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38 lines
1.0 KiB
LLVM
38 lines
1.0 KiB
LLVM
; RUN: opt < %s -simplify-libcalls -S | FileCheck %s
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@str = internal constant [13 x i8] c"hello world\0A\00" ; <[13 x i8]*> [#uses=1]
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@str1 = internal constant [2 x i8] c"h\00" ; <[2 x i8]*> [#uses=1]
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; CHECK: private unnamed_addr constant [12 x i8] c"hello world\00"
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declare i32 @printf(i8*, ...)
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; CHECK: define void @f0
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; CHECK-NOT: printf
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; CHECK: }
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define void @f0() {
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entry:
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%tmp1 = tail call i32 (i8*, ...)* @printf( i8* getelementptr ([13 x i8]* @str, i32 0, i32 0) ) ; <i32> [#uses=0]
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ret void
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}
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; CHECK: define void @f1
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; CHECK-NOT: printf
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; CHECK: }
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define void @f1() {
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entry:
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%tmp1 = tail call i32 (i8*, ...)* @printf( i8* getelementptr ([2 x i8]* @str1, i32 0, i32 0) ) ; <i32> [#uses=0]
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ret void
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}
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; Verify that we don't turn this into a putchar call (thus changing the return
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; value).
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;
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; CHECK: define i32 @f2
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; CHECK: printf
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; CHECK: }
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define i32 @f2() {
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%call = call i32 (i8*, ...)* @printf(i8* getelementptr inbounds ([2 x i8]* @str1, i32 0, i32 0))
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ret i32 %call
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}
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