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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.
61 lines
2.3 KiB
LLVM
61 lines
2.3 KiB
LLVM
; Test vector negative multiply-and-add 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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declare <2 x double> @llvm.fma.v2f64(<2 x double>, <2 x double>, <2 x double>)
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declare <4 x float> @llvm.fma.v4f32(<4 x float>, <4 x float>, <4 x float>)
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; Test a v2f64 negative multiply-and-add.
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define <2 x double> @f1(<2 x double> %dummy, <2 x double> %val1,
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<2 x double> %val2, <2 x double> %val3) {
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; CHECK-LABEL: f1:
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; CHECK: vfnmadb %v24, %v26, %v28, %v30
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; CHECK: br %r14
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%ret = call <2 x double> @llvm.fma.v2f64 (<2 x double> %val1,
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<2 x double> %val2,
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<2 x double> %val3)
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%negret = fneg <2 x double> %ret
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ret <2 x double> %negret
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}
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; Test a v2f64 negative multiply-and-subtract.
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define <2 x double> @f2(<2 x double> %dummy, <2 x double> %val1,
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<2 x double> %val2, <2 x double> %val3) {
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; CHECK-LABEL: f2:
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; CHECK: vfnmsdb %v24, %v26, %v28, %v30
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; CHECK: br %r14
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%negval3 = fneg <2 x double> %val3
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%ret = call <2 x double> @llvm.fma.v2f64 (<2 x double> %val1,
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<2 x double> %val2,
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<2 x double> %negval3)
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%negret = fneg <2 x double> %ret
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ret <2 x double> %negret
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}
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; Test a v4f32 negative multiply-and-add.
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define <4 x float> @f3(<4 x float> %dummy, <4 x float> %val1,
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<4 x float> %val2, <4 x float> %val3) {
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; CHECK-LABEL: f3:
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; CHECK: vfnmasb %v24, %v26, %v28, %v30
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; CHECK: br %r14
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%ret = call <4 x float> @llvm.fma.v4f32 (<4 x float> %val1,
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<4 x float> %val2,
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<4 x float> %val3)
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%negret = fneg <4 x float> %ret
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ret <4 x float> %negret
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}
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; Test a v4f32 negative multiply-and-subtract.
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define <4 x float> @f4(<4 x float> %dummy, <4 x float> %val1,
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<4 x float> %val2, <4 x float> %val3) {
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; CHECK-LABEL: f4:
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; CHECK: vfnmssb %v24, %v26, %v28, %v30
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; CHECK: br %r14
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%negval3 = fneg <4 x float> %val3
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%ret = call <4 x float> @llvm.fma.v4f32 (<4 x float> %val1,
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<4 x float> %val2,
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<4 x float> %negval3)
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%negret = fneg <4 x float> %ret
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ret <4 x float> %negret
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}
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