forked from OSchip/llvm-project
[DSE] Regenerate tests with update_test_checks.py (NFC)
Summary: In preparation for a future commit, this regenerates the test checks for test/Transforms/DeadStoreElimination/simple.ll test/Transforms/DeadStoreElimination/memintrinsics.ll llvm-svn: 329824
This commit is contained in:
Daniel Neilson
parent
2ad75f7410
commit
7e2e5c3c58
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@ -1,3 +1,4 @@
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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt -S -dse < %s | FileCheck %s
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declare void @llvm.memcpy.p0i8.p0i8.i8(i8* nocapture, i8* nocapture, i8, i1) nounwind
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@ -6,42 +7,42 @@ declare void @llvm.memset.p0i8.i8(i8* nocapture, i8, i8, i1) nounwind
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define void @test1() {
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; CHECK-LABEL: @test1(
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; CHECK-NEXT: ret void
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;
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%A = alloca i8
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%B = alloca i8
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store i8 0, i8* %A ;; Written to by memcpy
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; CHECK-NOT: store
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call void @llvm.memcpy.p0i8.p0i8.i8(i8* %A, i8* %B, i8 -1, i1 false)
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ret void
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; CHECK: ret void
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}
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define void @test2() {
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; CHECK-LABEL: @test2(
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; CHECK-NEXT: ret void
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;
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%A = alloca i8
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%B = alloca i8
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store i8 0, i8* %A ;; Written to by memmove
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; CHECK-NOT: store
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call void @llvm.memmove.p0i8.p0i8.i8(i8* %A, i8* %B, i8 -1, i1 false)
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ret void
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; CHECK: ret void
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}
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define void @test3() {
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; CHECK-LABEL: @test3(
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; CHECK-NEXT: ret void
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;
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%A = alloca i8
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%B = alloca i8
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store i8 0, i8* %A ;; Written to by memset
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; CHECK-NOT: store
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call void @llvm.memset.p0i8.i8(i8* %A, i8 0, i8 -1, i1 false)
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ret void
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; CHECK: ret void
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}
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@ -1,3 +1,4 @@
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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt < %s -basicaa -dse -S | FileCheck %s
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; RUN: opt < %s -aa-pipeline=basic-aa -passes=dse -S | FileCheck %s
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target datalayout = "E-p:64:64:64-a0:0:8-f32:32:32-f64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-v64:64:64-v128:128:128"
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@ -7,23 +8,27 @@ declare void @llvm.memcpy.p0i8.p0i8.i64(i8* nocapture, i8* nocapture, i64, i1) n
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declare void @llvm.init.trampoline(i8*, i8*, i8*)
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define void @test1(i32* %Q, i32* %P) {
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; CHECK-LABEL: @test1(
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; CHECK-NEXT: store i32 0, i32* [[P:%.*]]
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; CHECK-NEXT: ret void
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;
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%DEAD = load i32, i32* %Q
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store i32 %DEAD, i32* %P
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store i32 0, i32* %P
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ret void
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; CHECK-LABEL: @test1(
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; CHECK-NEXT: store i32 0, i32* %P
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; CHECK-NEXT: ret void
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}
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; PR8576 - Should delete store of 10 even though p/q are may aliases.
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define void @test2(i32 *%p, i32 *%q) {
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; CHECK-LABEL: @test2(
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; CHECK-NEXT: store i32 20, i32* [[Q:%.*]], align 4
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; CHECK-NEXT: store i32 30, i32* [[P:%.*]], align 4
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; CHECK-NEXT: ret void
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;
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store i32 10, i32* %p, align 4
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store i32 20, i32* %q, align 4
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store i32 30, i32* %p, align 4
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ret void
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; CHECK-LABEL: @test2(
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; CHECK-NEXT: store i32 20
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}
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@ -32,7 +37,12 @@ define void @test2(i32 *%p, i32 *%q) {
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define i32 @test3(i32* %g_addr) nounwind {
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; CHECK-LABEL: @test3(
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; CHECK: load i32, i32* %g_addr
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; CHECK-NEXT: [[G_VALUE:%.*]] = load i32, i32* [[G_ADDR:%.*]], align 4
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; CHECK-NEXT: store i32 -1, i32* @g, align 4
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; CHECK-NEXT: store i32 [[G_VALUE]], i32* [[G_ADDR]], align 4
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; CHECK-NEXT: [[TMP3:%.*]] = load i32, i32* @g, align 4
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; CHECK-NEXT: ret i32 [[TMP3]]
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;
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%g_value = load i32, i32* %g_addr, align 4
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store i32 -1, i32* @g, align 4
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store i32 %g_value, i32* %g_addr, align 4
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@ -42,48 +52,62 @@ define i32 @test3(i32* %g_addr) nounwind {
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define void @test4(i32* %Q) {
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; CHECK-LABEL: @test4(
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; CHECK-NEXT: [[A:%.*]] = load i32, i32* [[Q:%.*]]
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; CHECK-NEXT: store volatile i32 [[A]], i32* [[Q]]
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; CHECK-NEXT: ret void
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;
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%a = load i32, i32* %Q
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store volatile i32 %a, i32* %Q
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ret void
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; CHECK-LABEL: @test4(
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; CHECK-NEXT: load i32
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; CHECK-NEXT: store volatile
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; CHECK-NEXT: ret void
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}
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define void @test5(i32* %Q) {
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; CHECK-LABEL: @test5(
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; CHECK-NEXT: [[A:%.*]] = load volatile i32, i32* [[Q:%.*]]
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; CHECK-NEXT: ret void
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;
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%a = load volatile i32, i32* %Q
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store i32 %a, i32* %Q
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ret void
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; CHECK-LABEL: @test5(
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; CHECK-NEXT: load volatile
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; CHECK-NEXT: ret void
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}
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; Should delete store of 10 even though memset is a may-store to P (P and Q may
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; alias).
