From 341ea7ddf6b09d77bfe3c65664773b683386156c Mon Sep 17 00:00:00 2001
From: Hal Finkel <hfinkel@anl.gov>
Date: Thu, 6 Mar 2014 00:45:19 +0000
Subject: Fixup PPC Darwin i1 argument handling

Like on other targets, we need to zero_extend/truncate i1 args before copying
them to GPRs.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@203045 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/Target/PowerPC/PPCISelLowering.cpp | 7 +++++++
 test/CodeGen/PowerPC/ppc32-i1-vaarg.ll | 5 +++++
 2 files changed, 12 insertions(+)

diff --git a/lib/Target/PowerPC/PPCISelLowering.cpp b/lib/Target/PowerPC/PPCISelLowering.cpp
index dce6051b18..680112da9a 100644
--- a/lib/Target/PowerPC/PPCISelLowering.cpp
+++ b/lib/Target/PowerPC/PPCISelLowering.cpp
@@ -2777,6 +2777,10 @@ PPCTargetLowering::LowerFormalArguments_Darwin(
         if (GPR_idx != Num_GPR_Regs) {
           unsigned VReg = MF.addLiveIn(GPR[GPR_idx], &PPC::GPRCRegClass);
           ArgVal = DAG.getCopyFromReg(Chain, dl, VReg, MVT::i32);
+
+          if (ObjectVT == MVT::i1)
+            ArgVal = DAG.getNode(ISD::TRUNCATE, dl, MVT::i1, ArgVal);
+
           ++GPR_idx;
         } else {
           needsLoad = true;
@@ -4414,6 +4418,9 @@ PPCTargetLowering::LowerCall_Darwin(SDValue Chain, SDValue Callee,
     case MVT::i32:
     case MVT::i64:
       if (GPR_idx != NumGPRs) {
+        if (Arg.getValueType() == MVT::i1)
+          Arg = DAG.getNode(ISD::ZERO_EXTEND, dl, PtrVT, Arg);
+
         RegsToPass.push_back(std::make_pair(GPR[GPR_idx++], Arg));
       } else {
         LowerMemOpCallTo(DAG, MF, Chain, Arg, PtrOff, SPDiff, ArgOffset,
diff --git a/test/CodeGen/PowerPC/ppc32-i1-vaarg.ll b/test/CodeGen/PowerPC/ppc32-i1-vaarg.ll
index 096ea384f0..6e0aec27b7 100644
--- a/test/CodeGen/PowerPC/ppc32-i1-vaarg.ll
+++ b/test/CodeGen/PowerPC/ppc32-i1-vaarg.ll
@@ -1,4 +1,5 @@
 ; RUN: llc < %s -march=ppc32 -mcpu=ppc32 | FileCheck %s
+; RUN: llc < %s -march=ppc32 -mcpu=ppc32 -mtriple=powerpc-darwin | FileCheck %s -check-prefix=CHECK-D
 target triple = "powerpc-unknown-linux-gnu"
 
 declare void @printf(i8*, ...)
@@ -13,3 +14,7 @@ define void @main() {
 ; CHECK-DAG: crxor 6, 6, 6
 ; CHECK: bl printf
 
+; CHECK-D-LABEL: @main
+; CHECK-D: li r4, 0
+; CHECK-D: bl L_printf$stub
+
-- 
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