From fd888630b5295d9b1a29c45baff0cfe38cd2619d Mon Sep 17 00:00:00 2001
From: Zoran Jovanovic <zoran.jovanovic@imgtec.com>
Date: Wed, 12 Nov 2014 13:30:10 +0000
Subject: [PATCH] [mips][micromips] Add predicate 'InMicroMips' at CodeGen
 patterns for microMIPS instructions Differential Revision:
 http://reviews.llvm.org/D6198

llvm-svn: 221780
---
 llvm/lib/Target/Mips/MicroMipsInstrInfo.td |  3 ++-
 llvm/test/CodeGen/Mips/Fast-ISel/shift.ll  | 24 ++++++++++++++++++++++
 2 files changed, 26 insertions(+), 1 deletion(-)
 create mode 100644 llvm/test/CodeGen/Mips/Fast-ISel/shift.ll

diff --git a/llvm/lib/Target/Mips/MicroMipsInstrInfo.td b/llvm/lib/Target/Mips/MicroMipsInstrInfo.td
index a4393b36873a..7c5fd64765e6 100644
--- a/llvm/lib/Target/Mips/MicroMipsInstrInfo.td
+++ b/llvm/lib/Target/Mips/MicroMipsInstrInfo.td
@@ -510,6 +510,8 @@ let DecoderNamespace = "MicroMips", Predicates = [InMicroMips] in {
   def TLBWR_MM : MMRel, TLB<"tlbwr">, COP0_TLB_FM_MM<0xcd>;
 }
 
+let Predicates = [InMicroMips] in {
+
 //===----------------------------------------------------------------------===//
 // MicroMips arbitrary patterns that map to one or more instructions
 //===----------------------------------------------------------------------===//
@@ -533,6 +535,5 @@ def : MipsPat<(srl GPR32:$src, immZExt5:$imm),
 // MicroMips instruction aliases
 //===----------------------------------------------------------------------===//
 
-let Predicates = [InMicroMips] in {
   def : MipsInstAlias<"wait", (WAIT_MM 0x0), 1>;
 }
diff --git a/llvm/test/CodeGen/Mips/Fast-ISel/shift.ll b/llvm/test/CodeGen/Mips/Fast-ISel/shift.ll
new file mode 100644
index 000000000000..18fd5ac32d22
--- /dev/null
+++ b/llvm/test/CodeGen/Mips/Fast-ISel/shift.ll
@@ -0,0 +1,24 @@
+; RUN: llc -march=mipsel -mcpu=mips32r2 -O1 -fast-isel=true -mips-fast-isel -filetype=obj %s -o - \
+; RUN:   | llvm-objdump -arch mipsel -mcpu=mips32r2 -d - | FileCheck %s
+
+; This test checks that encoding for srl is correct when fast-isel for mips32r2 is used.
+
+%struct.s = type { [4 x i8], i32 }
+
+define i32 @main() nounwind uwtable {
+entry:
+  %foo = alloca %struct.s, align 4
+  %0 = bitcast %struct.s* %foo to i32*
+  %bf.load = load i32* %0, align 4
+  %bf.lshr = lshr i32 %bf.load, 2
+  %cmp = icmp ne i32 %bf.lshr, 2
+  br i1 %cmp, label %if.then, label %if.end
+
+if.then:
+  unreachable
+
+if.end:
+  ret i32 0
+}
+
+; CHECK: srl    ${{[0-9]+}}, ${{[0-9]+}}, {{[0-9]+}}