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define void @test6(i32 *%p, i8 *%q) {
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; CHECK-LABEL: @test6(
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; CHECK-NEXT: call void @llvm.memset.p0i8.i64(i8* [[Q:%.*]], i8 42, i64 900, i1 false)
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; CHECK-NEXT: store i32 30, i32* [[P:%.*]], align 4
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; CHECK-NEXT: ret void
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;
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store i32 10, i32* %p, align 4 ;; dead.
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call void @llvm.memset.p0i8.i64(i8* %q, i8 42, i64 900, i1 false)
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store i32 30, i32* %p, align 4
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ret void
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; CHECK-LABEL: @test6(
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; CHECK-NEXT: call void @llvm.memset
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}
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; Should delete store of 10 even though memcpy is a may-store to P (P and Q may
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; alias).
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define void @test7(i32 *%p, i8 *%q, i8* noalias %r) {
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; CHECK-LABEL: @test7(
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; CHECK-NEXT: call void @llvm.memcpy.p0i8.p0i8.i64(i8* [[Q:%.*]], i8* [[R:%.*]], i64 900, i1 false)
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; CHECK-NEXT: store i32 30, i32* [[P:%.*]], align 4
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; CHECK-NEXT: ret void
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;
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store i32 10, i32* %p, align 4 ;; dead.
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call void @llvm.memcpy.p0i8.p0i8.i64(i8* %q, i8* %r, i64 900, i1 false)
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store i32 30, i32* %p, align 4
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ret void
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; CHECK-LABEL: @test7(
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; CHECK-NEXT: call void @llvm.memcpy
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}
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; Do not delete stores that are only partially killed.
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define i32 @test8() {
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; CHECK-LABEL: @test8(
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; CHECK-NEXT: [[V:%.*]] = alloca i32
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; CHECK-NEXT: store i32 1234567, i32* [[V]]
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; CHECK-NEXT: [[X:%.*]] = load i32, i32* [[V]]
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; CHECK-NEXT: ret i32 [[X]]
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;
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%V = alloca i32
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store i32 1234567, i32* %V
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%V2 = bitcast i32* %V to i8*
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@ -91,38 +115,42 @@ define i32 @test8() {
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%X = load i32, i32* %V
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ret i32 %X
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; CHECK-LABEL: @test8(
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; CHECK: store i32 1234567
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}
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; Test for byval handling.
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%struct.x = type { i32, i32, i32, i32 }
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define void @test9(%struct.x* byval %a) nounwind {
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; CHECK-LABEL: @test9(
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; CHECK-NEXT: ret void
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;
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%tmp2 = getelementptr %struct.x, %struct.x* %a, i32 0, i32 0
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store i32 1, i32* %tmp2, align 4
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ret void
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; CHECK-LABEL: @test9(
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; CHECK-NEXT: ret void
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}
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; Test for inalloca handling.
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define void @test9_2(%struct.x* inalloca %a) nounwind {
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; CHECK-LABEL: @test9_2(
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; CHECK-NEXT: ret void
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;
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%tmp2 = getelementptr %struct.x, %struct.x* %a, i32 0, i32 0
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store i32 1, i32* %tmp2, align 4
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ret void
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; CHECK-LABEL: @test9_2(
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; CHECK-NEXT: ret void
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}
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; va_arg has fuzzy dependence, the store shouldn't be zapped.
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define double @test10(i8* %X) {
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; CHECK-LABEL: @test10(
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; CHECK-NEXT: [[X_ADDR:%.*]] = alloca i8*
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; CHECK-NEXT: store i8* [[X:%.*]], i8** [[X_ADDR]]
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; CHECK-NEXT: [[TMP_0:%.*]] = va_arg i8** [[X_ADDR]], double
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; CHECK-NEXT: ret double [[TMP_0]]
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;
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%X_addr = alloca i8*
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store i8* %X, i8** %X_addr
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%tmp.0 = va_arg i8** %X_addr, double
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ret double %tmp.0
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; CHECK-LABEL: @test10(
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; CHECK: store
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}
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@ -130,18 +158,24 @@ define double @test10(i8* %X) {
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declare void @test11f()
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define void @test11() {
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; CHECK-LABEL: @test11(
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; CHECK-NEXT: ret void
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;
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%storage = alloca [10 x i8], align 16 ; <[10 x i8]*> [#uses=1]
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; CHECK-NOT: alloca
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%cast = getelementptr [10 x i8], [10 x i8]* %storage, i32 0, i32 0 ; <i8*> [#uses=1]
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call void @llvm.init.trampoline( i8* %cast, i8* bitcast (void ()* @test11f to i8*), i8* null ) ; <i8*> [#uses=1]
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; CHECK-NOT: trampoline
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ret void
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; CHECK: ret void
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}
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; PR2599 - load -> store to same address.
