| # RUN: llc -run-pass=livevars,twoaddressinstruction -mtriple=x86_64-- -o - %s | FileCheck %s |
| --- |
| name: foo |
| tracksRegLiveness: true |
| body: | |
| bb.0: |
| liveins: $edi |
| |
| %0:gr32 = COPY killed $edi |
| %1:gr32 = COPY killed %0 |
| %4:gr32 = XOR32ri8 %1, 1, implicit-def dead $eflags |
| DBG_VALUE %4 |
| %5:gr32 = COPY %4 |
| PUSH32r killed %1, implicit-def $esp, implicit $esp |
| $eax = COPY killed %5 |
| RETQ implicit killed $eax |
| |
| ... |
| |
| # Verify that the DBG_VALUE instruction does not inhibit |
| # TwoAddressInstructionPass::rescheduleMIBelowKill optimization |
| |
| # CHECK: PUSH32r %1, implicit-def $esp, implicit $esp |
| # CHECK-NEXT: %2:gr32 = COPY killed %1 |
| # CHECK-NEXT: %2:gr32 = XOR32ri8 %2, 1, implicit-def dead $eflags |
| # CHECK-NEXT: DBG_VALUE %2 |
| # CHECK-NEXT: %3:gr32 = COPY killed %2 |