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Finish materialize for ints 

Summary: We add code to materialize all integer literals.

Test Plan: simplestorei.ll

Reviewers: dsanders

Reviewed By: dsanders

Differential Revision: http://reviews.llvm.org/D3596

llvm-svn: 208923
This commit is contained in:
Reed Kotler 2014-05-15 21:54:15 +00:00
parent d504a74e3c
commit 6280d9711d
2 changed files with 106 additions and 8 deletions
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49
llvm/lib/Target/Mips/MipsFastISel.cpp
View File

@ -79,6 +79,7 @@ private:
unsigned MaterializeFP(const ConstantFP *CFP, MVT VT);
unsigned MaterializeGV(const GlobalValue *GV, MVT VT);
unsigned MaterializeInt(const Constant *C, MVT VT);
unsigned Materialize32BitInt(int64_t Imm, const TargetRegisterClass *RC);
};
bool MipsFastISel::isTypeLegal(Type *Ty, MVT &VT) {
@ -226,20 +227,52 @@ unsigned MipsFastISel::MaterializeGV(const GlobalValue *GV, MVT VT) {
return DestReg;
}
unsigned MipsFastISel::MaterializeInt(const Constant *C, MVT VT) {
if (VT != MVT::i32)
if (VT != MVT::i32 && VT != MVT::i16 && VT != MVT::i8 && VT != MVT::i1)
return 0;
const TargetRegisterClass *RC = &Mips::GPR32RegClass;
// If the constant is in range, use a load-immediate.
const ConstantInt *CI = cast<ConstantInt>(C);
if (isInt<16>(CI->getSExtValue())) {
int64_t Imm;
if (CI->isNegative())
Imm = CI->getSExtValue();
else
Imm = CI->getZExtValue();
return Materialize32BitInt(Imm, RC);
}
unsigned MipsFastISel::Materialize32BitInt(int64_t Imm,
const TargetRegisterClass *RC) {
unsigned ResultReg = createResultReg(RC);
if (isInt<16>(Imm)) {
unsigned Opc = Mips::ADDiu;
unsigned ImmReg = createResultReg(RC);
BuildMI(*FuncInfo.MBB, FuncInfo.InsertPt, DbgLoc, TII.get(Opc), ImmReg)
BuildMI(*FuncInfo.MBB, FuncInfo.InsertPt, DbgLoc, TII.get(Opc), ResultReg)
.addReg(Mips::ZERO)
.addImm(CI->getSExtValue());
return ImmReg;
.addImm(Imm);
return ResultReg;
} else if (isUInt<16>(Imm)) {
BuildMI(*FuncInfo.MBB, FuncInfo.InsertPt, DbgLoc, TII.get(Mips::ORi),
ResultReg)
.addReg(Mips::ZERO)
.addImm(Imm);
return ResultReg;
}
return 0;
unsigned Lo = Imm & 0xFFFF;
unsigned Hi = (Imm >> 16) & 0xFFFF;
if (Lo) {
// Both Lo and Hi have nonzero bits.
unsigned TmpReg = createResultReg(RC);
BuildMI(*FuncInfo.MBB, FuncInfo.InsertPt, DbgLoc, TII.get(Mips::LUi),
TmpReg).addImm(Hi);
BuildMI(*FuncInfo.MBB, FuncInfo.InsertPt, DbgLoc, TII.get(Mips::ORi),
ResultReg)
.addReg(TmpReg)
.addImm(Lo);
} else {
BuildMI(*FuncInfo.MBB, FuncInfo.InsertPt, DbgLoc, TII.get(Mips::LUi),
ResultReg).addImm(Hi);
}
return ResultReg;
}
namespace llvm {

65
llvm/test/CodeGen/Mips/Fast-ISel/simplestorei.ll Normal file
View File

@ -0,0 +1,65 @@
; RUN: llc -march=mipsel -relocation-model=pic -O0 -mips-fast-isel -fast-isel-abort -mcpu=mips32r2 \
; RUN: < %s | FileCheck %s
@ijk = external global i32
; Function Attrs: nounwind
define void @si2_1() #0 {
entry:
store i32 32767, i32* @ijk, align 4
; CHECK: .ent si2_1
; CHECK: addiu $[[REG1:[0-9]+]], $zero, 32767
; CHECK: lw $[[REG2:[0-9]+]], %got(ijk)(${{[0-9]+}})
; CHECK: sw $[[REG1]], 0($[[REG2]])
ret void
}
; Function Attrs: nounwind
define void @si2_2() #0 {
entry:
store i32 -32768, i32* @ijk, align 4
; CHECK: .ent si2_2
; CHECK: addiu $[[REG1:[0-9]+]], $zero, -32768
; CHECK: lw $[[REG2:[0-9]+]], %got(ijk)(${{[0-9]+}})
; CHECK: sw $[[REG1]], 0($[[REG2]])
ret void
}
; Function Attrs: nounwind
define void @ui2_1() #0 {
entry:
store i32 65535, i32* @ijk, align 4
; CHECK: .ent ui2_1
; CHECK: ori $[[REG1:[0-9]+]], $zero, 65535
; CHECK: lw $[[REG2:[0-9]+]], %got(ijk)(${{[0-9]+}})
; CHECK: sw $[[REG1]], 0($[[REG2]])
ret void
}
; Function Attrs: nounwind
define void @ui4_1() #0 {
entry:
store i32 983040, i32* @ijk, align 4
; CHECK: .ent ui4_1
; CHECK: lui $[[REG1:[0-9]+]], 15
; CHECK: lw $[[REG2:[0-9]+]], %got(ijk)(${{[0-9]+}})
; CHECK: sw $[[REG1]], 0($[[REG2]])
ret void
}
; Function Attrs: nounwind
define void @ui4_2() #0 {
entry:
store i32 719566, i32* @ijk, align 4
; CHECK: .ent ui4_2
; CHECK: lui $[[REG1:[0-9]+]], 10
; CHECK: ori $[[REG1]], $[[REG1]], 64206
; CHECK: lw $[[REG2:[0-9]+]], %got(ijk)(${{[0-9]+}})
; CHECK: sw $[[REG1]], 0($[[REG2]])
ret void
}
attributes #0 = { nounwind "less-precise-fpmad"="false" "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" }