derek.holloway
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46 lines
1.4 KiB
LLVM
46 lines
1.4 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
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; RUN: llc -verify-machineinstrs < %s -mtriple=powerpc64-unknown-linux-gnu -mcpu=pwr7 -mattr=+vsx -disable-ppc-vsx-fma-mutation=false | FileCheck %s
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declare double @llvm.sqrt.f64(double)
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; Test several VSX FMA mutation opportunities.
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; This is reasonable transformation since it eliminates extra register copy.
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define double @foo3_fmf(double %a) nounwind {
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; CHECK-LABEL: foo3_fmf:
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; CHECK: # %bb.0:
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; CHECK-NEXT: xstsqrtdp 0, 1
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; CHECK-NEXT: bc 12, 2, .LBB0_2
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; CHECK-NEXT: # %bb.1:
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; CHECK-NEXT: vspltisw 2, -3
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; CHECK-NEXT: xsrsqrtedp 0, 1
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; CHECK-NEXT: addis 3, 2, .LCPI0_0@toc@ha
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; CHECK-NEXT: xvcvsxwdp 3, 34
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; CHECK-NEXT: xsmuldp 2, 1, 0
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; CHECK-NEXT: fmr 4, 3
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; CHECK-NEXT: xsmaddadp 4, 2, 0
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; CHECK-NEXT: lfs 2, .LCPI0_0@toc@l(3)
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; CHECK-NEXT: xsmuldp 0, 0, 2
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; CHECK-NEXT: xsmuldp 0, 0, 4
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; CHECK-NEXT: xsmuldp 1, 1, 0
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; CHECK-NEXT: xsmaddadp 3, 1, 0
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; CHECK-NEXT: xsmuldp 0, 1, 2
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; CHECK-NEXT: xsmuldp 1, 0, 3
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; CHECK-NEXT: blr
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; CHECK-NEXT: .LBB0_2:
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; CHECK-NEXT: xssqrtdp 1, 1
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; CHECK-NEXT: blr
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%r = call contract reassoc afn ninf double @llvm.sqrt.f64(double %a)
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ret double %r
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}
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define double @foo3_safe(double %a) nounwind {
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; CHECK-LABEL: foo3_safe:
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; CHECK: # %bb.0:
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; CHECK-NEXT: xssqrtdp 1, 1
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; CHECK-NEXT: blr
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%r = call double @llvm.sqrt.f64(double %a)
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ret double %r
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}
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