https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108684
--- Comment #15 from CVS Commits ---
The releases/gcc-12 branch has been updated by Andrew Pinski
:
https://gcc.gnu.org/g:657e1e89d34b114ca47fe1f2c5366927c5850af7
commit r12-9239-g657e1e89d34b114ca47fe1f2c5366927c5850af7
Author: Andrew Pinski
Date: Tue Feb 7 23:09:40 2023 +
tree-optimization: [PR108684] ICE in verify_ssa due to
simple_dce_from_worklist
In simple_dce_from_worklist, we were removing an inline-asm which had a
vdef.
We should not be removing inline-asm which have a vdef as this code
does not check to the store.
This fixes that oversight. This was a latent bug exposed recently
by both VRP and removal of stores to static starting to use
simple_dce_from_worklist.
Backported after bootstrapped and tested on x86_64-linux-gnu with no
regressions.
PR tree-optimization/108684
gcc/ChangeLog:
* tree-ssa-dce.cc (simple_dce_from_worklist):
Check all ssa names and not just non-vdef ones
before accepting the inline-asm.
Call unlink_stmt_vdef on the statement before
removing it.
gcc/testsuite/ChangeLog:
* gcc.c-torture/compile/dce-inline-asm-1.c: New test.
* gcc.c-torture/compile/dce-inline-asm-2.c: New test.
* gcc.dg/tree-ssa/pr108684-1.c: New test.
co-authored-by: Andrew Macleod
(cherry picked from commit 6a5cb782d1486b378d70857c8efae558da0eb2cc)
