From: Jozef Kolek <jozef.kolek@imgtec.com>
Date: Wed, 11 Mar 2015 20:28:31 +0000 (+0000)
Subject: [mips][microMIPS] Make usage of NOT16 by code generator
X-Git-Url: http://plrg.eecs.uci.edu/git/?p=oota-llvm.git;a=commitdiff_plain;h=a2b4e9a30e575cb22678f53208c2d477c6a11e2a

[mips][microMIPS] Make usage of NOT16 by code generator

Differential Revision: http://reviews.llvm.org/D7748


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@231963 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/Target/Mips/MicroMipsInstrInfo.td b/lib/Target/Mips/MicroMipsInstrInfo.td
index 19120202af7..2aab739dbd2 100644
--- a/lib/Target/Mips/MicroMipsInstrInfo.td
+++ b/lib/Target/Mips/MicroMipsInstrInfo.td
@@ -885,6 +885,8 @@ def : MipsPat<(i32 immSExt16:$imm),
               (ADDiu_MM ZERO, immSExt16:$imm)>;
 def : MipsPat<(i32 immZExt16:$imm),
               (ORi_MM ZERO, immZExt16:$imm)>;
+def : MipsPat<(not GPR32:$in),
+              (NOR_MM GPR32Opnd:$in, ZERO)>;
 
 def : MipsPat<(add GPRMM16:$src, immSExtAddiur2:$imm),
               (ADDIUR2_MM GPRMM16:$src, immSExtAddiur2:$imm)>;
diff --git a/lib/Target/Mips/MipsInstrInfo.td b/lib/Target/Mips/MipsInstrInfo.td
index 3955a6249f3..e543641ceaa 100644
--- a/lib/Target/Mips/MipsInstrInfo.td
+++ b/lib/Target/Mips/MipsInstrInfo.td
@@ -1763,9 +1763,11 @@ def : WrapperPat<tblockaddress, ADDiu, GPR32>;
 def : WrapperPat<tjumptable, ADDiu, GPR32>;
 def : WrapperPat<tglobaltlsaddr, ADDiu, GPR32>;
 
+let AdditionalPredicates = [NotInMicroMips] in {
 // Mips does not have "not", so we expand our way
 def : MipsPat<(not GPR32:$in),
               (NOR GPR32Opnd:$in, ZERO)>;
+}
 
 // extended loads
 def : MipsPat<(i32 (extloadi1  addr:$src)), (LBu addr:$src)>;
diff --git a/test/CodeGen/Mips/micromips-not16.ll b/test/CodeGen/Mips/micromips-not16.ll
new file mode 100644
index 00000000000..d31aefae6f0
--- /dev/null
+++ b/test/CodeGen/Mips/micromips-not16.ll
@@ -0,0 +1,26 @@
+; RUN: llc -march=mipsel -mcpu=mips32r2 -mattr=+micromips \
+; RUN:   -relocation-model=pic -O3 < %s | FileCheck %s
+
+define i32 @main() {
+entry:
+  %retval = alloca i32, align 4
+  %x = alloca i64, align 8
+  store i32 0, i32* %retval
+  %0 = load i64, i64* %x, align 8
+  %cmp = icmp ne i64 %0, 9223372036854775807
+  br i1 %cmp, label %if.then, label %if.end
+
+if.then:
+  store i32 1, i32* %retval
+  br label %return
+
+if.end:
+  store i32 0, i32* %retval
+  br label %return
+
+return:
+  %1 = load i32, i32* %retval
+  ret i32 %1
+}
+
+; CHECK: not16