Files
clang-p2996/llvm/test/CodeGen/AMDGPU/liveness.mir
Fangrui Song 9e9907f1cf [AMDGPU,test] Change llc -march= to -mtriple= (#75982)
Similar to 806761a762.

For IR files without a target triple, -mtriple= specifies the full
target triple while -march= merely sets the architecture part of the
default target triple, leaving a target triple which may not make sense,
e.g. amdgpu-apple-darwin.

Therefore, -march= is error-prone and not recommended for tests without
a target triple. The issue has been benign as we recognize
$unknown-apple-darwin as ELF instead of rejecting it outrightly.

This patch changes AMDGPU tests to not rely on the default
OS/environment components. Tests that need fixes are not changed:

```
  LLVM :: CodeGen/AMDGPU/fabs.f64.ll
  LLVM :: CodeGen/AMDGPU/fabs.ll
  LLVM :: CodeGen/AMDGPU/floor.ll
  LLVM :: CodeGen/AMDGPU/fneg-fabs.f64.ll
  LLVM :: CodeGen/AMDGPU/fneg-fabs.ll
  LLVM :: CodeGen/AMDGPU/r600-infinite-loop-bug-while-reorganizing-vector.ll
  LLVM :: CodeGen/AMDGPU/schedule-if-2.ll
```
2024-01-16 21:54:58 -08:00

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# RUN: llc -mtriple=amdgcn -run-pass liveintervals -verify-machineinstrs -o /dev/null -debug-only=regalloc %s 2>&1 | FileCheck %s
# REQUIRES: asserts
# We currently maintain a main liveness range which operates like a superset of
# all subregister liveranges. We may need to create additional SSA values at
# merge point in this main liverange even though none of the subregister
# liveranges needed it.
#
# Should see three distinct value numbers:
# CHECK: %0 [{{.*}}:0)[{{.*}}:1)[{{.*}}:2) 0@{{[0-9]+[Berd]}} 1@{{[0-9]+[Berd]}} 2@{{[0-9]+B-phi}}
--- |
define amdgpu_kernel void @test0() { ret void }
...
---
name: test0
registers:
- { id: 0, class: sreg_64 }
body: |
bb.0:
S_NOP 0, implicit-def undef %0.sub0
S_CBRANCH_VCCNZ %bb.1, implicit undef $vcc
S_BRANCH %bb.2
bb.1:
S_NOP 0, implicit-def %0.sub1
S_NOP 0, implicit %0.sub1
S_BRANCH %bb.2
bb.2:
S_NOP 0, implicit %0.sub0
...