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[LegalizeTypes] Add SoftenFloatRes_FREEZE
Summary: This adds SoftenFloatRes_FREEZE. Reviewers: bkramer, JamesNagurne, craig.topper, efriedma Reviewed By: craig.topper Subscribers: AbigailLinden, hiraditya, llvm-commits Tags: #llvm Differential Revision: https://reviews.llvm.org/D76980
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@ -125,6 +125,7 @@ void DAGTypeLegalizer::SoftenFloatResult(SDNode *N, unsigned ResNo) {
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case ISD::ATOMIC_SWAP: R = BitcastToInt_ATOMIC_SWAP(N); break;
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case ISD::SELECT: R = SoftenFloatRes_SELECT(N); break;
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case ISD::SELECT_CC: R = SoftenFloatRes_SELECT_CC(N); break;
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case ISD::FREEZE: R = SoftenFloatRes_FREEZE(N); break;
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case ISD::STRICT_SINT_TO_FP:
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case ISD::STRICT_UINT_TO_FP:
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case ISD::SINT_TO_FP:
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@ -184,6 +185,12 @@ SDValue DAGTypeLegalizer::SoftenFloatRes_BITCAST(SDNode *N) {
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return BitConvertToInteger(N->getOperand(0));
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}
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SDValue DAGTypeLegalizer::SoftenFloatRes_FREEZE(SDNode *N) {
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EVT Ty = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0));
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return DAG.getNode(ISD::FREEZE, SDLoc(N), Ty,
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GetSoftenedFloat(N->getOperand(0)));
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}
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SDValue DAGTypeLegalizer::SoftenFloatRes_MERGE_VALUES(SDNode *N,
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unsigned ResNo) {
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SDValue Op = DisintegrateMERGE_VALUES(N, ResNo);
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@ -519,6 +519,7 @@ private:
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SDValue SoftenFloatRes_FP_ROUND(SDNode *N);
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SDValue SoftenFloatRes_FPOW(SDNode *N);
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SDValue SoftenFloatRes_FPOWI(SDNode *N);
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SDValue SoftenFloatRes_FREEZE(SDNode *N);
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SDValue SoftenFloatRes_FREM(SDNode *N);
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SDValue SoftenFloatRes_FRINT(SDNode *N);
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SDValue SoftenFloatRes_FROUND(SDNode *N);
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16
test/CodeGen/ARM/freeze-soften.ll
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16
test/CodeGen/ARM/freeze-soften.ll
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@ -0,0 +1,16 @@
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; RUN: llc -mtriple=thumbv8m.main-none-eabi %s -o - | FileCheck %s
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; Check that freeze operations on floating types are successfully softened.
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; CHECK-LABEL: sitofp_f32_i32:
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; CHECK: bl __aeabi_i2f
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define float @sitofp_f32_i32(i32 %x) #0 {
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%val = call float @llvm.experimental.constrained.sitofp.f32.i32(i32 %x, metadata !"round.tonearest", metadata !"fpexcept.strict") #0
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%val.fr = freeze float %val
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ret float %val.fr
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}
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attributes #0 = { strictfp }
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declare float @llvm.experimental.constrained.sitofp.f32.i32(i32, metadata, metadata)
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declare double @llvm.experimental.constrained.sitofp.f64.i32(i32, metadata, metadata)
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