# RUN: llc -mtriple=x86_64-- -run-pass=regallocfast -o - %s | FileCheck %s # Check that fastregalloc does not displace register assigned to tied def when # RegMask operand is present. STATEPOINT is an example of such instruction. # Tied def/use must be assigned to the same register. --- name: test_relocate tracksRegLiveness: true body: | bb.0.entry: liveins: $rdi ; CHECK: renamable [[REG:\$[a-z0-9]+]] = STATEPOINT 0, 0, 0, target-flags(x86-plt) 0, 2, 0, 2, 0, 2, 0, 2, 1, renamable [[REG]](tied-def 0) %1:gr64 = COPY $rdi ADJCALLSTACKDOWN64 0, 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp %1:gr64 = STATEPOINT 0, 0, 0, target-flags(x86-plt) 0, 2, 0, 2, 0, 2, 0, 2, 1, %1(tied-def 0), 2, 0, 2, 1, 0, 0, csr_64, implicit-def $rsp, implicit-def $ssp ADJCALLSTACKUP64 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp $rax = COPY %1 RET 0, killed $rax ... # Same as above but with multiple RegMask operands per instruction. # These regmasks have no real meaning and chosen to allow only single register to be assignable ($r12) --- name: test_relocate_multi_regmasks tracksRegLiveness: true body: | bb.0.entry: liveins: $rdi ; CHECK: renamable $r12 = STATEPOINT 0, 0, 0, target-flags(x86-plt) 0, 2, 0, 2, 0, 2, 0, 2, 1, renamable $r12(tied-def 0) %1:gr64 = COPY $rdi ADJCALLSTACKDOWN64 0, 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp %1:gr64 = STATEPOINT 0, 0, 0, target-flags(x86-plt) 0, 2, 0, 2, 0, 2, 0, 2, 1, %1(tied-def 0), 2, 0, 2, 1, 0, 0, csr_64_rt_allregs, csr_64_hhvm, implicit-def $rsp, implicit-def $ssp ADJCALLSTACKUP64 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp $rax = COPY %1 RET 0, killed $rax ...