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[WebAssembly] Handle CopyToReg nodes with flag results in LowerCopyToReg.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@261457 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Dan Gohman 2016-02-20 23:09:44 +00:00
parent b8fb88e6c7
commit 772074148f
2 changed files with 19 additions and 3 deletions
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10
lib/Target/WebAssembly/WebAssemblyISelLowering.cpp
View File

@ -558,16 +558,20 @@ SDValue WebAssemblyTargetLowering::LowerCopyToReg(SDValue Op,
// need to insert some kind of instruction that can take an FI operand and
// produces a value usable by CopyToReg (i.e. in a vreg). So insert a dummy
// copy_local between Op and its FI operand.
SDValue Chain = Op.getOperand(0);
SDLoc DL(Op);
unsigned Reg = cast<RegisterSDNode>(Op.getOperand(1))->getReg();
EVT VT = Src.getValueType();
SDValue Copy(
DAG.getMachineNode(VT == MVT::i32 ? WebAssembly::COPY_LOCAL_I32
: WebAssembly::COPY_LOCAL_I64,
DL, VT, Src),
0);
return DAG.getCopyToReg(Op.getOperand(0), DL,
cast<RegisterSDNode>(Op.getOperand(1))->getReg(),
Copy);
return Op.getNode()->getNumValues() == 1
? DAG.getCopyToReg(Chain, DL, Reg, Copy)
: DAG.getCopyToReg(Chain, DL, Reg, Copy, Op.getNumOperands() == 4
? Op.getOperand(3)
: SDValue());
}
return SDValue();
}

12
test/CodeGen/WebAssembly/userstack.ll
View File

@ -217,4 +217,16 @@ define void @frameaddress_1() {
ret void
}
; Test a stack address passed to an inline asm.
; CHECK-LABEL: inline_asm:
; CHECK: __stack_pointer
; CHECK: #APP
; CHECK-NEXT: # %{{[0-9]+}}{{$}}
; CHECK-NEXT: #NO_APP
define void @inline_asm() {
%tmp = alloca i8
call void asm sideeffect "# %0", "r"(i8* %tmp)
ret void
}
; TODO: test over-aligned alloca