https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110892
Bug ID: 110892
Summary: [14 Regression] Risc-V rvv testsuite failures caused
by conditional move costing
Product: gcc
Version: 14.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: ewlu at rivosinc dot com
Target Milestone: ---
Created attachment 55682
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=55682&action=edit
testsuite failures
Seeing 129 new failures on 36 rvv test cases.
Bisected using https://github.com/patrick-rivos/riscv-gnu-toolchain/issues/127
Confirmed to work:
https://gcc.gnu.org/git/?p=gcc.git;a=commit;h=cf58b896a26390c98ae5382377fcdf44e8ae209f
Confirmed to fail - rv32 newlib:
https://gcc.gnu.org/git/?p=gcc.git;a=commit;h=e15d0b6680d10d7666195e9db65581364ad5e5df
Confirmed to fail - other linux/newlib risc-v targets:
https://gcc.gnu.org/git/?p=gcc.git;a=commit;h=2d73f2eb80caf328bc4dd1324d475e7bf6b56837
Seems to be caused by
https://gcc.gnu.org/git/?p=gcc.git;a=commit;h=e15d0b6680d10d7666195e9db65581364ad5e5df
"[PATCH 3/5] [RISC-V] RISC-V Conditional Move costing [was:Generate Zicond
instruction for select pattern with condition eq or neq to 0]"
Most(all?) failures appear to be regex match failures.