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define void @test12({ i32, i32 }* %x) nounwind {
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; CHECK-LABEL: @test12(
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; CHECK-NEXT: [[TMP7:%.*]] = getelementptr { i32, i32 }, { i32, i32 }* [[X:%.*]], i32 0, i32 1
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; CHECK-NEXT: [[TMP8:%.*]] = load i32, i32* [[TMP7]], align 4
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; CHECK-NEXT: [[TMP17:%.*]] = sub i32 0, [[TMP8]]
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; CHECK-NEXT: store i32 [[TMP17]], i32* [[TMP7]], align 4
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; CHECK-NEXT: ret void
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;
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%tmp4 = getelementptr { i32, i32 }, { i32, i32 }* %x, i32 0, i32 0
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%tmp5 = load i32, i32* %tmp4, align 4
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%tmp7 = getelementptr { i32, i32 }, { i32, i32 }* %x, i32 0, i32 1
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@ -150,30 +184,38 @@ define void @test12({ i32, i32 }* %x) nounwind {
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store i32 %tmp5, i32* %tmp4, align 4
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store i32 %tmp17, i32* %tmp7, align 4
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ret void
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; CHECK-LABEL: @test12(
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; CHECK-NOT: tmp5
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; CHECK: ret void
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}
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; %P doesn't escape, the DEAD instructions should be removed.
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declare void @test13f()
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define i32* @test13() {
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%p = tail call i8* @malloc(i32 4)
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%P = bitcast i8* %p to i32*
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; CHECK-LABEL: @test13(
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; CHECK-NEXT: [[PTR:%.*]] = tail call i8* @malloc(i32 4)
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; CHECK-NEXT: [[P:%.*]] = bitcast i8* [[PTR]] to i32*
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; CHECK-NEXT: call void @test13f()
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; CHECK-NEXT: store i32 0, i32* [[P]]
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; CHECK-NEXT: ret i32* [[P]]
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;
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%ptr = tail call i8* @malloc(i32 4)
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%P = bitcast i8* %ptr to i32*
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%DEAD = load i32, i32* %P
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%DEAD2 = add i32 %DEAD, 1
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store i32 %DEAD2, i32* %P
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call void @test13f( )
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store i32 0, i32* %P
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ret i32* %P
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; CHECK: @test13()
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; CHECK-NEXT: malloc
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; CHECK-NEXT: bitcast
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; CHECK-NEXT: call void
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}
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define i32 addrspace(1)* @test13_addrspacecast() {
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; CHECK-LABEL: @test13_addrspacecast(
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; CHECK-NEXT: [[P:%.*]] = tail call i8* @malloc(i32 4)
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; CHECK-NEXT: [[P_BC:%.*]] = bitcast i8* [[P]] to i32*
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; CHECK-NEXT: [[P:%.*]] = addrspacecast i32* [[P_BC]] to i32 addrspace(1)*
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; CHECK-NEXT: call void @test13f()
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; CHECK-NEXT: store i32 0, i32 addrspace(1)* [[P]]
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; CHECK-NEXT: ret i32 addrspace(1)* [[P]]
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;
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%p = tail call i8* @malloc(i32 4)
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%p.bc = bitcast i8* %p to i32*
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%P = addrspacecast i32* %p.bc to i32 addrspace(1)*
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@ -183,11 +225,6 @@ define i32 addrspace(1)* @test13_addrspacecast() {
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call void @test13f( )
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store i32 0, i32 addrspace(1)* %P
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ret i32 addrspace(1)* %P
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; CHECK: @test13_addrspacecast()
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; CHECK-NEXT: malloc
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; CHECK-NEXT: bitcast
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; CHECK-NEXT: addrspacecast
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; CHECK-NEXT: call void
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}
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declare noalias i8* @malloc(i32)
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@ -195,13 +232,14 @@ declare noalias i8* @calloc(i32, i32)
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define void @test14(i32* %Q) {
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; CHECK-LABEL: @test14(
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; CHECK-NEXT: ret void
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;
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%P = alloca i32
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%DEAD = load i32, i32* %Q
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store i32 %DEAD, i32* %P
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ret void
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; CHECK-LABEL: @test14(
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; CHECK-NEXT: ret void
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}
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@ -209,43 +247,47 @@ define void @test14(i32* %Q) {
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;; Fully dead overwrite of memcpy.
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define void @test15(i8* %P, i8* %Q) nounwind ssp {
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; CHECK-LABEL: @test15(
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; CHECK-NEXT: tail call void @llvm.memcpy.p0i8.p0i8.i64(i8* [[P:%.*]], i8* [[Q:%.*]], i64 12, i1 false)
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; CHECK-NEXT: ret void
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;
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tail call void @llvm.memcpy.p0i8.p0i8.i64(i8* %P, i8* %Q, i64 12, i1 false)
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tail call void @llvm.memcpy.p0i8.p0i8.i64(i8* %P, i8* %Q, i64 12, i1 false)
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ret void
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; CHECK-LABEL: @test15(
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; CHECK-NEXT: call void @llvm.memcpy
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; CHECK-NEXT: ret
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}
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;; Full overwrite of smaller memcpy.
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define void @test16(i8* %P, i8* %Q) nounwind ssp {
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; CHECK-LABEL: @test16(
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; CHECK-NEXT: tail call void @llvm.memcpy.p0i8.p0i8.i64(i8* [[P:%.*]], i8* [[Q:%.*]], i64 12, i1 false)
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; CHECK-NEXT: ret void
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;
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tail call void @llvm.memcpy.p0i8.p0i8.i64(i8* %P, i8* %Q, i64 8, i1 false)
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tail call void @llvm.memcpy.p0i8.p0i8.i64(i8* %P, i8* %Q, i64 12, i1 false)
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ret void
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; CHECK-LABEL: @test16(
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; CHECK-NEXT: call void @llvm.memcpy
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; CHECK-NEXT: ret
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}
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;; Overwrite of memset by memcpy.
