| Issue |
170552
|
| Summary |
[AMDGPU] "Invalid VOPD pair was created" error with V_FMAMK_F32
|
| Labels |
new issue
|
| Assignees |
|
| Reporter |
jayfoad
|
If I add this test case:
```
diff --git a/llvm/test/CodeGen/AMDGPU/vopd-combine-gfx1250.mir b/llvm/test/CodeGen/AMDGPU/vopd-combine-gfx1250.mir
index b05edd046b87..93648f9dc0aa 100644
--- a/llvm/test/CodeGen/AMDGPU/vopd-combine-gfx1250.mir
+++ b/llvm/test/CodeGen/AMDGPU/vopd-combine-gfx1250.mir
@@ -4481,3 +4481,12 @@ body: |
$vgpr3 = V_MOV_B32_e32 0, implicit $exec
$vgpr0 = V_ADD_F32_e64_dpp $vgpr0, 0, $vgpr2, 0, $vgpr1, 0, 1, 1, 15, 15, 1, implicit $mode, implicit $exec
...
+
+---
+name: vopd_no_combine_fmamk_src1
+tracksRegLiveness: true
+body: |
+ bb.0:
+ $vgpr142 = V_FMAMK_F32 $vgpr377, 1069066811, $vgpr142, implicit $mode, implicit $exec
+ $vgpr145 = V_FMAC_F32_e32 1069066811, $vgpr366, $vgpr145, implicit $mode, implicit $exec
+...
```
it fails with:
```
Invalid VOPD pair was created
UNREACHABLE executed at /home/jayfoad2/git/llvm-project/llvm/lib/Target/AMDGPU/AMDGPULowerVGPREncoding.cpp:213!
```
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