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[mips][microMIPS] Make usage of ADDU16 and SUBU16 by code generator

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Differential Revision: http://reviews.llvm.org/D7609


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@231249 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Jozef Kolek 2015-03-04 15:47:42 +00:00
parent a558232f85
commit 2e37a6f306
4 changed files with 42 additions and 3 deletions
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6
lib/Target/Mips/MicroMipsInstrInfo.td
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@ -642,8 +642,10 @@ let DecoderNamespace = "MicroMips", Predicates = [InMicroMips] in {
LW_FM_MM<0xc>;
/// Arithmetic Instructions (3-Operand, R-Type)
def ADDu_MM : MMRel, ArithLogicR<"addu", GPR32Opnd>, ADD_FM_MM<0, 0x150>;
def SUBu_MM : MMRel, ArithLogicR<"subu", GPR32Opnd>, ADD_FM_MM<0, 0x1d0>;
def ADDu_MM : MMRel, ArithLogicR<"addu", GPR32Opnd, 1, II_ADDU, add>,
ADD_FM_MM<0, 0x150>;
def SUBu_MM : MMRel, ArithLogicR<"subu", GPR32Opnd, 0, II_SUBU, sub>,
ADD_FM_MM<0, 0x1d0>;
def MUL_MM : MMRel, ArithLogicR<"mul", GPR32Opnd>, ADD_FM_MM<0, 0x210>;
def ADD_MM : MMRel, ArithLogicR<"add", GPR32Opnd>, ADD_FM_MM<0, 0x110>;
def SUB_MM : MMRel, ArithLogicR<"sub", GPR32Opnd>, ADD_FM_MM<0, 0x190>;

3
lib/Target/Mips/MipsInstrInfo.td
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@ -1140,12 +1140,13 @@ def XORi : MMRel, ArithLogicI<"xori", uimm16, GPR32Opnd, II_XORI, immZExt16,
xor>,
ADDI_FM<0xe>;
def LUi : MMRel, LoadUpper<"lui", GPR32Opnd, uimm16>, LUI_FM;
let AdditionalPredicates = [NotInMicroMips] in {
/// Arithmetic Instructions (3-Operand, R-Type)
def ADDu : MMRel, ArithLogicR<"addu", GPR32Opnd, 1, II_ADDU, add>,
ADD_FM<0, 0x21>;
def SUBu : MMRel, ArithLogicR<"subu", GPR32Opnd, 0, II_SUBU, sub>,
ADD_FM<0, 0x23>;
}
let Defs = [HI0, LO0] in
def MUL : MMRel, ArithLogicR<"mul", GPR32Opnd, 1, II_MUL, mul>,
ADD_FM<0x1c, 2>, ISA_MIPS32_NOT_32R6_64R6;

18
test/CodeGen/Mips/micromips-addu16.ll Normal file
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@ -0,0 +1,18 @@
; 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
%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
%add = add nsw i32 %0, %1
store i32 %add, i32* %a, align 4
ret i32 0
}
; CHECK: addu16

18
test/CodeGen/Mips/micromips-subu16.ll Normal file
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@ -0,0 +1,18 @@
; 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
%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
%sub = sub nsw i32 %0, %1
store i32 %sub, i32* %a, align 4
ret i32 0
}
; CHECK: subu16