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define void @test17(i8* %P, i8* noalias %Q) nounwind ssp {
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; CHECK-LABEL: @test17(
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; CHECK-NEXT: tail call void @llvm.memcpy.p0i8.p0i8.i64(i8* [[P:%.*]], i8* [[Q:%.*]], i64 12, i1 false)
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; CHECK-NEXT: ret void
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;
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tail call void @llvm.memset.p0i8.i64(i8* %P, i8 42, i64 8, i1 false)
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tail call void @llvm.memcpy.p0i8.p0i8.i64(i8* %P, i8* %Q, i64 12, i1 false)
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ret void
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; CHECK-LABEL: @test17(
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; CHECK-NEXT: call void @llvm.memcpy
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; CHECK-NEXT: ret
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}
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; Should not delete the volatile memset.
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define void @test17v(i8* %P, i8* %Q) nounwind ssp {
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; CHECK-LABEL: @test17v(
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; CHECK-NEXT: tail call void @llvm.memset.p0i8.i64(i8* [[P:%.*]], i8 42, i64 8, i1 true)
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; CHECK-NEXT: tail call void @llvm.memcpy.p0i8.p0i8.i64(i8* [[P]], i8* [[Q:%.*]], i64 12, i1 false)
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; CHECK-NEXT: ret void
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;
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tail call void @llvm.memset.p0i8.i64(i8* %P, i8 42, i64 8, i1 true)
|
||||
tail call void @llvm.memcpy.p0i8.p0i8.i64(i8* %P, i8* %Q, i64 12, i1 false)
|
||||
ret void
|
||||
; CHECK-LABEL: @test17v(
|
||||
; CHECK-NEXT: call void @llvm.memset
|
||||
; CHECK-NEXT: call void @llvm.memcpy
|
||||
; CHECK-NEXT: ret
|
||||
}
|
||||
|
||||
; PR8728
|
||||
|
|
@ -256,13 +298,14 @@ define void @test17v(i8* %P, i8* %Q) nounwind ssp {
|
|||
; NB! See PR11763 - currently LLVM allows memcpy's source and destination to be
|
||||
; equal (but not inequal and overlapping).
|
||||
define void @test18(i8* %P, i8* %Q, i8* %R) nounwind ssp {
|
||||
; CHECK-LABEL: @test18(
|
||||
; CHECK-NEXT: tail call void @llvm.memcpy.p0i8.p0i8.i64(i8* [[P:%.*]], i8* [[Q:%.*]], i64 12, i1 false)
|
||||
; CHECK-NEXT: tail call void @llvm.memcpy.p0i8.p0i8.i64(i8* [[P]], i8* [[R:%.*]], i64 12, i1 false)
|
||||
; CHECK-NEXT: ret void
|
||||
;
|
||||
tail call void @llvm.memcpy.p0i8.p0i8.i64(i8* %P, i8* %Q, i64 12, i1 false)
|
||||
tail call void @llvm.memcpy.p0i8.p0i8.i64(i8* %P, i8* %R, i64 12, i1 false)
|
||||
ret void
|
||||
; CHECK-LABEL: @test18(
|
||||
; CHECK-NEXT: call void @llvm.memcpy
|
||||
; CHECK-NEXT: call void @llvm.memcpy
|
||||
; CHECK-NEXT: ret
|
||||
}
|
||||
|
||||
|
||||
|
|
@ -270,49 +313,62 @@ define void @test18(i8* %P, i8* %Q, i8* %R) nounwind ssp {
|
|||
declare void @test19f({i32}* byval align 4 %P)
|
||||
|
||||
define void @test19({i32} * nocapture byval align 4 %arg5) nounwind ssp {
|
||||
; CHECK-LABEL: @test19(
|
||||
; CHECK-NEXT: bb:
|
||||
; CHECK-NEXT: [[TMP7:%.*]] = getelementptr inbounds { i32 }, { i32 }* [[ARG5:%.*]], i32 0, i32 0
|
||||
; CHECK-NEXT: store i32 912, i32* [[TMP7]]
|
||||
; CHECK-NEXT: call void @test19f({ i32 }* byval align 4 [[ARG5]])
|
||||
; CHECK-NEXT: ret void
|
||||
;
|
||||
bb:
|
||||
%tmp7 = getelementptr inbounds {i32}, {i32}* %arg5, i32 0, i32 0
|
||||
store i32 912, i32* %tmp7
|
||||
call void @test19f({i32}* byval align 4 %arg5)
|
||||
ret void
|
||||
|
||||
; CHECK-LABEL: @test19(
|
||||
; CHECK: store i32 912
