maxjhandsome
/
llvm-project
forked from OSchip/llvm-project
1
0
Fork 0
Code Issues Pull Requests Packages Releases Wiki Activity

The memcpy intrinsic only takes i8* for %src and %dst, so cast them to that 

first. Fixes PR7265.

llvm-svn: 105206
This commit is contained in:
Nick Lewycky 2010-05-31 06:16:35 +00:00
parent 4708f5a89b
commit aee2632be3
2 changed files with 22 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
llvm/lib/Transforms/Utils/BuildLibCalls.cpp
View File

@ -112,10 +112,10 @@ Value *llvm::EmitStrNCpy(Value *Dst, Value *Src, Value *Len,
Value *llvm::EmitMemCpy(Value *Dst, Value *Src, Value *Len, unsigned Align,
bool isVolatile, IRBuilder<> &B, const TargetData *TD) {
Module *M = B.GetInsertBlock()->getParent()->getParent();
const Type *ArgTys[3] = { Dst->getType(), Src->getType(), Len->getType() };
Value *MemCpy = Intrinsic::getDeclaration(M, Intrinsic::memcpy, ArgTys, 3);
Dst = CastToCStr(Dst, B);
Src = CastToCStr(Src, B);
const Type *ArgTys[3] = { Dst->getType(), Src->getType(), Len->getType() };
Value *MemCpy = Intrinsic::getDeclaration(M, Intrinsic::memcpy, ArgTys, 3);
return B.CreateCall5(MemCpy, Dst, Src, Len,
ConstantInt::get(B.getInt32Ty(), Align),
ConstantInt::get(B.getInt1Ty(), isVolatile));

20
llvm/test/Transforms/SimplifyLibCalls/2010-05-30-memcpy-Struct.ll Normal file
View File

@ -0,0 +1,20 @@
; RUN: opt -simplify-libcalls %s -S -o - | FileCheck %s
; PR7265
target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64"
target triple = "x86_64-unknown-linux-gnu"
%union.anon = type { i32, [4 x i8] }
@.str = private constant [3 x i8] c"%s\00" ; <[3 x i8]*> [#uses=2]
define void @CopyEventArg(%union.anon* %ev) nounwind {
entry:
%call = call i32 (i8*, i8*, ...)* @sprintf(i8* undef, i8* getelementptr inbounds ([3 x i8]* @.str, i64 0, i64 0), %union.anon* %ev) nounwind ; <i32> [#uses=0]
; CHECK: bitcast %union.anon* %ev to i8*
; CHECK: call void @llvm.memcpy.p0i8.p0i8.i64
ret void
}
declare i32 @sprintf(i8*, i8*, ...)