[PATCH v1 0/1] arm: avoid UB in arm_gen_constant [PR123390]

[Richard Earnshaw via Sourceware Forge]

Hi gcc-patches mailing list,
Richard Earnshaw <rearnsha@arm.com> has requested that the following forgejo pull request
be published on the mailing list.

Created on: 2026-01-06 14:18:46+00:00
Latest update: 2026-01-06 14:19:45+00:00
Changes: 1 changed files, 39 additions, 28 deletions
Head revision: rearnsha/gcc-TEST ref gen-const-fix commit ed82cdb402b034a5284e9e5ba313a936953dff7f
Base revision: gcc/gcc-TEST ref master commit 56dd47c073cabf00771280273bae133a4864c9f6 r16-6519-g56dd47c073cabf
Merge base: 56dd47c073cabf00771280273bae133a4864c9f6
Full diff url: https://forge.sourceware.org/gcc/gcc-TEST/pulls/133.diff
Discussion:  https://forge.sourceware.org/gcc/gcc-TEST/pulls/133
Requested Reviewers:

To avoid having potentially UB in arm_gen_const, use the macros
from hwint.h to correctly type literal values.

gcc/ChangeLog:

	PR target/123390
	* config/arm/arm.cc (arm_gen_constant): Fix types of HWI literals.
	(arm_const_double_prefer_rsbs_rsc): Likewise.

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Changed files:
- M: gcc/config/arm/arm.cc


Richard Earnshaw (1):
  arm: avoid UB in arm_gen_constant [PR123390]

 gcc/config/arm/arm.cc | 67 +++++++++++++++++++++++++------------------
 1 file changed, 39 insertions(+), 28 deletions(-)

-- 
2.52.0