|
||||
; CHECK: call void @test19f
|
||||
}
|
||||
|
||||
define void @test20() {
|
||||
; CHECK-LABEL: @test20(
|
||||
; CHECK-NEXT: ret void
|
||||
;
|
||||
%m = call i8* @malloc(i32 24)
|
||||
store i8 0, i8* %m
|
||||
ret void
|
||||
}
|
||||
; CHECK-LABEL: @test20(
|
||||
; CHECK-NEXT: ret void
|
||||
|
||||
; CHECK-LABEL: @test21(
|
||||
define void @test21() {
|
||||
; CHECK-LABEL: @test21(
|
||||
; CHECK-NEXT: ret void
|
||||
;
|
||||
%m = call i8* @calloc(i32 9, i32 7)
|
||||
store i8 0, i8* %m
|
||||
; CHECK-NEXT: ret void
|
||||
ret void
|
||||
}
|
||||
|
||||
; CHECK-LABEL: @test22(
|
||||
define void @test22(i1 %i, i32 %k, i32 %m) nounwind {
|
||||
; CHECK-LABEL: @test22(
|
||||
; CHECK-NEXT: ret void
|
||||
;
|
||||
%k.addr = alloca i32
|
||||
%m.addr = alloca i32
|
||||
%k.addr.m.addr = select i1 %i, i32* %k.addr, i32* %m.addr
|
||||
store i32 0, i32* %k.addr.m.addr, align 4
|
||||
; CHECK-NEXT: ret void
|
||||
ret void
|
||||
}
|
||||
|
||||
; PR13547
|
||||
; CHECK-LABEL: @test23(
|
||||
; CHECK: store i8 97
|
||||
; CHECK: store i8 0
|
||||
declare noalias i8* @strdup(i8* nocapture) nounwind
|
||||
define noalias i8* @test23() nounwind uwtable ssp {
|
||||
; CHECK-LABEL: @test23(
|
||||
; CHECK-NEXT: [[X:%.*]] = alloca [2 x i8], align 1
|
||||
; CHECK-NEXT: [[ARRAYIDX:%.*]] = getelementptr inbounds [2 x i8], [2 x i8]* [[X]], i64 0, i64 0
|
||||
; CHECK-NEXT: store i8 97, i8* [[ARRAYIDX]], align 1
|
||||
; CHECK-NEXT: [[ARRAYIDX1:%.*]] = getelementptr inbounds [2 x i8], [2 x i8]* [[X]], i64 0, i64 1
|
||||
; CHECK-NEXT: store i8 0, i8* [[ARRAYIDX1]], align 1
|
||||
; CHECK-NEXT: [[CALL:%.*]] = call i8* @strdup(i8* [[ARRAYIDX]]) #1
|
||||
; CHECK-NEXT: ret i8* [[CALL]]
|
||||
;
|
||||
%x = alloca [2 x i8], align 1
|
||||
%arrayidx = getelementptr inbounds [2 x i8], [2 x i8]* %x, i64 0, i64 0
|
||||
store i8 97, i8* %arrayidx, align 1
|
||||
|
|
@ -323,13 +379,14 @@ define noalias i8* @test23() nounwind uwtable ssp {
|
|||
}
|
||||
|
||||
; Make sure same sized store to later element is deleted
|
||||
; CHECK-LABEL: @test24(
|
||||
; CHECK-NOT: store i32 0
|
||||
; CHECK-NOT: store i32 0
|
||||
; CHECK: store i32 %b
|
||||
; CHECK: store i32 %c
|
||||
; CHECK: ret void
|
||||
define void @test24([2 x i32]* %a, i32 %b, i32 %c) nounwind {
|
||||
; CHECK-LABEL: @test24(
|
||||
; CHECK-NEXT: [[TMP1:%.*]] = getelementptr inbounds [2 x i32], [2 x i32]* [[A:%.*]], i64 0, i64 0
|
||||
; CHECK-NEXT: store i32 [[B:%.*]], i32* [[TMP1]], align 4
|
||||
; CHECK-NEXT: [[TMP2:%.*]] = getelementptr inbounds [2 x i32], [2 x i32]* [[A]], i64 0, i64 1
|
||||
; CHECK-NEXT: store i32 [[C:%.*]], i32* [[TMP2]], align 4
|
||||
; CHECK-NEXT: ret void
|
||||
;
|
||||
%1 = getelementptr inbounds [2 x i32], [2 x i32]* %a, i64 0, i64 0
|
||||
store i32 0, i32* %1, align 4
|
||||
%2 = getelementptr inbounds [2 x i32], [2 x i32]* %a, i64 0, i64 1
|
||||
|
|
@ -342,11 +399,15 @@ define void @test24([2 x i32]* %a, i32 %b, i32 %c) nounwind {
|
|||
}
|
||||
|
||||
; Check another case like PR13547 where strdup is not like malloc.
|
||||
; CHECK-LABEL: @test25(
|
||||
; CHECK: load i8
|
||||
; CHECK: store i8 0
|
||||
; CHECK: store i8 %tmp
|
||||
define i8* @test25(i8* %p) nounwind {
|
||||
; CHECK-LABEL: @test25(
|
||||
; CHECK-NEXT: [[P_4:%.*]] = getelementptr i8, i8* [[P:%.*]], i64 4
|
||||
; CHECK-NEXT: [[TMP:%.*]] = load i8, i8* [[P_4]], align 1
|
||||
; CHECK-NEXT: store i8 0, i8* [[P_4]], align 1
|
||||
; CHECK-NEXT: [[Q:%.*]] = call i8* @strdup(i8* [[P]]) #4
|
||||
; CHECK-NEXT: store i8 [[TMP]], i8* [[P_4]], align 1
|
||||
; CHECK-NEXT: ret i8* [[Q]]
|
||||
;
|
||||
%p.4 = getelementptr i8, i8* %p, i64 4
|
||||
%tmp = load i8, i8* %p.4, align 1
|
||||
store i8 0, i8* %p.4, align 1
|
||||
|
|
@ -356,10 +417,17 @@ define i8* @test25(i8* %p) nounwind {
|
|||
}
|
||||
|
||||
; Remove redundant store if loaded value is in another block.
