mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-12-22 07:32:48 +00:00
b5a12dd12f
more than one use. Fixes PR10322. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134883 91177308-0d34-0410-b5e6-96231b3b80d8
475 lines
13 KiB
LLVM
475 lines
13 KiB
LLVM
; RUN: opt < %s -instcombine -S | FileCheck %s
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target datalayout = "e-p:64:64"
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%intstruct = type { i32 }
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%pair = type { i32, i32 }
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%struct.B = type { double }
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%struct.A = type { %struct.B, i32, i32 }
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@Global = constant [10 x i8] c"helloworld"
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; Test noop elimination
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define i32* @test1(i32* %I) {
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%A = getelementptr i32* %I, i64 0
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ret i32* %A
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; CHECK: @test1
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; CHECK: ret i32* %I
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}
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; Test noop elimination
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define i32* @test2(i32* %I) {
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%A = getelementptr i32* %I
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ret i32* %A
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; CHECK: @test2
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; CHECK: ret i32* %I
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}
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; Test that two array indexing geps fold
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define i32* @test3(i32* %I) {
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%A = getelementptr i32* %I, i64 17
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%B = getelementptr i32* %A, i64 4
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ret i32* %B
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; CHECK: @test3
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; CHECK: getelementptr i32* %I, i64 21
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}
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; Test that two getelementptr insts fold
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define i32* @test4({ i32 }* %I) {
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%A = getelementptr { i32 }* %I, i64 1
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%B = getelementptr { i32 }* %A, i64 0, i32 0
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ret i32* %B
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; CHECK: @test4
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; CHECK: getelementptr { i32 }* %I, i64 1, i32 0
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}
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define void @test5(i8 %B) {
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; This should be turned into a constexpr instead of being an instruction
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%A = getelementptr [10 x i8]* @Global, i64 0, i64 4
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store i8 %B, i8* %A
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ret void
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; CHECK: @test5
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; CHECK: store i8 %B, i8* getelementptr inbounds ([10 x i8]* @Global, i64 0, i64 4)
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}
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define i32* @test7(i32* %I, i64 %C, i64 %D) {
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%A = getelementptr i32* %I, i64 %C
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%B = getelementptr i32* %A, i64 %D
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ret i32* %B
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; CHECK: @test7
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; CHECK: %A.sum = add i64 %C, %D
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; CHECK: getelementptr i32* %I, i64 %A.sum
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}
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define i8* @test8([10 x i32]* %X) {
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;; Fold into the cast.
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%A = getelementptr [10 x i32]* %X, i64 0, i64 0
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%B = bitcast i32* %A to i8*
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ret i8* %B
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; CHECK: @test8
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; CHECK: bitcast [10 x i32]* %X to i8*
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}
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define i32 @test9() {
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%A = getelementptr { i32, double }* null, i32 0, i32 1
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%B = ptrtoint double* %A to i32
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ret i32 %B
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; CHECK: @test9
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; CHECK: ret i32 8
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}
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define i1 @test10({ i32, i32 }* %x, { i32, i32 }* %y) {
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%tmp.1 = getelementptr { i32, i32 }* %x, i32 0, i32 1
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%tmp.3 = getelementptr { i32, i32 }* %y, i32 0, i32 1
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;; seteq x, y
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%tmp.4 = icmp eq i32* %tmp.1, %tmp.3
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ret i1 %tmp.4
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; CHECK: @test10
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; CHECK: icmp eq { i32, i32 }* %x, %y
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}
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define i1 @test11({ i32, i32 }* %X) {
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%P = getelementptr { i32, i32 }* %X, i32 0, i32 0
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%Q = icmp eq i32* %P, null
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ret i1 %Q
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; CHECK: @test11
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; CHECK: icmp eq { i32, i32 }* %X, null
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}
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; PR4748
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define i32 @test12(%struct.A* %a) {
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entry:
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%g3 = getelementptr %struct.A* %a, i32 0, i32 1
