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Support for microMIPS load effective address.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@198010 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Zoran Jovanovic 2013-12-25 10:14:07 +00:00
parent ae3597c141
commit 7dc193619e
3 changed files with 35 additions and 2 deletions
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3
lib/Target/Mips/MicroMipsInstrInfo.td
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@ -78,6 +78,9 @@ let DecoderNamespace = "MicroMips", Predicates = [InMicroMips] in {
ADDI_FM_MM<0x1c>;
def LUi_MM : MMRel, LoadUpper<"lui", GPR32Opnd, uimm16>, LUI_FM_MM;
def LEA_ADDiu_MM : MMRel, EffectiveAddress<"addiu", GPR32Opnd>,
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>;

5
lib/Target/Mips/MipsInstrInfo.td
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@ -747,7 +747,8 @@ class MoveToLOHI<string opstr, RegisterOperand RO, list<Register> DefRegs>:
class EffectiveAddress<string opstr, RegisterOperand RO> :
InstSE<(outs RO:$rt), (ins mem_ea:$addr), !strconcat(opstr, "\t$rt, $addr"),
[(set RO:$rt, addr:$addr)], NoItinerary, FrmI> {
[(set RO:$rt, addr:$addr)], NoItinerary, FrmI,
!strconcat(opstr, "_lea")> {
let isCodeGenOnly = 1;
let DecoderMethod = "DecodeMem";
}
@ -1094,7 +1095,7 @@ def NOP : PseudoSE<(outs), (ins), []>, PseudoInstExpansion<(SLL ZERO, ZERO, 0)>;
// instructions. The same not happens for stack address copies, so an
// add op with mem ComplexPattern is used and the stack address copy
// can be matched. It's similar to Sparc LEA_ADDRi
def LEA_ADDiu : EffectiveAddress<"addiu", GPR32Opnd>, LW_FM<9>;
def LEA_ADDiu : MMRel, EffectiveAddress<"addiu", GPR32Opnd>, LW_FM<9>;
// MADD*/MSUB*
def MADD : MMRel, MArithR<"madd", 1>, MULT_FM<0x1c, 0>;

29
test/MC/Mips/micromips-load-effective-address.s Normal file
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@ -0,0 +1,29 @@
; RUN: llc %s -march=mipsel -mattr=micromips -filetype=asm \
; RUN: -relocation-model=pic -O3 -o - | FileCheck %s
define i32 @sum(i32* %x, i32* %y) nounwind uwtable {
entry:
%x.addr = alloca i32*, align 8
%y.addr = alloca i32*, align 8
store i32* %x, i32** %x.addr, align 8
store i32* %y, i32** %y.addr, align 8
%0 = load i32** %x.addr, align 8
%1 = load i32* %0, align 4
%2 = load i32** %y.addr, align 8
%3 = load i32* %2, align 4
%add = add nsw i32 %1, %3
ret i32 %add
}
define i32 @main() nounwind uwtable {
entry:
%retval = alloca i32, align 4
%x = alloca i32, align 4
%y = alloca i32, align 4
store i32 0, i32* %retval
%call = call i32 @sum(i32* %x, i32* %y)
ret i32 %call
}
; CHECK: addiu ${{[0-9]+}}, $sp, {{[0-9]+}}
; CHECK: addiu ${{[0-9]+}}, $sp, {{[0-9]+}}