forked from OSchip/llvm-project
20 lines
603 B
YAML
20 lines
603 B
YAML
# RUN: llc -o - -mtriple=x86_64-- -run-pass=regallocfast %s | FileCheck %s
|
|
# Fast regalloc used to not collect physical register definitions
|
|
# before walking and assigning the virtual definition.
|
|
# Therefore it was possible for a virtual definition to end up
|
|
# using the same register as a later (in terms of operand list) physical
|
|
# register.
|
|
# Check this does not happen.
|
|
#
|
|
# PR41790
|
|
---
|
|
name: instruction_with_1virtreg_1physreg_defs
|
|
tracksRegLiveness: true
|
|
body: |
|
|
bb.0:
|
|
; CHECK-NOT: $rax = KILL implicit-def dead $rax
|
|
%0:gr64 = KILL implicit-def dead $rax
|
|
KILL killed %0
|
|
RET 0
|
|
...
|