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store i32 10, i32* %g3, align 4
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%g4 = getelementptr %struct.A* %a, i32 0, i32 0
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%new_a = bitcast %struct.B* %g4 to %struct.A*
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%g5 = getelementptr %struct.A* %new_a, i32 0, i32 1
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%a_a = load i32* %g5, align 4
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ret i32 %a_a
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; CHECK: @test12
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; CHECK: getelementptr %struct.A* %a, i64 0, i32 1
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; CHECK-NEXT: store i32 10, i32* %g3
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; CHECK-NEXT: ret i32 10
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}
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; PR2235
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%S = type { i32, [ 100 x i32] }
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define i1 @test13(i64 %X, %S* %P) {
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%A = getelementptr inbounds %S* %P, i32 0, i32 1, i64 %X
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%B = getelementptr inbounds %S* %P, i32 0, i32 0
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%C = icmp eq i32* %A, %B
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ret i1 %C
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; CHECK: @test13
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; CHECK: %C = icmp eq i64 %X, -1
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}
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@G = external global [3 x i8]
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define i8* @test14(i32 %Idx) {
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%idx = zext i32 %Idx to i64
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%tmp = getelementptr i8* getelementptr ([3 x i8]* @G, i32 0, i32 0), i64 %idx
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ret i8* %tmp
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; CHECK: @test14
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; CHECK: getelementptr [3 x i8]* @G, i64 0, i64 %idx
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}
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; Test folding of constantexpr geps into normal geps.
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@Array = external global [40 x i32]
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define i32 *@test15(i64 %X) {
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%A = getelementptr i32* getelementptr ([40 x i32]* @Array, i64 0, i64 0), i64 %X
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ret i32* %A
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; CHECK: @test15
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; CHECK: getelementptr [40 x i32]* @Array, i64 0, i64 %X
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}
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define i32* @test16(i32* %X, i32 %Idx) {
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%R = getelementptr i32* %X, i32 %Idx
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ret i32* %R
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; CHECK: @test16
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; CHECK: sext i32 %Idx to i64
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}
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define i1 @test17(i16* %P, i32 %I, i32 %J) {
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%X = getelementptr inbounds i16* %P, i32 %I
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%Y = getelementptr inbounds i16* %P, i32 %J
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%C = icmp ult i16* %X, %Y
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ret i1 %C
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; CHECK: @test17
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; CHECK: %C = icmp slt i32 %I, %J
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}
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define i1 @test18(i16* %P, i32 %I) {
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%X = getelementptr inbounds i16* %P, i32 %I
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%C = icmp ult i16* %X, %P
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ret i1 %C
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; CHECK: @test18
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; CHECK: %C = icmp slt i32 %I, 0
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}
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define i32 @test19(i32* %P, i32 %A, i32 %B) {
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%tmp.4 = getelementptr inbounds i32* %P, i32 %A
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%tmp.9 = getelementptr inbounds i32* %P, i32 %B
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%tmp.10 = icmp eq i32* %tmp.4, %tmp.9
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%tmp.11 = zext i1 %tmp.10 to i32
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ret i32 %tmp.11
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; CHECK: @test19
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; CHECK: icmp eq i32 %A, %B
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}
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define i32 @test20(i32* %P, i32 %A, i32 %B) {
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%tmp.4 = getelementptr inbounds i32* %P, i32 %A
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%tmp.6 = icmp eq i32* %tmp.4, %P
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%tmp.7 = zext i1 %tmp.6 to i32
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ret i32 %tmp.7
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; CHECK: @test20
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; CHECK: icmp eq i32 %A, 0
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}
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define i32 @test21() {
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%pbob1 = alloca %intstruct
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%pbob2 = getelementptr %intstruct* %pbob1
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%pbobel = getelementptr %intstruct* %pbob2, i64 0, i32 0
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%rval = load i32* %pbobel
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ret i32 %rval
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; CHECK: @test21
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; CHECK: getelementptr %intstruct* %pbob1, i64 0, i32 0
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}
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@A = global i32 1 ; <i32*> [#uses=1]
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@B = global i32 2 ; <i32*> [#uses=1]
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define i1 @test22() {
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%C = icmp ult i32* getelementptr (i32* @A, i64 1),
