https://gcc.gnu.org/bugzilla/show_bug.cgi?id=126320
--- Comment #8 from GCC Commits <cvs-commit at gcc dot gnu.org> --- The releases/gcc-16 branch has been updated by H.J. Lu <[email protected]>: https://gcc.gnu.org/g:b73ad535acaa2381bce1edb6f78b7dc65d0d5d1f commit r16-9406-gb73ad535acaa2381bce1edb6f78b7dc65d0d5d1f Author: H.J. Lu <[email protected]> Date: Mon Jul 20 07:57:31 2026 +0800 x86: Check register argument spill by callee commit b4c215b36d63e1c264d8c1bd5d34f9aef1bb8463 Author: H.J. Lu <[email protected]> Date: Sat Jun 28 06:27:25 2025 +0800 Adjust check for addressable misaligned stack argument ignores arguments passed on stack since caller is responsible to align the outgoing stack for arguments passed on stack. However, callee may spill a register argument: (set (mem/c:V2DI (plus:DI (reg/f:DI 7 sp) (const_int -16 [0xfffffffffffffff0])) [4 a1+0 S16 A128]) (reg:V2DI 20 xmm0 [ a1 ])) Update ix86_argument_passed_on_stack_p to check spill of register argument by callee. gcc/ PR target/126320 * config/i386/i386.cc (ix86_spill_register_argument_p): New function. (ix86_argument_passed_on_stack_p): Add a pattern argument. Call ix86_spill_register_argument_p to check spill of register argument by callee. (ix86_update_stack_alignment): Pass pat to ix86_argument_passed_on_stack_p. gcc/testsuite/ PR target/126320 * gcc.target/i386/pr126320.c: New test. Signed-off-by: H.J. Lu <[email protected]> Co-Authored-By: Uros Bizjak <[email protected]> (cherry picked from commit 26058933d2a23140131b3980908554fc6f8b1f41)
