https://bugs.llvm.org/show_bug.cgi?id=49189
Bug ID: 49189
Summary: update_llc_test_checks.py doesn't report when a common
prefix has been lost
Product: tools
Version: trunk
Hardware: PC
OS: Windows NT
Status: NEW
Severity: enhancement
Priority: P
Component: support scripts
Assignee: [email protected]
Reporter: [email protected]
CC: [email protected], [email protected],
[email protected]
https://reviews.llvm.org/rGf32dc6bb42fd24517289fd1e3418994daa4fec20
; RUN: llc < %s -mtriple=x86_64-- -mattr=+avx2 | FileCheck %s
--check-prefixes=AVX,AVX2
; RUN: llc < %s -mtriple=x86_64-- -mattr=+avx2,+fast-variable-shuffle |
FileCheck %s --check-prefixes=AVX,AVX2
update_llc_test_checks.py didn't report that two AVX2 runs had conflicting
checks for all their common prefixes, which meant we lost ALL test coverage.
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