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https://github.com/c64scene-ar/llvm-6502.git
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24ab21c691
it's not a dead store if that pointer is used. Whoops! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@164583 91177308-0d34-0410-b5e6-96231b3b80d8
57 lines
1.5 KiB
LLVM
57 lines
1.5 KiB
LLVM
; RUN: opt -S -basicaa -dse < %s | FileCheck %s
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declare i8* @strcpy(i8* %dest, i8* %src) nounwind
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define void @test1(i8* %src) {
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; CHECK: @test1
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%B = alloca [16 x i8]
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%dest = getelementptr inbounds [16 x i8]* %B, i64 0, i64 0
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; CHECK-NOT: @strcpy
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%call = call i8* @strcpy(i8* %dest, i8* %src)
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; CHECK: ret void
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ret void
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}
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declare i8* @strncpy(i8* %dest, i8* %src, i32 %n) nounwind
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define void @test2(i8* %src) {
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; CHECK: @test2
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%B = alloca [16 x i8]
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%dest = getelementptr inbounds [16 x i8]* %B, i64 0, i64 0
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; CHECK-NOT: @strcpy
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%call = call i8* @strncpy(i8* %dest, i8* %src, i32 12)
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; CHECK: ret void
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ret void
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}
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declare i8* @strcat(i8* %dest, i8* %src) nounwind
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define void @test3(i8* %src) {
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; CHECK: @test3
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%B = alloca [16 x i8]
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%dest = getelementptr inbounds [16 x i8]* %B, i64 0, i64 0
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; CHECK-NOT: @strcpy
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%call = call i8* @strcat(i8* %dest, i8* %src)
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; CHECK: ret void
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ret void
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}
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declare i8* @strncat(i8* %dest, i8* %src, i32 %n) nounwind
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define void @test4(i8* %src) {
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; CHECK: @test4
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%B = alloca [16 x i8]
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%dest = getelementptr inbounds [16 x i8]* %B, i64 0, i64 0
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; CHECK-NOT: @strcpy
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%call = call i8* @strncat(i8* %dest, i8* %src, i32 12)
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; CHECK: ret void
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ret void
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}
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define void @test5(i8* nocapture %src) {
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; CHECK: @test5
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%dest = alloca [100 x i8], align 16
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%arraydecay = getelementptr inbounds [100 x i8]* %dest, i64 0, i64 0
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%call = call i8* @strcpy(i8* %arraydecay, i8* %src)
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; CHECK: %call = call i8* @strcpy
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%arrayidx = getelementptr inbounds i8* %call, i64 10
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store i8 97, i8* %arrayidx, align 1
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ret void
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}
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