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Remove r108639 now that it is handled by InstCombine instead. 

llvm-svn: 108688
This commit is contained in:
Owen Anderson 2010-07-19 08:10:24 +00:00
parent 32a58342ed
commit 9c271e2835
2 changed files with 0 additions and 30 deletions
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13
llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
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@ -4926,19 +4926,6 @@ SDValue DAGCombiner::visitFP_ROUND(SDNode *N) {
return DAG.getNode(ISD::FCOPYSIGN, N->getDebugLoc(), VT,
Tmp, N0.getOperand(1));
}
// (f32 fp_round (f64 sqrt (f64 fp_extend (f32)))) -> (f32 sqrt)
EVT VT0 = N0.getValueType();
if (VT == MVT::f32 &&
N0.getOpcode() == ISD::FSQRT && VT0 == MVT::f64) {
SDValue N1 = N0.getOperand(0);
EVT VT1 = N1.getValueType();
if (N1.getOpcode() == ISD::FP_EXTEND && VT1 == MVT::f64 &&
N1.getOperand(0).getValueType() == MVT::f32) {
return DAG.getNode(ISD::FSQRT, N->getDebugLoc(), MVT::f32,
N1.getOperand(0), N->getOperand(1));
}
}
return SDValue();
}

17
llvm/test/CodeGen/X86/2010-07-18-sqrt.ll
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@ -1,17 +0,0 @@
; RUN: llc < %s -march=x86 -mattr=+sse2 | 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"
target triple = "x86_64-apple-darwin10.0.0"
define float @foo(float %x) nounwind readnone ssp {
entry:
; CHECK-NOT: cvtss2sd
; CHECK-NOT: sqrtsd
; CHECK-NOT: cvtsd2ss
; CHECK: sqrtss
%conv = fpext float %x to double ; <double> [#uses=1]
%call = tail call double @sqrt(double %conv) nounwind ; <double> [#uses=1]
%conv1 = fptrunc double %call to float ; <float> [#uses=1]
ret float %conv1
}
declare double @sqrt(double) readnone