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48 lines
2.5 KiB
48 lines
2.5 KiB
# RUN: llc -mtriple=s390x-linux-gnu -mcpu=z14 -start-before=greedy %s -o - \
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# RUN: | FileCheck %s
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#
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# Test that folding does not occur if it would introduce a clobbering of a live CC.
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--- |
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define void @fun0(double %arg0, double %arg1, double* %Dst) { ret void }
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...
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# CHECK-LABEL: fun0:
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# CHECK: ld %f1, 160(%r15) # 8-byte Folded Reload
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# CHECK-NEXT: wfadb %f0, %f0, %f1
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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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registers:
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- { id: 0, class: fp64bit }
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- { id: 1, class: fp64bit }
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- { id: 2, class: addr64bit }
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- { id: 3, class: vr64bit }
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- { id: 4, class: gr64bit }
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liveins:
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- { reg: '$f0d', virtual-reg: '%0' }
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- { reg: '$f2d', virtual-reg: '%1' }
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- { reg: '$r2d', virtual-reg: '%2' }
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frameInfo:
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maxAlignment: 1
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machineFunctionInfo: {}
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body: |
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bb.0:
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liveins: $f0d, $f2d, $r2d
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%2:addr64bit = COPY $r2d
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%1:fp64bit = COPY $f2d
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%0:fp64bit = COPY $f0d
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CDBR %0, %1, implicit-def $cc, implicit $fpc
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INLINEASM &"", 1, 12, implicit-def dead early-clobber $r0d, 12, implicit-def dead early-clobber $r1d, 12, implicit-def dead early-clobber $r2d, 12, implicit-def dead early-clobber $r3d, 12, implicit-def dead early-clobber $r4d, 12, implicit-def dead early-clobber $r5d, 12, implicit-def dead early-clobber $r6d, 12, implicit-def dead early-clobber $r7d, 12, implicit-def dead early-clobber $r8d, 12, implicit-def dead early-clobber $r9d, 12, implicit-def dead early-clobber $r10d, 12, implicit-def dead early-clobber $r11d, 12, implicit-def dead early-clobber $r12d, 12, implicit-def dead early-clobber $r13d, 12, implicit-def dead early-clobber $r14d, 12, implicit-def dead early-clobber $f1d, 12, implicit-def dead early-clobber $f2d, 12, implicit-def dead early-clobber $f3d, 12, implicit-def dead early-clobber $f4d, 12, implicit-def dead early-clobber $f5d, 12, implicit-def dead early-clobber $f6d, 12, implicit-def dead early-clobber $f7d, 12, implicit-def dead early-clobber $f8d, 12, implicit-def dead early-clobber $f9d, 12, implicit-def dead early-clobber $f10d, 12, implicit-def dead early-clobber $f11d, 12, implicit-def dead early-clobber $f12d, 12, implicit-def dead early-clobber $f13d, 12, implicit-def dead early-clobber $f14d, 12, implicit-def dead early-clobber $f14d, 12, implicit-def dead early-clobber $f15d
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%3:vr64bit = nofpexcept WFADB %0, %1, implicit $fpc
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%4:gr64bit = LGHI 0
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%4:gr64bit = LOCGHI %4, 1, 14, 8, implicit killed $cc
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VST64 %3, %2, 0, $noreg :: (store 8 into %ir.Dst)
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Return
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...
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