mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2025-01-31 20:51:52 +01:00
4b72972edf
Register coalescer fails for the test in the patch with the assertion in
JoinVals::ConflictResolution `DefMI != nullptr'. It attempts to join
live intervals for two adjacent instructions and erase the copy:
%2:vreg_256 = COPY %1
%3:vreg_256 = COPY killed %1
The LI needs to be adjusted to kill subrange for the erased instruction
and extend the subrange of the original def. That was done for the main
interval only but not for the subrange. As a result subrange had a VNI
pointing to the erased slot resulting in the above failure.
Differential Revision: https://reviews.llvm.org/D62162
llvm-svn: 361293
40 lines
1.2 KiB
YAML
40 lines
1.2 KiB
YAML
# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
|
|
# RUN: llc -march=amdgcn -mcpu=gfx900 -verify-machineinstrs -run-pass=simple-register-coalescing -o - %s | FileCheck -check-prefix=GCN %s
|
|
|
|
# Test used to crash with message:
|
|
# JoinVals::ConflictResolution (anonymous namespace)::JoinVals::analyzeValue(unsigned int, (anonymous namespace)::JoinVals &): Assertion `DefMI != nullptr' failed
|
|
|
|
---
|
|
name: test
|
|
tracksRegLiveness: true
|
|
body: |
|
|
; GCN-LABEL: name: test
|
|
; GCN: bb.0:
|
|
; GCN: successors: %bb.2(0x80000000)
|
|
; GCN: undef %1.sub0:vreg_128 = IMPLICIT_DEF
|
|
; GCN: %1.sub1:vreg_128 = IMPLICIT_DEF
|
|
; GCN: S_BRANCH %bb.2
|
|
; GCN: bb.1:
|
|
; GCN: successors: %bb.2(0x80000000)
|
|
; GCN: [[DEF:%[0-9]+]]:vreg_128 = IMPLICIT_DEF
|
|
; GCN: bb.2:
|
|
; GCN: [[DEF]].sub2:vreg_128 = COPY undef %3:sreg_32
|
|
; GCN: S_ENDPGM 0, implicit [[DEF]]
|
|
bb.0:
|
|
undef %0.sub0:vreg_128 = IMPLICIT_DEF
|
|
%0.sub1:vreg_128 = IMPLICIT_DEF
|
|
%1:vreg_128 = COPY %0
|
|
%2:vreg_128 = COPY killed %0
|
|
S_BRANCH %bb.2
|
|
|
|
bb.1:
|
|
%1:vreg_128 = COPY killed undef %1
|
|
|
|
bb.2:
|
|
%1.sub2:vreg_128 = COPY undef %3:sreg_32
|
|
%2:vreg_128 = COPY killed %1
|
|
%4:vreg_128 = COPY killed %2
|
|
S_ENDPGM 0, implicit killed %4
|
|
|
|
...
|