|
||||
; CHECK-LABEL: @test26(
|
||||
; CHECK-NOT: store
|
||||
; CHECK: ret
|
||||
define i32 @test26(i1 %c, i32* %p) {
|
||||
; CHECK-LABEL: @test26(
|
||||
; CHECK-NEXT: entry:
|
||||
; CHECK-NEXT: br i1 [[C:%.*]], label [[BB1:%.*]], label [[BB2:%.*]]
|
||||
; CHECK: bb1:
|
||||
; CHECK-NEXT: br label [[BB3:%.*]]
|
||||
; CHECK: bb2:
|
||||
; CHECK-NEXT: br label [[BB3]]
|
||||
; CHECK: bb3:
|
||||
; CHECK-NEXT: ret i32 0
|
||||
;
|
||||
entry:
|
||||
%v = load i32, i32* %p, align 4
|
||||
br i1 %c, label %bb1, label %bb2
|
||||
|
|
@ -373,10 +441,17 @@ bb3:
|
|||
}
|
||||
|
||||
; Remove redundant store if loaded value is in another block.
|
||||
; CHECK-LABEL: @test27(
|
||||
; CHECK-NOT: store
|
||||
; CHECK: ret
|
||||
define i32 @test27(i1 %c, i32* %p) {
|
||||
; CHECK-LABEL: @test27(
|
||||
; CHECK-NEXT: entry:
|
||||
; CHECK-NEXT: br i1 [[C:%.*]], label [[BB1:%.*]], label [[BB2:%.*]]
|
||||
; CHECK: bb1:
|
||||
; CHECK-NEXT: br label [[BB3:%.*]]
|
||||
; CHECK: bb2:
|
||||
; CHECK-NEXT: br label [[BB3]]
|
||||
; CHECK: bb3:
|
||||
; CHECK-NEXT: ret i32 0
|
||||
;
|
||||
entry:
|
||||
%v = load i32, i32* %p, align 4
|
||||
br i1 %c, label %bb1, label %bb2
|
||||
|
|
@ -390,10 +465,20 @@ bb3:
|
|||
}
|
||||
|
||||
; Don't remove redundant store because of may-aliased store.
|
||||
; CHECK-LABEL: @test28(
|
||||
; CHECK: bb3:
|
||||
; CHECK-NEXT: store i32 %v
|
||||
define i32 @test28(i1 %c, i32* %p, i32* %p2, i32 %i) {
|
||||
; CHECK-LABEL: @test28(
|
||||
; CHECK-NEXT: entry:
|
||||
; CHECK-NEXT: [[V:%.*]] = load i32, i32* [[P:%.*]], align 4
|
||||
; CHECK-NEXT: store i32 [[I:%.*]], i32* [[P2:%.*]], align 4
|
||||
; CHECK-NEXT: br i1 [[C:%.*]], label [[BB1:%.*]], label [[BB2:%.*]]
|
||||
; CHECK: bb1:
|
||||
; CHECK-NEXT: br label [[BB3:%.*]]
|
||||
; CHECK: bb2:
|
||||
; CHECK-NEXT: br label [[BB3]]
|
||||
; CHECK: bb3:
|
||||
; CHECK-NEXT: store i32 [[V]], i32* [[P]], align 4
|
||||
; CHECK-NEXT: ret i32 0
|
||||
;
|
||||
entry:
|
||||
%v = load i32, i32* %p, align 4
|
||||
|
||||
|
|
@ -410,10 +495,20 @@ bb3:
|
|||
}
|
||||
|
||||
; Don't remove redundant store because of may-aliased store.
|
||||
; CHECK-LABEL: @test29(
|
||||
; CHECK: bb3:
|
||||
; CHECK-NEXT: store i32 %v
|
||||
define i32 @test29(i1 %c, i32* %p, i32* %p2, i32 %i) {
|
||||
; CHECK-LABEL: @test29(
|
||||
; CHECK-NEXT: entry:
|
||||
; CHECK-NEXT: [[V:%.*]] = load i32, i32* [[P:%.*]], align 4
|
||||
; CHECK-NEXT: br i1 [[C:%.*]], label [[BB1:%.*]], label [[BB2:%.*]]
|
||||
; CHECK: bb1:
|
||||
; CHECK-NEXT: br label [[BB3:%.*]]
|
||||
; CHECK: bb2:
|
||||
; CHECK-NEXT: store i32 [[I:%.*]], i32* [[P2:%.*]], align 4
|
||||
; CHECK-NEXT: br label [[BB3]]
|
||||
; CHECK: bb3:
|
||||
; CHECK-NEXT: store i32 [[V]], i32* [[P]], align 4
|
||||
; CHECK-NEXT: ret i32 0
|
||||
;
|
||||
entry:
|
||||
%v = load i32, i32* %p, align 4
|
||||
br i1 %c, label %bb1, label %bb2
|
||||
|
|
@ -431,10 +526,20 @@ bb3:
|
|||
declare void @unknown_func()
|
||||
|
||||
; Don't remove redundant store because of unknown call.
|
||||
; CHECK-LABEL: @test30(
|
||||
; CHECK: bb3:
|
||||
; CHECK-NEXT: store i32 %v
|
||||
define i32 @test30(i1 %c, i32* %p, i32 %i) {
|
||||
; CHECK-LABEL: @test30(
|
||||
; CHECK-NEXT: entry:
|
||||
; CHECK-NEXT: [[V:%.*]] = load i32, i32* [[P:%.*]], align 4
|
||||
; CHECK-NEXT: br i1 [[C:%.*]], label [[BB1:%.*]], label [[BB2:%.*]]
|
||||
; CHECK: bb1:
|
||||
; CHECK-NEXT: br label [[BB3:%.*]]
|
||||
; CHECK: bb2:
|
||||
; CHECK-NEXT: call void @unknown_func()
|
||||
; CHECK-NEXT: br label [[BB3]]
|
||||
; CHECK: bb3:
|
||||
; CHECK-NEXT: store i32 [[V]], i32* [[P]], align 4
|
||||
; CHECK-NEXT: ret i32 0
|
||||
;
|
||||
entry:
|
||||
%v = load i32, i32* %p, align 4
|
||||
br i1 %c, label %bb1, label %bb2
|
||||
|
|
@ -450,10 +555,15 @@ bb3:
|
|||
}
|
||||
|
||||
; Remove redundant store if loaded value is in another block inside a loop.
