgt i32 %mul, 0
|
|
ret i1 %cmp
|
|
}
|
|
|
|
; CHECK: @icmp_mul
|
|
; CHECK-NEXT: %mul = mul i32 %x, -12
|
|
define i1 @icmp_mul(i32 %x) {
|
|
%mul = mul i32 %x, -12
|
|
%cmp = icmp sge i32 %mul, 0
|
|
ret i1 %cmp
|
|
}
|
|
|
|
; Checks for icmp (eq|ne) (mul x, C), 0
|
|
; CHECK: @icmp_mul_neq0
|
|
; CHECK-NEXT: icmp ne i32 %x, 0
|
|
define i1 @icmp_mul_neq0(i32 %x) {
|
|
%mul = mul nsw i32 %x, -12
|
|
%cmp = icmp ne i32 %mul, 0
|
|
ret i1 %cmp
|
|
}
|
|
|
|
; CHECK: @icmp_mul_eq0
|
|
; CHECK-NEXT: icmp eq i32 %x, 0
|
|
define i1 @icmp_mul_eq0(i32 %x) {
|
|
%mul = mul nsw i32 %x, 12
|
|
%cmp = icmp eq i32 %mul, 0
|
|
ret i1 %cmp
|
|
}
|
|
|
|
; CHECK: @icmp_mul0_eq0
|
|
; CHECK-NEXT: ret i1 true
|
|
define i1 @icmp_mul0_eq0(i32 %x) {
|
|
%mul = mul i32 %x, 0
|
|
%cmp = icmp eq i32 %mul, 0
|
|
ret i1 %cmp
|
|
}
|
|
|
|
; CHECK: @icmp_mul0_ne0
|
|
; CHECK-NEXT: ret i1 false
|
|
define i1 @icmp_mul0_ne0(i32 %x) {
|
|
%mul = mul i32 %x, 0
|
|
%cmp = icmp ne i32 %mul, 0
|
|
ret i1 %cmp
|
|
}
|
|
|
|
; CHECK: @icmp_sub1_sge
|
|
; CHECK-NEXT: icmp sgt i32 %x, %y
|
|
define i1 @icmp_sub1_sge(i32 %x, i32 %y) {
|
|
%sub = add nsw i32 %x, -1
|
|
%cmp = icmp sge i32 %sub, %y
|
|
ret i1 %cmp
|
|
}
|
|
|
|
; CHECK: @icmp_add1_sgt
|
|
; CHECK-NEXT: icmp sge i32 %x, %y
|
|
define i1 @icmp_add1_sgt(i32 %x, i32 %y) {
|
|
%add = add nsw i32 %x, 1
|
|
%cmp = icmp sgt i32 %add, %y
|
|
ret i1 %cmp
|
|
}
|
|
|
|
; CHECK: @icmp_sub1_slt
|
|
; CHECK-NEXT: icmp sle i32 %x, %y
|
|
define i1 @icmp_sub1_slt(i32 %x, i32 %y) {
|
|
%sub = add nsw i32 %x, -1
|
|
%cmp = icmp slt i32 %sub, %y
|
|
ret i1 %cmp
|
|
}
|
|
|
|
; CHECK: @icmp_add1_sle
|
|
; CHECK-NEXT: icmp slt i32 %x, %y
|
|
define i1 @icmp_add1_sle(i32 %x, i32 %y) {
|
|
%add = add nsw i32 %x, 1
|
|
%cmp = icmp sle i32 %add, %y
|
|
ret i1 %cmp
|
|
}
|
|
|
|
; CHECK: @icmp_add20_sge_add57
|
|
; CHECK-NEXT: [[ADD:%[a-z0-9]+]] = add nsw i32 %y, 37
|
|
; CHECK-NEXT: icmp sle i32 [[ADD]], %x
|
|
define i1 @icmp_add20_sge_add57(i32 %x, i32 %y) {
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%1 = add nsw i32 %x, 20
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%2 = add nsw i32 %y, 57
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%cmp = icmp sge i32 %1, %2
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ret i1 %cmp
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}
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; CHECK: @icmp_sub57_sge_sub20
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; CHECK-NEXT: [[SUB:%[a-z0-9]+]] = add nsw i32 %x, -37
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; CHECK-NEXT: icmp sge i32 [[SUB]], %y
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define i1 @icmp_sub57_sge_sub20(i32 %x, i32 %y) {
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%1 = add nsw i32 %x, -57
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%2 = add nsw i32 %y, -20
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%cmp = icmp sge i32 %1, %2
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ret i1 %cmp
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}
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; CHECK: @icmp_and_shl_neg_ne_0
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; CHECK-NEXT: [[SHL:%[a-z0-9]+]] = shl i32 1, %B
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; CHECK-NEXT: [[AND:%[a-z0-9]+]] = and i32 [[SHL]], %A
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; CHECK-NEXT: [[CMP:%[a-z0-9]+]] = icmp eq i32 [[AND]], 0
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; CHECK-NEXT: ret i1 [[CMP]]
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define i1 @icmp_and_shl_neg_ne_0(i32 %A, i32 %B) {
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%neg = xor i32 %A, -1
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%shl = shl i32 1, %B
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%and = and i32 %shl, %neg
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%cmp = icmp ne i32 %and, 0
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ret i1 %cmp
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}
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; CHECK: @icmp_and_shl_neg_eq_0
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; CHECK-NEXT: [[SHL:%[a-z0-9]+]] = shl i32 1, %B
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; CHECK-NEXT: [[AND:%[a-z0-9]+]] = and i32 [[SHL]], %A
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; CHECK-NEXT: [[CMP:%[a-z0-9]+]] = icmp ne i32 [[AND]], 0
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; CHECK-NEXT: ret i1 [[CMP]]
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define i1 @icmp_and_shl_neg_eq_0(i32 %A, i32 %B) {
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|
%neg = xor i32 %A, -1
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|
%shl = shl i32 1, %B
|
|
%and = and i32 %shl, %neg
|
|
%cmp = icmp eq i32 %and, 0
|
|
ret i1 %cmp
|
|
}
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|
|
|
; CHECK: @icmp_add_and_shr_ne_0
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|
; CHECK-NEXT: [[AND:%[a-z0-9]+]] = and i32 %X, 240
|
|
; CHECK-NEXT: [[CMP:%[a-z0-9]+]] = icmp ne i32 [[AND]], 224
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|
; CHECK-NEXT: ret i1 [[CMP]]
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define i1 @icmp_add_and_shr_ne_0(i32 %X) {
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%shr = lshr i32 %X, 4
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%and = and i32 %shr, 15
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%add = add i32 %and, -14
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|
%tobool = icmp ne i32 %add, 0
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|
ret i1 %tobool
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}
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