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3a05b7b966
Replace single-lane (W... form) vector "multiply and add" and "multiply and subtract" instructions with equivalent floating point instructions whenever possible in SystemZShortenInst. Review: Ulrich Weigand Differential Revision: https://reviews.llvm.org/D76370
61 lines
2.3 KiB
YAML
61 lines
2.3 KiB
YAML
# RUN: llc -mtriple=s390x-linux-gnu -mcpu=z14 -start-before=postrapseudos %s -o - \
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# RUN: | FileCheck %s
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#
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# Test shortening of fused fp operations.
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--- |
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define double @fun0(double %f1, double %f2, double %acc) { ret double 0.0 }
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...
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# CHECK-LABEL: fun0:
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# CHECK: madbr %f0, %f4, %f2
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# CHECK-NEXT: wfmadb %f0, %f4, %v16, %f0
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# CHECK-NEXT: wfmadb %f0, %f4, %f0, %f2
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# CHECK-NEXT: maebr %f0, %f4, %f2
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# CHECK-NEXT: wfmasb %f0, %f4, %v16, %f0
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# CHECK-NEXT: wfmasb %f0, %f4, %f0, %f2
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# CHECK-NEXT: msdbr %f0, %f4, %f2
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# CHECK-NEXT: wfmsdb %f0, %f4, %v16, %f0
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# CHECK-NEXT: wfmsdb %f0, %f4, %f0, %f2
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# CHECK-NEXT: msebr %f0, %f4, %f2
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# CHECK-NEXT: wfmssb %f0, %f4, %v16, %f0
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# CHECK-NEXT: wfmssb %f0, %f4, %f0, %f2
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# CHECK-NEXT: br %r14
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---
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name: fun0
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alignment: 16
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tracksRegLiveness: true
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liveins:
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- { reg: '$f0d' }
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- { reg: '$f2d' }
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- { reg: '$f4d' }
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frameInfo:
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maxAlignment: 1
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maxCallFrameSize: 0
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fixedStack:
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- { id: 0, offset: -160, size: 8, alignment: 8 }
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machineFunctionInfo: {}
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body: |
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bb.0 (%ir-block.0):
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liveins: $f0d, $f2d, $f4d, $f16d
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renamable $f0d = nofpexcept WFMADB renamable $f4d, renamable $f2d, renamable $f0d, implicit $fpc
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renamable $f0d = nofpexcept WFMADB renamable $f4d, renamable $f16d, renamable $f0d, implicit $fpc
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renamable $f0d = nofpexcept WFMADB renamable $f4d, renamable $f0d, renamable $f2d, implicit $fpc
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renamable $f0s = nofpexcept WFMASB renamable $f4s, renamable $f2s, renamable $f0s, implicit $fpc
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renamable $f0s = nofpexcept WFMASB renamable $f4s, renamable $f16s, renamable $f0s, implicit $fpc
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renamable $f0s = nofpexcept WFMASB renamable $f4s, renamable $f0s, renamable $f2s, implicit $fpc
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renamable $f0d = nofpexcept WFMSDB renamable $f4d, renamable $f2d, renamable $f0d, implicit $fpc
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renamable $f0d = nofpexcept WFMSDB renamable $f4d, renamable $f16d, renamable $f0d, implicit $fpc
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renamable $f0d = nofpexcept WFMSDB renamable $f4d, renamable $f0d, renamable $f2d, implicit $fpc
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renamable $f0s = nofpexcept WFMSSB renamable $f4s, renamable $f2s, renamable $f0s, implicit $fpc
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renamable $f0s = nofpexcept WFMSSB renamable $f4s, renamable $f16s, renamable $f0s, implicit $fpc
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renamable $f0s = nofpexcept WFMSSB renamable $f4s, renamable $f0s, renamable $f2s, implicit $fpc
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Return implicit $f0d
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...
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