41 lines
2.0 KiB
LLVM
41 lines
2.0 KiB
LLVM
; Test that the SPrintFOptimizer works correctly
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; RUN: opt < %s -simplify-libcalls -S | \
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; RUN: not grep {call.*sprintf}
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; This transformation requires the pointer size, as it assumes that size_t is
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; the size of a pointer.
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target datalayout = "-p:64:64:64"
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@hello = constant [6 x i8] c"hello\00" ; <[6 x i8]*> [#uses=1]
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@null = constant [1 x i8] zeroinitializer ; <[1 x i8]*> [#uses=1]
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@null_hello = constant [7 x i8] c"\00hello\00" ; <[7 x i8]*> [#uses=1]
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@fmt1 = constant [3 x i8] c"%s\00" ; <[3 x i8]*> [#uses=1]
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@fmt2 = constant [3 x i8] c"%c\00" ; <[3 x i8]*> [#uses=1]
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declare i32 @sprintf(i8*, i8*, ...)
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declare i32 @puts(i8*)
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define i32 @foo(i8* %p) {
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%target = alloca [1024 x i8] ; <[1024 x i8]*> [#uses=1]
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%target_p = getelementptr [1024 x i8]* %target, i32 0, i32 0 ; <i8*> [#uses=7]
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%hello_p = getelementptr [6 x i8]* @hello, i32 0, i32 0 ; <i8*> [#uses=2]
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%null_p = getelementptr [1 x i8]* @null, i32 0, i32 0 ; <i8*> [#uses=1]
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%nh_p = getelementptr [7 x i8]* @null_hello, i32 0, i32 0 ; <i8*> [#uses=1]
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%fmt1_p = getelementptr [3 x i8]* @fmt1, i32 0, i32 0 ; <i8*> [#uses=2]
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%fmt2_p = getelementptr [3 x i8]* @fmt2, i32 0, i32 0 ; <i8*> [#uses=1]
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store i8 0, i8* %target_p
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%r1 = call i32 (i8*, i8*, ...)* @sprintf( i8* %target_p, i8* %hello_p ) ; <i32> [#uses=1]
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%r2 = call i32 (i8*, i8*, ...)* @sprintf( i8* %target_p, i8* %null_p ) ; <i32> [#uses=1]
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%r3 = call i32 (i8*, i8*, ...)* @sprintf( i8* %target_p, i8* %nh_p ) ; <i32> [#uses=1]
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%r4 = call i32 (i8*, i8*, ...)* @sprintf( i8* %target_p, i8* %fmt1_p, i8* %hello_p ) ; <i32> [#uses=1]
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%r4.1 = call i32 (i8*, i8*, ...)* @sprintf( i8* %target_p, i8* %fmt1_p, i8* %p ) ; <i32> [#uses=1]
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%r5 = call i32 (i8*, i8*, ...)* @sprintf( i8* %target_p, i8* %fmt2_p, i32 82 ) ; <i32> [#uses=1]
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%r6 = add i32 %r1, %r2 ; <i32> [#uses=1]
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%r7 = add i32 %r3, %r6 ; <i32> [#uses=1]
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%r8 = add i32 %r5, %r7 ; <i32> [#uses=1]
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%r9 = add i32 %r8, %r4 ; <i32> [#uses=1]
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%r10 = add i32 %r9, %r4.1 ; <i32> [#uses=1]
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ret i32 %r10
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}
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