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[mips][microMIPS] Prevent usage of OR16_MMR6 instruction when code for microMIPS is generated.

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Author: milena.vujosevic.janicic
Reviewers: dsanders
Differential Revision: http://reviews.llvm.org/D17373

llvm-svn: 262725
This commit is contained in:
Zoran Jovanovic 2016-03-04 17:34:31 +00:00
parent b00a3e6034
commit ed3c27bd7d
3 changed files with 19 additions and 14 deletions
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2
lib/Target/Mips/MicroMips32r6InstrFormats.td
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@ -751,7 +751,7 @@ class POOL16C_NOT16_FM_MMR6 : MicroMipsR6Inst16 {
let Inst{3-0} = 0b0000;
}
class POOL16C_OR16_XOR16_FM_MMR6<bits<4> op> {
class POOL16C_OR16_XOR16_FM_MMR6<bits<4> op> : MicroMipsR6Inst16 {
bits<3> rt;
bits<3> rs;

2
lib/Target/Mips/MicroMips32r6InstrInfo.td
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@ -830,7 +830,7 @@ class SDBBP16_MMR6_DESC : BrkSdbbp16MM<"sdbbp16">, MMR6Arch<"sdbbp16">,
class SUBU16_MMR6_DESC : ArithRMM16<"subu16", GPRMM16Opnd, 0, II_SUBU, sub>,
MMR6Arch<"sdbbp16">, MicroMipsR6Inst16;
class XOR16_MMR6_DESC : LogicRMM16<"xor16", GPRMM16Opnd, II_XOR, xor>,
MMR6Arch<"sdbbp16">, MicroMipsR6Inst16;
MMR6Arch<"sdbbp16">;
class LW_MMR6_DESC : MMR6Arch<"lw">, MipsR6Inst {
dag OutOperandList = (outs GPR32Opnd:$rt);

29
test/CodeGen/Mips/micromips-or16.ll
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@ -1,18 +1,23 @@
; RUN: llc -march=mipsel -mcpu=mips32r2 -mattr=+micromips \
; RUN: -relocation-model=pic -O3 < %s | FileCheck %s
; RUN: llc -O0 -march=mips -mcpu=mips32r2 -mattr=+micromips \
; RUN: -asm-show-inst < %s | FileCheck %s
define i32 @main() {
entry:
%retval = alloca i32, align 4
%a = alloca i32, align 4
%b = alloca i32, align 4
%c = alloca i32, align 4
store i32 0, i32* %retval
%0 = load i32, i32* %b, align 4
%1 = load i32, i32* %c, align 4
%or = or i32 %0, %1
store i32 %or, i32* %a, align 4
ret i32 0
; Branch instruction added to enable FastISel::selectOperator
; to select OR instruction
define i32 @f1(i32 signext %a, i32 signext %b) {
; CHECK-LABEL: f1
; CHECK-NOT: OR16_MMR6
%1 = or i32 %a, %b
br label %b1
b1:
ret i32 %1
}
define i32 @f2(i32 signext %a, i32 signext %b) {
entry:
; CHECK-LABEL: f2
; CHECK: or16
%0 = or i32 %a, %b
ret i32 %0
}