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[GlobalISel][X86] LowerCall, for now don't handel ByValue function arguments.

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llvm-svn: 311321
This commit is contained in:
Igor Breger 2017-08-21 08:59:59 +00:00
parent b7598a7f77
commit d0f60004ec
2 changed files with 16 additions and 0 deletions
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5
lib/Target/X86/X86CallLowering.cpp
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@ -322,6 +322,11 @@ bool X86CallLowering::lowerCall(MachineIRBuilder &MIRBuilder,
SmallVector<ArgInfo, 8> SplitArgs;
for (const auto &OrigArg : OrigArgs) {
// TODO: handle not simple cases.
if (OrigArg.Flags.isByVal())
return false;
if (!splitToValueTypes(OrigArg, SplitArgs, DL, MRI,
[&](ArrayRef<unsigned> Regs) {
MIRBuilder.buildUnmerge(Regs, OrigArg.Reg);

11
test/CodeGen/X86/GlobalISel/x86_64-fallback.ll
View File

@ -16,3 +16,14 @@ define void @test_x86_fp80_dump(x86_fp80* %ptr){
ret void
}
; Check that we fallback on byVal argument
; FALLBACK-WITH-REPORT-ERR: remark: <unknown>:0:0: unable to translate instruction: call: ' call void @ScaleObjectOverwrite_3(%struct.PointListStruct* %index, %struct.PointListStruct* byval %index)' (in function: ScaleObjectOverwrite_2)
; FALLBACK-WITH-REPORT-ERR: warning: Instruction selection used fallback path for ScaleObjectOverwrite_2
; FALLBACK-WITH-REPORT-OUT-LABEL: ScaleObjectOverwrite_2:
%struct.PointListStruct = type { i8*, i8* }
declare void @ScaleObjectOverwrite_3(%struct.PointListStruct* %index, %struct.PointListStruct* byval %index2)
define void @ScaleObjectOverwrite_2(%struct.PointListStruct* %index) {
entry:
call void @ScaleObjectOverwrite_3(%struct.PointListStruct* %index, %struct.PointListStruct* byval %index)
ret void
}