| # RUN: llc -mtriple=s390x-linux-gnu -mcpu=z14 -start-before=greedy %s -o - \ |
| # RUN: | FileCheck %s |
| # |
| # Test that folding does not occur if it would introduce a clobbering of a live CC. |
| |
| --- | |
| define void @fun0(double %arg0, double %arg1, double* %Dst) { ret void } |
| |
| ... |
| |
| # CHECK-LABEL: fun0: |
| # CHECK: ld %f1, 160(%r15) # 8-byte Folded Reload |
| # CHECK-NEXT: wfadb %f0, %f0, %f1 |
| --- |
| name: fun0 |
| alignment: 16 |
| tracksRegLiveness: true |
| registers: |
| - { id: 0, class: fp64bit } |
| - { id: 1, class: fp64bit } |
| - { id: 2, class: addr64bit } |
| - { id: 3, class: vr64bit } |
| - { id: 4, class: gr64bit } |
| liveins: |
| - { reg: '$f0d', virtual-reg: '%0' } |
| - { reg: '$f2d', virtual-reg: '%1' } |
| - { reg: '$r2d', virtual-reg: '%2' } |
| frameInfo: |
| maxAlignment: 1 |
| machineFunctionInfo: {} |
| body: | |
| bb.0: |
| liveins: $f0d, $f2d, $r2d |
| |
| %2:addr64bit = COPY $r2d |
| %1:fp64bit = COPY $f2d |
| %0:fp64bit = COPY $f0d |
| CDBR %0, %1, implicit-def $cc, implicit $fpc |
| 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 |
| %3:vr64bit = nofpexcept WFADB %0, %1, implicit $fpc |
| %4:gr64bit = LGHI 0 |
| %4:gr64bit = LOCGHI %4, 1, 14, 8, implicit killed $cc |
| VST64 %3, %2, 0, $noreg :: (store 8 into %ir.Dst) |
| Return |
| |
| ... |
| |