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Respect the 'nobuiltin' attribute when determining if a call is to a memory builtin.

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llvm-svn: 181978
This commit is contained in:
Richard Smith 2013-05-16 04:12:04 +00:00
parent 554870d776
commit 3995413b20
2 changed files with 21 additions and 0 deletions
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3
lib/Analysis/MemoryBuiltins.cpp
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@ -77,6 +77,9 @@ static Function *getCalledFunction(const Value *V, bool LookThroughBitCast) {
if (!CS.getInstruction())
return 0;
if (CS.hasFnAttr(Attribute::NoBuiltin))
return 0;
Function *Callee = CS.getCalledFunction();
if (!Callee || !Callee->isDeclaration())
return 0;

18
test/Transforms/GlobalOpt/malloc-promote-3.ll Normal file
View File

@ -0,0 +1,18 @@
; RUN: opt < %s -globalopt -S | FileCheck %s
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"
@G = internal global i32* null
define void @t() {
; CHECK: @t()
; CHECK: call i8* @malloc
%malloccall = tail call i8* @malloc(i64 mul (i64 100, i64 4)) nobuiltin
%P = bitcast i8* %malloccall to i32*
store i32* %P, i32** @G
%GV = load i32** @G
%GVe = getelementptr i32* %GV, i32 40
store i32 20, i32* %GVe
ret void
}
declare noalias i8* @malloc(i64)