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Set ISD::FROUND to Expand by default for all types

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For most libm ISD nodes, TargetLoweringBase::initActions sets the default
scalar-type action to Expand, and leaves the vector-type action default as
Legal. This is not appropriate for the new ISD::FROUND node (which no backend
but PowerPC handles explicitly).

Fixes PR16842.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@188048 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Hal Finkel 2013-08-09 04:13:44 +00:00
parent 1c9cd021c8
commit 3d7f79a02e
2 changed files with 25 additions and 4 deletions
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7
lib/CodeGen/TargetLoweringBase.cpp
View File

@ -687,6 +687,9 @@ void TargetLoweringBase::initActions() {
// These operations default to expand.
setOperationAction(ISD::FGETSIGN, (MVT::SimpleValueType)VT, Expand);
setOperationAction(ISD::CONCAT_VECTORS, (MVT::SimpleValueType)VT, Expand);
// These library functions default to expand.
setOperationAction(ISD::FROUND, (MVT::SimpleValueType)VT, Expand);
}
// Most targets ignore the @llvm.prefetch intrinsic.
@ -711,7 +714,6 @@ void TargetLoweringBase::initActions() {
setOperationAction(ISD::FNEARBYINT, MVT::f16, Expand);
setOperationAction(ISD::FCEIL, MVT::f16, Expand);
setOperationAction(ISD::FRINT, MVT::f16, Expand);
setOperationAction(ISD::FROUND, MVT::f16, Expand);
setOperationAction(ISD::FTRUNC, MVT::f16, Expand);
setOperationAction(ISD::FLOG , MVT::f32, Expand);
setOperationAction(ISD::FLOG2, MVT::f32, Expand);
@ -722,7 +724,6 @@ void TargetLoweringBase::initActions() {
setOperationAction(ISD::FNEARBYINT, MVT::f32, Expand);
setOperationAction(ISD::FCEIL, MVT::f32, Expand);
setOperationAction(ISD::FRINT, MVT::f32, Expand);
setOperationAction(ISD::FROUND, MVT::f32, Expand);
setOperationAction(ISD::FTRUNC, MVT::f32, Expand);
setOperationAction(ISD::FLOG , MVT::f64, Expand);
setOperationAction(ISD::FLOG2, MVT::f64, Expand);
@ -733,7 +734,6 @@ void TargetLoweringBase::initActions() {
setOperationAction(ISD::FNEARBYINT, MVT::f64, Expand);
setOperationAction(ISD::FCEIL, MVT::f64, Expand);
setOperationAction(ISD::FRINT, MVT::f64, Expand);
setOperationAction(ISD::FROUND, MVT::f64, Expand);
setOperationAction(ISD::FTRUNC, MVT::f64, Expand);
setOperationAction(ISD::FLOG , MVT::f128, Expand);
setOperationAction(ISD::FLOG2, MVT::f128, Expand);
@ -744,7 +744,6 @@ void TargetLoweringBase::initActions() {
setOperationAction(ISD::FNEARBYINT, MVT::f128, Expand);
setOperationAction(ISD::FCEIL, MVT::f128, Expand);
setOperationAction(ISD::FRINT, MVT::f128, Expand);
setOperationAction(ISD::FROUND, MVT::f128, Expand);
setOperationAction(ISD::FTRUNC, MVT::f128, Expand);
// Default ISD::TRAP to expand (which turns it into abort).

22
test/CodeGen/X86/vec_round.ll Normal file
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@ -0,0 +1,22 @@
; RUN: llc -mcpu=nehalem -mtriple=x86_64-unknown-linux-gnu < %s | FileCheck %s
target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128"
target triple = "x86_64-unknown-linux-gnu"
declare void @use(<2 x double>)
; CHECK-LABEL: @test
; CHECK callq round
; Function Attrs: nounwind uwtable
define void @test() {
entry:
%tmp = call <2 x double> @llvm.round.v2f64(<2 x double> undef)
call void @use(<2 x double> %tmp)
ret void
}
; Function Attrs: nounwind readonly
declare <2 x double> @llvm.round.v2f64(<2 x double>) #0
attributes #0 = { nounwind readonly }