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getelementptr (i32* @B, i64 2)
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ret i1 %C
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; CHECK: @test22
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; CHECK: icmp ult (i32* getelementptr inbounds (i32* @A, i64 1), i32* getelementptr (i32* @B, i64 2))
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}
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%X = type { [10 x i32], float }
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define i1 @test23() {
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%A = getelementptr %X* null, i64 0, i32 0, i64 0 ; <i32*> [#uses=1]
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%B = icmp ne i32* %A, null ; <i1> [#uses=1]
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ret i1 %B
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; CHECK: @test23
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; CHECK: ret i1 false
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}
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define void @test25() {
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entry:
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%tmp = getelementptr { i64, i64, i64, i64 }* null, i32 0, i32 3 ; <i64*> [#uses=1]
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%tmp.upgrd.1 = load i64* %tmp ; <i64> [#uses=1]
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%tmp8.ui = load i64* null ; <i64> [#uses=1]
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%tmp8 = bitcast i64 %tmp8.ui to i64 ; <i64> [#uses=1]
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%tmp9 = and i64 %tmp8, %tmp.upgrd.1 ; <i64> [#uses=1]
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%sext = trunc i64 %tmp9 to i32 ; <i32> [#uses=1]
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%tmp27.i = sext i32 %sext to i64 ; <i64> [#uses=1]
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tail call void @foo25( i32 0, i64 %tmp27.i )
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unreachable
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; CHECK: @test25
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}
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declare void @foo25(i32, i64)
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; PR1637
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define i1 @test26(i8* %arr) {
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%X = getelementptr i8* %arr, i32 1
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%Y = getelementptr i8* %arr, i32 1
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%test = icmp uge i8* %X, %Y
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ret i1 %test
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; CHECK: @test26
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; CHECK: ret i1 true
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}
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%struct.__large_struct = type { [100 x i64] }
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%struct.compat_siginfo = type { i32, i32, i32, { [29 x i32] } }
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%struct.siginfo_t = type { i32, i32, i32, { { i32, i32, [0 x i8], %struct.sigval_t, i32 }, [88 x i8] } }
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%struct.sigval_t = type { i8* }
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define i32 @test27(%struct.compat_siginfo* %to, %struct.siginfo_t* %from) {
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entry:
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%from_addr = alloca %struct.siginfo_t*
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%tmp344 = load %struct.siginfo_t** %from_addr, align 8
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%tmp345 = getelementptr %struct.siginfo_t* %tmp344, i32 0, i32 3
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%tmp346 = getelementptr { { i32, i32, [0 x i8], %struct.sigval_t, i32 }, [88 x i8] }* %tmp345, i32 0, i32 0
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%tmp346347 = bitcast { i32, i32, [0 x i8], %struct.sigval_t, i32 }* %tmp346 to { i32, i32, %struct.sigval_t }*
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%tmp348 = getelementptr { i32, i32, %struct.sigval_t }* %tmp346347, i32 0, i32 2
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%tmp349 = getelementptr %struct.sigval_t* %tmp348, i32 0, i32 0
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%tmp349350 = bitcast i8** %tmp349 to i32*
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%tmp351 = load i32* %tmp349350, align 8
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%tmp360 = call i32 asm sideeffect "...",
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"=r,ir,*m,i,0,~{dirflag},~{fpsr},~{flags}"( i32 %tmp351,
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%struct.__large_struct* null, i32 -14, i32 0 )
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unreachable
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; CHECK: @test27
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}
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; PR1978
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%struct.x = type <{ i8 }>
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@.str = internal constant [6 x i8] c"Main!\00"
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@.str1 = internal constant [12 x i8] c"destroy %p\0A\00"
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define i32 @test28() nounwind {
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entry:
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%orientations = alloca [1 x [1 x %struct.x]]
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%tmp3 = call i32 @puts( i8* getelementptr ([6 x i8]* @.str, i32 0, i32 0) ) nounwind
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%tmp45 = getelementptr inbounds [1 x [1 x %struct.x]]* %orientations, i32 1, i32 0, i32 0
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%orientations62 = getelementptr [1 x [1 x %struct.x]]* %orientations, i32 0, i32 0, i32 0
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br label %bb10
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bb10:
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%indvar = phi i32 [ 0, %entry ], [ %indvar.next, %bb10 ]
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%tmp.0.reg2mem.0.rec = mul i32 %indvar, -1
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%tmp12.rec = add i32 %tmp.0.reg2mem.0.rec, -1
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%tmp12 = getelementptr inbounds %struct.x* %tmp45, i32 %tmp12.rec
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%tmp16 = call i32 (i8*, ...)* @printf( i8* getelementptr ([12 x i8]* @.str1, i32 0, i32 0), %struct.x* %tmp12 ) nounwind
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%tmp84 = icmp eq %struct.x* %tmp12, %orientations62
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%indvar.next = add i32 %indvar, 1
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br i1 %tmp84, label %bb17, label %bb10
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bb17:
