https://gcc.gnu.org/g:1759734f1584a3db75c5a931bc1b144b7695b80a
commit r16-626-g1759734f1584a3db75c5a931bc1b144b7695b80a
Author: Andrew Pinski <quic_apin...@quicinc.com>
Date: Tue May 13 09:56:13 2025 -0700
gimple: allow fold_stmt without setting cfun in case of GIMPLE_COND folding
This is the followup mentioned in
https://gcc.gnu.org/pipermail/gcc-patches/2025-May/683444.html .
It adds the check for cfun before accessing function specific flags.
We handle the case where !cfun as conservative in that it the function
might throw.
gcc/ChangeLog:
* gimple-fold.cc (replace_stmt_with_simplification): Check cfun
before
accessing cfun.
Signed-off-by: Andrew Pinski <quic_apin...@quicinc.com>
Diff:
---
gcc/gimple-fold.cc | 10 ++++++----
1 file changed, 6 insertions(+), 4 deletions(-)
diff --git a/gcc/gimple-fold.cc b/gcc/gimple-fold.cc
index b8c1588365e2..009c5737ef96 100644
--- a/gcc/gimple-fold.cc
+++ b/gcc/gimple-fold.cc
@@ -6239,8 +6239,9 @@ replace_stmt_with_simplification (gimple_stmt_iterator
*gsi,
auto code = tree_code (res_op->code);
if (TREE_CODE_CLASS (code) == tcc_comparison
/* GIMPLE_CONDs condition may not throw. */
- && (!flag_exceptions
- || !cfun->can_throw_non_call_exceptions
+ && ((cfun
+ && (!flag_exceptions
+ || !cfun->can_throw_non_call_exceptions))
|| !operation_could_trap_p (code,
FLOAT_TYPE_P (TREE_TYPE (ops[0])),
false, NULL_TREE)))
@@ -6282,8 +6283,9 @@ replace_stmt_with_simplification (gimple_stmt_iterator
*gsi,
`(ne (cmp @0 @1) integer_zerop)` which creates a new expression
for the comparison. */
if (TREE_CODE_CLASS (code) == tcc_comparison
- && flag_exceptions
- && cfun->can_throw_non_call_exceptions
+ && (!cfun
+ || (flag_exceptions
+ && cfun->can_throw_non_call_exceptions))
&& operation_could_trap_p (code,
FLOAT_TYPE_P (TREE_TYPE (ops[0])),
false, NULL_TREE))