|
||||
; CHECK-LABEL: @test31(
|
||||
; CHECK-NOT: store
|
||||
; CHECK: ret
|
||||
define i32 @test31(i1 %c, i32* %p, i32 %i) {
|
||||
; CHECK-LABEL: @test31(
|
||||
; CHECK-NEXT: entry:
|
||||
; CHECK-NEXT: br label [[BB1:%.*]]
|
||||
; CHECK: bb1:
|
||||
; CHECK-NEXT: br i1 undef, label [[BB1]], label [[BB2:%.*]]
|
||||
; CHECK: bb2:
|
||||
; CHECK-NEXT: ret i32 0
|
||||
;
|
||||
entry:
|
||||
%v = load i32, i32* %p, align 4
|
||||
br label %bb1
|
||||
|
|
@ -465,11 +575,18 @@ bb2:
|
|||
}
|
||||
|
||||
; Don't remove redundant store in a loop with a may-alias store.
|
||||
; CHECK-LABEL: @test32(
|
||||
; CHECK: bb1:
|
||||
; CHECK-NEXT: store i32 %v
|
||||
; CHECK-NEXT: call void @unknown_func
|
||||
define i32 @test32(i1 %c, i32* %p, i32 %i) {
|
||||
; CHECK-LABEL: @test32(
|
||||
; CHECK-NEXT: entry:
|
||||
; CHECK-NEXT: [[V:%.*]] = load i32, i32* [[P:%.*]], align 4
|
||||
; CHECK-NEXT: br label [[BB1:%.*]]
|
||||
; CHECK: bb1:
|
||||
; CHECK-NEXT: store i32 [[V]], i32* [[P]], align 4
|
||||
; CHECK-NEXT: call void @unknown_func()
|
||||
; CHECK-NEXT: br i1 undef, label [[BB1]], label [[BB2:%.*]]
|
||||
; CHECK: bb2:
|
||||
; CHECK-NEXT: ret i32 0
|
||||
;
|
||||
entry:
|
||||
%v = load i32, i32* %p, align 4
|
||||
br label %bb1
|
||||
|
|
@ -483,10 +600,18 @@ bb2:
|
|||
}
|
||||
|
||||
; Remove redundant store, which is in the lame loop as the load.
|
||||
; CHECK-LABEL: @test33(
|
||||
; CHECK-NOT: store
|
||||
; CHECK: ret
|
||||
define i32 @test33(i1 %c, i32* %p, i32 %i) {
|
||||
; CHECK-LABEL: @test33(
|
||||
; CHECK-NEXT: entry:
|
||||
; CHECK-NEXT: br label [[BB1:%.*]]
|
||||
; CHECK: bb1:
|
||||
; CHECK-NEXT: br label [[BB2:%.*]]
|
||||
; CHECK: bb2:
|
||||
; CHECK-NEXT: call void @unknown_func()
|
||||
; CHECK-NEXT: br i1 undef, label [[BB1]], label [[BB3:%.*]]
|
||||
; CHECK: bb3:
|
||||
; CHECK-NEXT: ret i32 0
|
||||
;
|
||||
entry:
|
||||
br label %bb1
|
||||
bb1:
|
||||
|
|
@ -502,11 +627,13 @@ bb3:
|
|||
}
|
||||
|
||||
; Don't remove redundant store: unknown_func could unwind
|
||||
; CHECK-LABEL: @test34(
|
||||
; CHECK: store i32 1
|
||||
; CHECK: store i32 0
|
||||
; CHECK: ret
|
||||
define void @test34(i32* noalias %p) {
|
||||
; CHECK-LABEL: @test34(
|
||||
; CHECK-NEXT: store i32 1, i32* [[P:%.*]]
|
||||
; CHECK-NEXT: call void @unknown_func()
|
||||
; CHECK-NEXT: store i32 0, i32* [[P]]
|
||||
; CHECK-NEXT: ret void
|
||||
;
|
||||
store i32 1, i32* %p
|
||||
call void @unknown_func()
|
||||
store i32 0, i32* %p
|
||||
|
|
@ -514,11 +641,12 @@ define void @test34(i32* noalias %p) {
|
|||
}
|
||||
|
||||
; Remove redundant store even with an unwinding function in the same block
|
||||
; CHECK-LABEL: @test35(
|
||||
; CHECK: call void @unknown_func
|
||||
; CHECK-NEXT: store i32 0
|
||||
; CHECK-NEXT: ret void
|
||||
define void @test35(i32* noalias %p) {
|
||||
; CHECK-LABEL: @test35(
|
||||
; CHECK-NEXT: call void @unknown_func()
|
||||
; CHECK-NEXT: store i32 0, i32* [[P:%.*]]
|
||||
; CHECK-NEXT: ret void
|
||||
;
|
||||
call void @unknown_func()
|
||||
store i32 1, i32* %p
|
||||
store i32 0, i32* %p
|
||||
|
|
@ -528,9 +656,10 @@ define void @test35(i32* noalias %p) {
|
|||
; We cannot optimize away the first memmove since %P could overlap with %Q.
