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PR16490: fix a crash in ARMDAGToDAGISel::SelectInlineAsm.

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In the SelectionDAG immediate operands to inline asm are constructed as
two separate operands. The first is a constant of value InlineAsm::Kind_Imm
and the second is a constant with the value of the immediate.

In ARMDAGToDAGISel::SelectInlineAsm, if we reach an operand of Kind_Imm we
should skip over the next operand too.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@185688 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Joey Gouly 2013-07-05 10:19:40 +00:00
parent 24663f69cc
commit 00d9fe2de7
2 changed files with 11 additions and 0 deletions
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6
lib/Target/ARM/ARMISelDAGToDAG.cpp
View File

@ -3491,6 +3491,12 @@ SDNode *ARMDAGToDAGISel::SelectInlineAsm(SDNode *N){
else
continue;
if (Kind == InlineAsm::Kind_Imm) {
SDValue op = N->getOperand(++i);
AsmNodeOperands.push_back(op);
continue;
}
unsigned NumRegs = InlineAsm::getNumOperandRegisters(Flag);
if (NumRegs)
OpChanged.push_back(false);

5
test/CodeGen/ARM/arm-modifier.ll
View File

@ -65,3 +65,8 @@ entry:
%0 = tail call i64 asm sideeffect "ldrexd $0, ${0:H}, [$1]", "=&r,r,*Qo"(i64* %val, i64* %val) nounwind
ret i64 %0
}
define void @f5(i64 %__pu_val) {
call void asm sideeffect "$1", "r,i"(i64 %__pu_val, i32 -14)
ret void
}