From 6fde8756215a725578b6afe678757f60d7f55d06 Mon Sep 17 00:00:00 2001
From: Chad Rosier <mcrosier@apple.com>
Date: Wed, 8 Feb 2012 02:29:21 +0000
Subject: [PATCH] [fast-isel] Add support for ORs with non-legal types.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@150045 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/Target/ARM/ARMFastISel.cpp       | 15 ++++++++++--
 test/CodeGen/ARM/fast-isel-binary.ll | 36 ++++++++++++++++++++++++++++
 2 files changed, 49 insertions(+), 2 deletions(-)

diff --git a/lib/Target/ARM/ARMFastISel.cpp b/lib/Target/ARM/ARMFastISel.cpp
index d2c8d15dbbb..faa3e5920ef 100644
--- a/lib/Target/ARM/ARMFastISel.cpp
+++ b/lib/Target/ARM/ARMFastISel.cpp
@@ -1733,7 +1733,6 @@ bool ARMFastISel::SelectRem(const Instruction *I, bool isSigned) {
 }
 
 bool ARMFastISel::SelectBinaryIntOp(const Instruction *I, unsigned ISDOpcode) {
-  assert (ISDOpcode == ISD::ADD && "Expected an add.");
   EVT DestVT  = TLI.getValueType(I->getType(), true);
 
   // We can get here in the case when we have a binary operation on a non-legal
@@ -1741,6 +1740,17 @@ bool ARMFastISel::SelectBinaryIntOp(const Instruction *I, unsigned ISDOpcode) {
   if (DestVT != MVT::i16 && DestVT != MVT::i8 && DestVT != MVT::i1)
     return false;
   
+  unsigned Opc;
+  switch (ISDOpcode) {
+    default: return false;
+    case ISD::ADD:
+      Opc = isThumb2 ? ARM::t2ADDrr : ARM::ADDrr;
+      break;
+    case ISD::OR:
+      Opc = isThumb2 ? ARM::t2ORRrr : ARM::ORRrr;
+      break;
+  }
+
   unsigned SrcReg1 = getRegForValue(I->getOperand(0));
   if (SrcReg1 == 0) return false;
 
@@ -1749,7 +1759,6 @@ bool ARMFastISel::SelectBinaryIntOp(const Instruction *I, unsigned ISDOpcode) {
   unsigned SrcReg2 = getRegForValue(I->getOperand(1));
   if (SrcReg2 == 0) return false;
 
-  unsigned Opc = isThumb2 ? ARM::t2ADDrr : ARM::ADDrr;
   unsigned ResultReg = createResultReg(TLI.getRegClassFor(MVT::i32));
   AddOptionalDefs(BuildMI(*FuncInfo.MBB, FuncInfo.InsertPt, DL,
                           TII.get(Opc), ResultReg)
@@ -2498,6 +2507,8 @@ bool ARMFastISel::TargetSelectInstruction(const Instruction *I) {
       return SelectFPToI(I, /*isSigned*/ false);
     case Instruction::Add:
       return SelectBinaryIntOp(I, ISD::ADD);
+    case Instruction::Or:
+      return SelectBinaryIntOp(I, ISD::OR);
     case Instruction::FAdd:
       return SelectBinaryFPOp(I, ISD::FADD);
     case Instruction::FSub:
diff --git a/test/CodeGen/ARM/fast-isel-binary.ll b/test/CodeGen/ARM/fast-isel-binary.ll
index 06d9cd3b3ca..642fcd03551 100644
--- a/test/CodeGen/ARM/fast-isel-binary.ll
+++ b/test/CodeGen/ARM/fast-isel-binary.ll
@@ -38,3 +38,39 @@ entry:
   store i16 %0, i16* %a.addr, align 4
   ret void
 }
+
+define void @or_i1(i1 %a, i1 %b) nounwind ssp {
+entry:
+; ARM: or_i1
+; THUMB: or_i1
+  %a.addr = alloca i1, align 4
+  %0 = or i1 %a, %b
+; ARM: orr r0, r0, r1
+; THUMB: orrs r0, r1
+  store i1 %0, i1* %a.addr, align 4
+  ret void
+}
+
+define void @or_i8(i8 %a, i8 %b) nounwind ssp {
+entry:
+; ARM: or_i8
+; THUMB: or_i8
+  %a.addr = alloca i8, align 4
+  %0 = or i8 %a, %b
+; ARM: orr r0, r0, r1
+; THUMB: orrs r0, r1
+  store i8 %0, i8* %a.addr, align 4
+  ret void
+}
+
+define void @or_i16(i16 %a, i16 %b) nounwind ssp {
+entry:
+; ARM: or_i16
+; THUMB: or_i16
+  %a.addr = alloca i16, align 4
+  %0 = or i16 %a, %b
+; ARM: orr r0, r0, r1
+; THUMB: orrs r0, r1
+  store i16 %0, i16* %a.addr, align 4
+  ret void
+}