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ret i32 0
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; CHECK: @test28
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; CHECK: icmp eq i32 %indvar, 0
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}
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declare i32 @puts(i8*)
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declare i32 @printf(i8*, ...)
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; rdar://6762290
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%T = type <{ i64, i64, i64 }>
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define i32 @test29(i8* %start, i32 %X) nounwind {
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entry:
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%tmp3 = load i64* null
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%add.ptr = getelementptr i8* %start, i64 %tmp3
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%tmp158 = load i32* null
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%add.ptr159 = getelementptr %T* null, i32 %tmp158
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%add.ptr209 = getelementptr i8* %start, i64 0
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%add.ptr212 = getelementptr i8* %add.ptr209, i32 %X
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%cmp214 = icmp ugt i8* %add.ptr212, %add.ptr
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br i1 %cmp214, label %if.then216, label %if.end363
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if.then216:
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ret i32 1
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if.end363:
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ret i32 0
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; CHECK: @test29
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}
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; PR3694
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define i32 @test30(i32 %m, i32 %n) nounwind {
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entry:
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%0 = alloca i32, i32 %n, align 4
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%1 = bitcast i32* %0 to [0 x i32]*
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call void @test30f(i32* %0) nounwind
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%2 = getelementptr [0 x i32]* %1, i32 0, i32 %m
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%3 = load i32* %2, align 4
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ret i32 %3
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; CHECK: @test30
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; CHECK: getelementptr i32
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}
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declare void @test30f(i32*)
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define i1 @test31(i32* %A) {
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%B = getelementptr i32* %A, i32 1
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%C = getelementptr i32* %A, i64 1
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%V = icmp eq i32* %B, %C
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ret i1 %V
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; CHECK: @test31
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; CHECK: ret i1 true
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}
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; PR1345
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define i8* @test32(i8* %v) {
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%A = alloca [4 x i8*], align 16
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%B = getelementptr [4 x i8*]* %A, i32 0, i32 0
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store i8* null, i8** %B
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%C = bitcast [4 x i8*]* %A to { [16 x i8] }*
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%D = getelementptr { [16 x i8] }* %C, i32 0, i32 0, i32 8
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%E = bitcast i8* %D to i8**
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store i8* %v, i8** %E
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%F = getelementptr [4 x i8*]* %A, i32 0, i32 2
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%G = load i8** %F
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ret i8* %G
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; CHECK: @test32
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; CHECK: %D = getelementptr [4 x i8*]* %A, i64 0, i64 1
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; CHECK: %F = getelementptr [4 x i8*]* %A, i64 0, i64 2
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}
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; PR3290
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%struct.Key = type { { i32, i32 } }
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%struct.anon = type <{ i8, [3 x i8], i32 }>
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define i32 *@test33(%struct.Key *%A) {
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%B = bitcast %struct.Key* %A to %struct.anon*
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%C = getelementptr %struct.anon* %B, i32 0, i32 2
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ret i32 *%C
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; CHECK: @test33
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; CHECK: getelementptr %struct.Key* %A, i64 0, i32 0, i32 1
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}
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%T2 = type { i8*, i8 }
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define i8* @test34(i8* %Val, i64 %V) nounwind {
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entry:
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%A = alloca %T2, align 8
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%mrv_gep = bitcast %T2* %A to i64*
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%B = getelementptr %T2* %A, i64 0, i32 0
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store i64 %V, i64* %mrv_gep
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%C = load i8** %B, align 8
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ret i8* %C
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; CHECK: @test34
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; CHECK: %V.c = inttoptr i64 %V to i8*
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; CHECK: ret i8* %V.c
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}
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%t0 = type { i8*, [19 x i8] }
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%t1 = type { i8*, [0 x i8] }
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@array = external global [11 x i8]
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@s = external global %t0
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@"\01LC8" = external constant [17 x i8]
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; Instcombine should be able to fold this getelementptr.
