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SimplifyLibCalls: Use IRBuilder.CreateGlobalString when creating a string for printf->puts, which correctly sets the unnamed_addr bit on the resulting GlobalVariable.

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Fixes PR11264.

llvm-svn: 143289
This commit is contained in:
Benjamin Kramer 2011-10-29 19:43:31 +00:00
parent ce47648159
commit d32c541fe4
2 changed files with 5 additions and 6 deletions
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6
lib/Transforms/Scalar/SimplifyLibCalls.cpp
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@ -1123,10 +1123,8 @@ struct PrintFOpt : public LibCallOptimization {
// Create a string literal with no \n on it. We expect the constant merge
// pass to be run after this pass, to merge duplicate strings.
FormatStr.erase(FormatStr.end()-1);
Constant *C = ConstantArray::get(*Context, FormatStr, true);
C = new GlobalVariable(*Callee->getParent(), C->getType(), true,
GlobalVariable::InternalLinkage, C, "str");
EmitPutS(C, B, TD);
Value *GV = B.CreateGlobalString(FormatStr, "str");
EmitPutS(GV, B, TD);
return CI->use_empty() ? (Value*)CI :
ConstantInt::get(CI->getType(), FormatStr.size()+1);
}

5
test/Transforms/SimplifyLibCalls/Printf.ll
View File

@ -1,9 +1,10 @@
; RUN: opt < %s -simplify-libcalls -S -o %t
; RUN: FileCheck < %t %s
; RUN: opt < %s -simplify-libcalls -S | FileCheck %s
@str = internal constant [13 x i8] c"hello world\0A\00" ; <[13 x i8]*> [#uses=1]
@str1 = internal constant [2 x i8] c"h\00" ; <[2 x i8]*> [#uses=1]
; CHECK: internal unnamed_addr constant [12 x i8] c"hello world\00"
declare i32 @printf(i8*, ...)
; CHECK: define void @f0