https://bugs.llvm.org/show_bug.cgi?id=46918
Bug ID: 46918
Summary: MIR fails verifier when regalloc produces error:
inline assembly requires more registers than available
Product: libraries
Version: trunk
Hardware: PC
OS: Linux
Status: NEW
Severity: enhancement
Priority: P
Component: Register Allocator
Assignee: [email protected]
Reporter: [email protected]
CC: [email protected], [email protected]
Created attachment 23793
--> https://bugs.llvm.org/attachment.cgi?id=23793&action=edit
Testcase
The register allocator currently produces MIR that fails the verifier when it
can't handle inline assembly. It produces the user error in the context, and
then has to produce something and keep going. The MIR should pass the verifier
so the compilation can reach the end successfully. I'm not sure whether it
would be better to hack up the code to avoid failing the verifier, or to change
the verifier check for the error and disable the liveness checks.
llc -mtriple=amdgcn-amd-amdhsa -mcpu=gfx900 -verify-machineinstrs
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