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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.
39 lines
1.4 KiB
LLVM
39 lines
1.4 KiB
LLVM
; Test strict vector multiply-and-add.
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;
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; RUN: llc < %s -mtriple=s390x-linux-gnu -mcpu=z13 | FileCheck %s
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declare <2 x double> @llvm.experimental.constrained.fma.v2f64(<2 x double>, <2 x double>, <2 x double>, metadata, metadata)
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; Test a v2f64 multiply-and-add.
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define <2 x double> @f4(<2 x double> %dummy, <2 x double> %val1,
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<2 x double> %val2, <2 x double> %val3) #0 {
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; CHECK-LABEL: f4:
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; CHECK: vfmadb %v24, %v26, %v28, %v30
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; CHECK: br %r14
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%ret = call <2 x double> @llvm.experimental.constrained.fma.v2f64 (
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<2 x double> %val1,
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<2 x double> %val2,
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<2 x double> %val3,
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metadata !"round.dynamic",
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metadata !"fpexcept.strict") #0
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ret <2 x double> %ret
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}
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; Test a v2f64 multiply-and-subtract.
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define <2 x double> @f5(<2 x double> %dummy, <2 x double> %val1,
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<2 x double> %val2, <2 x double> %val3) #0 {
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; CHECK-LABEL: f5:
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; CHECK: vfmsdb %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.experimental.constrained.fma.v2f64 (
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<2 x double> %val1,
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<2 x double> %val2,
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<2 x double> %negval3,
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metadata !"round.dynamic",
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metadata !"fpexcept.strict") #0
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ret <2 x double> %ret
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}
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attributes #0 = { strictfp }
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