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Bug 8621 fix - pointer cast stripped from inline asm constraint argument.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@119590 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
John Thompson 2010-11-17 23:58:47 +00:00
parent b977f04c5b
commit 7730318000
2 changed files with 27 additions and 3 deletions
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3
lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
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@ -5545,9 +5545,6 @@ void SelectionDAGBuilder::visitInlineAsm(ImmutableCallSite CS) {
// If this is an input or an indirect output, process the call argument.
// BasicBlocks are labels, currently appearing only in asm's.
if (OpInfo.CallOperandVal) {
// Strip bitcasts, if any. This mostly comes up for functions.
OpInfo.CallOperandVal = OpInfo.CallOperandVal->stripPointerCasts();
if (const BasicBlock *BB = dyn_cast<BasicBlock>(OpInfo.CallOperandVal)) {
OpInfo.CallOperand = DAG.getBasicBlock(FuncInfo.MBBMap[BB]);
} else {

27
test/CodeGen/X86/inline-asm-ptr-cast.ll Normal file
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@ -0,0 +1,27 @@
; RUN: llc -mtriple=x86_64-unknown-linux-gnu %s
; ModuleID = 'bug.c'
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"
@func.flagmask = internal constant i64 1, align 8
define void @func() nounwind {
entry:
%src = alloca i32, align 4
%dst = alloca i32, align 4
%flags = alloca i64, align 8
%newflags = alloca i64, align 8
store i32 0, i32* %src, align 4
store i32 0, i32* %dst, align 4
store i64 1, i64* %flags, align 8
store i64 -1, i64* %newflags, align 8
%0 = bitcast i32* %dst to i8*
%tmp = load i64* %flags, align 8
%and = and i64 %tmp, 1
%1 = bitcast i32* %src to i8*
%tmp1 = load i8* %1
%2 = bitcast i32* %dst to i8*
%tmp2 = load i8* %2
call void asm "pushfq \0Aandq $2, (%rsp) \0Aorq $3, (%rsp) \0Apopfq \0Aaddb $4, $1 \0Apushfq \0Apopq $0 \0A", "=*&rm,=*&rm,i,r,r,1,~{cc},~{dirflag},~{fpsr},~{flags}"(i64* %newflags, i8* %0, i64 -2, i64 %and, i8 %tmp1, i8 %tmp2) nounwind
ret void
}