https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116738
--- Comment #19 from GCC Commits <cvs-commit at gcc dot gnu.org> --- The master branch has been updated by Jakub Jelinek <ja...@gcc.gnu.org>: https://gcc.gnu.org/g:624d3af025e820ede7ec4334f7a2d5d4731c99a9 commit r15-3728-g624d3af025e820ede7ec4334f7a2d5d4731c99a9 Author: Jakub Jelinek <ja...@redhat.com> Date: Fri Sep 20 09:14:29 2024 +0200 i386: Fix up _mm_min_ss etc. handling of zeros and NaNs [PR116738] min/max patterns for intrinsics which on x86 result in the second input operand if the two operands are both zeros or one or both of them are a NaN shouldn't use SMIN/SMAX RTL, because that is similarly to MIN_EXPR/MAX_EXPR undefined what will be the result in those cases. The following patch adds an expander which uses either a new pattern with UNSPEC_IEEE_M{AX,IN} or use the S{MIN,MAX} representation of the same. 2024-09-20 Uros Bizjak <ubiz...@gmail.com> Jakub Jelinek <ja...@redhat.com> PR target/116738 * config/i386/subst.md (mask_scalar_operand_arg34, mask_scalar_expand_op3, round_saeonly_scalar_mask_arg3): New subst attributes. * config/i386/sse.md (<sse>_vm<code><mode>3<mask_scalar_name><round_saeonly_scalar_name>): Change from define_insn to define_expand, rename the old define_insn to ... (*<sse>_vm<code><mode>3<mask_scalar_name><round_saeonly_scalar_name>): ... this. (<sse>_ieee_vm<ieee_maxmin><mode>3<mask_scalar_name><round_saeonly_scalar_name>): New define_insn. * gcc.target/i386/sse-pr116738.c: New test.
