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Add support for sign-extending non-legal types in SelectSIToFP(). 

llvm-svn: 143603
This commit is contained in:
Chad Rosier 2011-11-03 02:04:59 +00:00
parent 180319f72d
commit bf5f4bec1a
2 changed files with 110 additions and 5 deletions
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19
llvm/lib/Target/ARM/ARMFastISel.cpp
View File

@ -1329,16 +1329,25 @@ bool ARMFastISel::SelectSIToFP(const Instruction *I) {
if (!isTypeLegal(Ty, DstVT))
return false;
// FIXME: Handle sign-extension where necessary.
if (!I->getOperand(0)->getType()->isIntegerTy(32))
Value *Src = I->getOperand(0);
EVT SrcVT = TLI.getValueType(Src->getType(), true);
if (SrcVT != MVT::i32 && SrcVT != MVT::i16 && SrcVT != MVT::i8)
return false;
unsigned Op = getRegForValue(I->getOperand(0));
if (Op == 0) return false;
unsigned SrcReg = getRegForValue(Src);
if (SrcReg == 0) return false;
// Handle sign-extension.
if (SrcVT == MVT::i16 || SrcVT == MVT::i8) {
EVT DestVT = MVT::i32;
unsigned ResultReg = ARMEmitIntExt(SrcVT, SrcReg, DestVT, /*isZExt*/ false);
if (ResultReg == 0) return false;
SrcReg = ResultReg;
}
// The conversion routine works on fp-reg to fp-reg and the operand above
// was an integer, move it to the fp registers if possible.
unsigned FP = ARMMoveToFPReg(MVT::f32, Op);
unsigned FP = ARMMoveToFPReg(MVT::f32, SrcReg);
if (FP == 0) return false;
unsigned Opc;

96
llvm/test/CodeGen/ARM/fast-isel-conversion.ll Normal file
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@ -0,0 +1,96 @@
; RUN: llc < %s -O0 -fast-isel-abort -relocation-model=dynamic-no-pic -mtriple=armv7-apple-darwin | FileCheck %s --check-prefix=ARM
; RUN: llc < %s -O0 -fast-isel-abort -relocation-model=dynamic-no-pic -mtriple=thumbv7-apple-darwin | FileCheck %s --check-prefix=THUMB
; Test sitofp
define void @sitofp_single_i32(i32 %a, float %b) nounwind ssp {
entry:
; ARM: sitofp_single_i32
; ARM: vmov s0, r0
; ARM: vcvt.f32.s32 s0, s0
; THUMB: sitofp_single_i32
; THUMB: vmov s0, r0
; THUMB: vcvt.f32.s32 s0, s0
%b.addr = alloca float, align 4
%conv = sitofp i32 %a to float
store float %conv, float* %b.addr, align 4
ret void
}
define void @sitofp_single_i16(i16 %a, float %b) nounwind ssp {
entry:
; ARM: sitofp_single_i16
; ARM: sxth r0, r0
; ARM: vmov s0, r0
; ARM: vcvt.f32.s32 s0, s0
; THUMB: sitofp_single_i16
; THUMB: sxth r0, r0
; THUMB: vmov s0, r0
; THUMB: vcvt.f32.s32 s0, s0
%b.addr = alloca float, align 4
%conv = sitofp i16 %a to float
store float %conv, float* %b.addr, align 4
ret void
}
define void @sitofp_single_i8(i8 %a) nounwind ssp {
entry:
; ARM: sitofp_single_i8
; ARM: sxtb r0, r0
; ARM: vmov s0, r0
; ARM: vcvt.f32.s32 s0, s0
; THUMB: sitofp_single_i8
; THUMB: sxtb r0, r0
; THUMB: vmov s0, r0
; THUMB: vcvt.f32.s32 s0, s0
%b.addr = alloca float, align 4
%conv = sitofp i8 %a to float
store float %conv, float* %b.addr, align 4
ret void
}
define void @sitofp_double_i32(i32 %a, double %b) nounwind ssp {
entry:
; ARM: sitofp_double_i32
; ARM: vmov s0, r0
; ARM: vcvt.f64.s32 d16, s0
; THUMB: sitofp_double_i32
; THUMB: vmov s0, r0
; THUMB: vcvt.f64.s32 d16, s0
%b.addr = alloca double, align 8
%conv = sitofp i32 %a to double
store double %conv, double* %b.addr, align 8
ret void
}
define void @sitofp_double_i16(i16 %a, double %b) nounwind ssp {
entry:
; ARM: sitofp_double_i16
; ARM: sxth r0, r0
; ARM: vmov s0, r0
; ARM: vcvt.f64.s32 d16, s0
; THUMB: sitofp_double_i16
; THUMB: sxth r0, r0
; THUMB: vmov s0, r0
; THUMB: vcvt.f64.s32 d16, s0
%b.addr = alloca double, align 8
%conv = sitofp i16 %a to double
store double %conv, double* %b.addr, align 8
ret void
}
define void @sitofp_double_i8(i8 %a, double %b) nounwind ssp {
entry:
; ARM: sitofp_double_i8
; ARM: sxtb r0, r0
; ARM: vmov s0, r0
; ARM: vcvt.f64.s32 d16, s0
; THUMB: sitofp_double_i8
; THUMB: sxtb r0, r0
; THUMB: vmov s0, r0
; THUMB: vcvt.f64.s32 d16, s0
%b.addr = alloca double, align 8
%conv = sitofp i8 %a to double
store double %conv, double* %b.addr, align 8
ret void
}