[llvm-commits] [llvm] r65152 - in /llvm/trunk: lib/Target/X86/X86ISelLowering.cpp test/CodeGen/X86/ret-mmx.ll
Evan Cheng
evan.cheng at apple.com
Fri Feb 20 12:43:02 PST 2009
Author: evancheng
Date: Fri Feb 20 14:43:02 2009
New Revision: 65152
URL: http://llvm.org/viewvc/llvm-project?rev=65152&view=rev
Log:
Support return of MMX values in 64-bit mode.
Added:
llvm/trunk/test/CodeGen/X86/ret-mmx.ll
Modified:
llvm/trunk/lib/Target/X86/X86ISelLowering.cpp
Modified: llvm/trunk/lib/Target/X86/X86ISelLowering.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/X86/X86ISelLowering.cpp?rev=65152&r1=65151&r2=65152&view=diff
==============================================================================
--- llvm/trunk/lib/Target/X86/X86ISelLowering.cpp (original)
+++ llvm/trunk/lib/Target/X86/X86ISelLowering.cpp Fri Feb 20 14:43:02 2009
@@ -1071,9 +1071,21 @@
CopyVT = MVT::f80;
}
- Chain = DAG.getCopyFromReg(Chain, dl, VA.getLocReg(),
- CopyVT, InFlag).getValue(1);
- SDValue Val = Chain.getValue(0);
+ SDValue Val;
+ if (Is64Bit && CopyVT.isVector() && CopyVT.getSizeInBits() == 64) {
+ // For x86-64, MMX values are returned in XMM0 and XMM1. Issue an
+ // extract_vector_elt to i64 and then bit_convert it to the desired type.
+ Chain = DAG.getCopyFromReg(Chain, dl, VA.getLocReg(),
+ MVT::v2i64, InFlag).getValue(1);
+ Val = Chain.getValue(0);
+ Val = DAG.getNode(ISD::EXTRACT_VECTOR_ELT, dl, MVT::i64,
+ Val, DAG.getConstant(0, MVT::i64));
+ Val = DAG.getNode(ISD::BIT_CONVERT, dl, CopyVT, Val);
+ } else {
+ Chain = DAG.getCopyFromReg(Chain, dl, VA.getLocReg(),
+ CopyVT, InFlag).getValue(1);
+ Val = Chain.getValue(0);
+ }
InFlag = Chain.getValue(2);
if (CopyVT != VA.getValVT()) {
Added: llvm/trunk/test/CodeGen/X86/ret-mmx.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/CodeGen/X86/ret-mmx.ll?rev=65152&view=auto
==============================================================================
--- llvm/trunk/test/CodeGen/X86/ret-mmx.ll (added)
+++ llvm/trunk/test/CodeGen/X86/ret-mmx.ll Fri Feb 20 14:43:02 2009
@@ -0,0 +1,13 @@
+; RUN: llvm-as < %s | llc -march=x86-64 -mattr=+mmx
+; rdar://6602459
+
+ at g_v1di = external global <1 x i64>
+
+define void @test_v1di() nounwind {
+entry:
+ %call = call <1 x i64> @return_v1di() ; <<1 x i64>> [#uses=0]
+ store <1 x i64> %call, <1 x i64>* @g_v1di
+ ret void
+}
+
+declare <1 x i64> @return_v1di()
More information about the llvm-commits
mailing list