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f3ab4849fb
Now that we have fneg, prefer using it over "fsub -0.0, ...". This helps in particular with strict FP tests, as fneg does not raise any exceptions.
23 lines
556 B
LLVM
23 lines
556 B
LLVM
; Test vector negation on z14.
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;
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; RUN: llc < %s -mtriple=s390x-linux-gnu -mcpu=z14 | FileCheck %s
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; Test a v4f32 negation.
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define <4 x float> @f1(<4 x float> %dummy, <4 x float> %val) {
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; CHECK-LABEL: f1:
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; CHECK: vflcsb %v24, %v26
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; CHECK: br %r14
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%ret = fneg <4 x float> %val
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ret <4 x float> %ret
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}
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; Test an f32 negation that uses vector registers.
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define float @f2(<4 x float> %val) {
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; CHECK-LABEL: f2:
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; CHECK: wflcsb %f0, %v24
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; CHECK: br %r14
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%scalar = extractelement <4 x float> %val, i32 0
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%ret = fneg float %scalar
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ret float %ret
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}
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