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define i32 @test35() nounwind {
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call i32 (i8*, ...)* @printf(i8* getelementptr ([17 x i8]* @"\01LC8", i32 0, i32 0),
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i8* getelementptr (%t1* bitcast (%t0* @s to %t1*), i32 0, i32 1, i32 0)) nounwind
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ret i32 0
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; CHECK: @test35
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; CHECK: call i32 (i8*, ...)* @printf(i8* getelementptr inbounds ([17 x i8]* @"\01LC8", i64 0, i64 0), i8* getelementptr inbounds (%t0* @s, i64 0, i32 1, i64 0)) nounwind
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}
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; Instcombine should constant-fold the GEP so that indices that have
|
|
; static array extents are within bounds of those array extents.
|
|
; In the below, -1 is not in the range [0,11). After the transformation,
|
|
; the same address is computed, but 3 is in the range of [0,11).
|
|
|
|
define i8* @test36() nounwind {
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|
ret i8* getelementptr ([11 x i8]* @array, i32 0, i64 -1)
|
|
; CHECK: @test36
|
|
; CHECK: ret i8* getelementptr ([11 x i8]* @array, i64 1676976733973595601, i64 4)
|
|
}
|
|
|
|
; Instcombine shouldn't assume that gep(A,0,1) != gep(A,1,0).
|
|
@A37 = external constant [1 x i8]
|
|
define i1 @test37() nounwind {
|
|
; CHECK: @test37
|
|
; CHECK: ret i1 true
|
|
%t = icmp eq i8* getelementptr ([1 x i8]* @A37, i64 0, i64 1),
|
|
getelementptr ([1 x i8]* @A37, i64 1, i64 0)
|
|
ret i1 %t
|
|
}
|
|
|
|
; Test index promotion
|
|
define i32* @test38(i32* %I, i32 %n) {
|
|
%A = getelementptr i32* %I, i32 %n
|
|
ret i32* %A
|
|
; CHECK: @test38
|
|
; CHECK: = sext i32 %n to i64
|
|
; CHECK: %A = getelementptr i32* %I, i64 %
|
|
}
|
|
|
|
; Test that we don't duplicate work when the second gep is a "bitcast".
|
|
%pr10322_t = type { i8* }
|
|
declare void @pr10322_f2(%pr10322_t*)
|
|
declare void @pr10322_f3(i8**)
|
|
define void @pr10322_f1(%pr10322_t* %foo) {
|
|
entry:
|
|
%arrayidx8 = getelementptr inbounds %pr10322_t* %foo, i64 2
|
|
call void @pr10322_f2(%pr10322_t* %arrayidx8) nounwind
|
|
%tmp2 = getelementptr inbounds %pr10322_t* %arrayidx8, i64 0, i32 0
|
|
call void @pr10322_f3(i8** %tmp2) nounwind
|
|
ret void
|
|
|
|
; CHECK: @pr10322_f1
|
|
; CHECK: %tmp2 = getelementptr inbounds %pr10322_t* %arrayidx8, i64 0, i32 0
|
|
}
|