commit c6bf3266b1f0131f91a86eadfc88b0924607fe42
author Piotr Sobczak <Piotr.Sobczak@amd.com> Wed Feb 17 10:56:29 2021 +0100
committer Copybara-Service <copybara-worker@google.com> Fri Feb 19 03:08:28 2021 -0800
tree cab69ccfd994e67ef32d3295f257d91ea56d7277
parent 3ea0da9f2e02b398301d83afc42e9614ec101e0e

[AMDGPU] Add implicit vcc_lo on S_CBRANCH_VCCNZ in wave32

* Update skip-if-dead.ll with tests for wave32.
* Fix the crash in verifier in one newly enabled test by adding
  missing fixImplicitOperands in branch insertion code.

```
*** Bad machine code: Using an undefined physical register ***
- function:    test_kill_divergent_loop
- basic block: %bb.2 bb (0xad96308)
- instruction: S_CBRANCH_VCCNZ %bb.1, implicit $vcc_lo
- operand 1:   implicit $vcc_lo
LLVM ERROR: Found 1 machine code errors.
```

* Simplify "cbranch_kill" to not use interp instructions.

Reviewed By: arsenm

Differential Revision: https://reviews.llvm.org/D96793

GitOrigin-RevId: c72a63b4b06a0e96cecba36f6bc8df9f8ef81cce