|
||||
define void @test36(i8* %P, i8* %Q) {
|
||||
; CHECK-LABEL: @test36(
|
||||
; CHECK-NEXT: tail call void @llvm.memmove.p0i8.p0i8.i64(i8* %P, i8* %Q, i64 12, i1 false)
|
||||
; CHECK-NEXT: tail call void @llvm.memmove.p0i8.p0i8.i64(i8* %P, i8* %Q, i64 12, i1 false)
|
||||
; CHECK-NEXT: ret
|
||||
; CHECK-NEXT: tail call void @llvm.memmove.p0i8.p0i8.i64(i8* [[P:%.*]], i8* [[Q:%.*]], i64 12, i1 false)
|
||||
; CHECK-NEXT: tail call void @llvm.memmove.p0i8.p0i8.i64(i8* [[P]], i8* [[Q]], i64 12, i1 false)
|
||||
; CHECK-NEXT: ret void
|
||||
;
|
||||
|
||||
tail call void @llvm.memmove.p0i8.p0i8.i64(i8* %P, i8* %Q, i64 12, i1 false)
|
||||
tail call void @llvm.memmove.p0i8.p0i8.i64(i8* %P, i8* %Q, i64 12, i1 false)
|
||||
|
|
@ -539,9 +668,10 @@ define void @test36(i8* %P, i8* %Q) {
|
|||
|
||||
define void @test37(i8* %P, i8* %Q, i8* %R) {
|
||||
; CHECK-LABEL: @test37(
|
||||
; CHECK-NEXT: tail call void @llvm.memcpy.p0i8.p0i8.i64(i8* %P, i8* %Q, i64 12, i1 false)
|
||||
; CHECK-NEXT: tail call void @llvm.memmove.p0i8.p0i8.i64(i8* %P, i8* %R, i64 12, i1 false)
|
||||
; CHECK-NEXT: ret
|
||||
; CHECK-NEXT: tail call void @llvm.memcpy.p0i8.p0i8.i64(i8* [[P:%.*]], i8* [[Q:%.*]], i64 12, i1 false)
|
||||
; CHECK-NEXT: tail call void @llvm.memmove.p0i8.p0i8.i64(i8* [[P]], i8* [[R:%.*]], i64 12, i1 false)
|
||||
; CHECK-NEXT: ret void
|
||||
;
|
||||
|
||||
tail call void @llvm.memcpy.p0i8.p0i8.i64(i8* %P, i8* %Q, i64 12, i1 false)
|
||||
tail call void @llvm.memmove.p0i8.p0i8.i64(i8* %P, i8* %R, i64 12, i1 false)
|
||||
|
|
@ -551,9 +681,10 @@ define void @test37(i8* %P, i8* %Q, i8* %R) {
|
|||
; Same caveat about memcpy as in @test18 applies here.
|
||||
define void @test38(i8* %P, i8* %Q, i8* %R) {
|
||||
; CHECK-LABEL: @test38(
|
||||
; CHECK-NEXT: tail call void @llvm.memmove.p0i8.p0i8.i64(i8* %P, i8* %Q, i64 12, i1 false)
|
||||
; CHECK-NEXT: tail call void @llvm.memcpy.p0i8.p0i8.i64(i8* %P, i8* %R, i64 12, i1 false)
|
||||
; CHECK-NEXT: ret
|
||||
; CHECK-NEXT: tail call void @llvm.memmove.p0i8.p0i8.i64(i8* [[P:%.*]], i8* [[Q:%.*]], i64 12, i1 false)
|
||||
; CHECK-NEXT: tail call void @llvm.memcpy.p0i8.p0i8.i64(i8* [[P]], i8* [[R:%.*]], i64 12, i1 false)
|
||||
; CHECK-NEXT: ret void
|
||||
;
|
||||
|
||||
tail call void @llvm.memmove.p0i8.p0i8.i64(i8* %P, i8* %Q, i64 12, i1 false)
|
||||
tail call void @llvm.memcpy.p0i8.p0i8.i64(i8* %P, i8* %R, i64 12, i1 false)
|
||||
|
|
@ -562,9 +693,10 @@ define void @test38(i8* %P, i8* %Q, i8* %R) {
|
|||
|
||||
define void @test39(i8* %P, i8* %Q, i8* %R) {
|
||||
; CHECK-LABEL: @test39(
|
||||
; CHECK-NEXT: tail call void @llvm.memcpy.p0i8.p0i8.i64(i8* %P, i8* %Q, i64 12, i1 false)
|
||||
; CHECK-NEXT: tail call void @llvm.memcpy.p0i8.p0i8.i64(i8* %P, i8* %R, i64 8, i1 false)
|
||||
; CHECK-NEXT: ret
|
||||
; CHECK-NEXT: tail call void @llvm.memcpy.p0i8.p0i8.i64(i8* [[P:%.*]], i8* [[Q:%.*]], i64 12, i1 false)
|
||||
; CHECK-NEXT: tail call void @llvm.memcpy.p0i8.p0i8.i64(i8* [[P]], i8* [[R:%.*]], i64 8, i1 false)
|
||||
; CHECK-NEXT: ret void
|
||||
;
|
||||
|
||||
tail call void @llvm.memcpy.p0i8.p0i8.i64(i8* %P, i8* %Q, i64 12, i1 false)
|
||||
tail call void @llvm.memcpy.p0i8.p0i8.i64(i8* %P, i8* %R, i64 8, i1 false)
|
||||
|
|
|
|||
Loading…
Reference in New Issue