[MIPS GlobalISel] Lower pointer arguments

Add support for lowering pointer arguments.
Changing type from pointer to integer is already done in
MipsTargetLowering::getRegisterTypeForCallingConv.

Patch by Petar Avramovic.

Differential Revision: https://reviews.llvm.org/D49419

llvm-svn: 337912

2 files changed, 3 insertions, 1 deletions

diff --git a/llvm/lib/Target/Mips/MipsCallLowering.cpp b/llvm/lib/Target/Mips/MipsCallLowering.cpp
index cb3c5ef752d..e82f62260b3 100644
--- a/llvm/lib/Target/Mips/MipsCallLowering.cpp
+++ b/llvm/lib/Target/Mips/MipsCallLowering.cpp
@@ -186,6 +186,8 @@ bool OutgoingValueHandler::handle(ArrayRef<CCValAssign> ArgLocs,
 static bool isSupportedType(Type *T) {
   if (T->isIntegerTy() && T->getScalarSizeInBits() == 32)
     return true;
+  if (T->isPointerTy())
+    return true;
   return false;
 }
 
diff --git a/llvm/lib/Target/Mips/MipsLegalizerInfo.cpp b/llvm/lib/Target/Mips/MipsLegalizerInfo.cpp
index 3e2fcd6122a..da6f9dabdaa 100644
--- a/llvm/lib/Target/Mips/MipsLegalizerInfo.cpp
+++ b/llvm/lib/Target/Mips/MipsLegalizerInfo.cpp
@@ -25,7 +25,7 @@ MipsLegalizerInfo::MipsLegalizerInfo(const MipsSubtarget &ST) {
   getActionDefinitionsBuilder(G_ADD).legalFor({s32});
 
   getActionDefinitionsBuilder({G_LOAD, G_STORE})
-      .legalFor({{s32, p0}});
+      .legalForCartesianProduct({p0, s32}, {p0});
 
   getActionDefinitionsBuilder(G_CONSTANT)
       .legalFor({s32});