https://sourceware.org/bugzilla/show_bug.cgi?id=34028
--- Comment #2 from Sourceware Commits <cvs-commit at gcc dot gnu.org> --- The master branch has been updated by Jan Beulich <[email protected]>: https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=925926577a460ef2fc170e0261f8b207a42bc0e0 commit 925926577a460ef2fc170e0261f8b207a42bc0e0 Author: Jan Beulich <[email protected]> Date: Fri Apr 17 08:06:39 2026 +0200 x86: refine special casing of insns with MSR as immediate PR gas/34028 i.op[].imms is legitimate to de-reference only when the operand actually is an immediate. The pointer happens to be non-NULL for most other operand kinds (i.e. a deref is UB, but would likely not fault), just not for memory operands without displacement. Leverage that the to-be-special-cased insns all only have just a single immediate, and leverage further that after the immediately preceding swapping of operands valid immediates will come first. Hence the conditional can be adjusted to satisfy the criteria above, and no loop is needed at all. With the conditional changed, leverage the property also in optimize_imm() itself, reducing the number of loop iterations. -- You are receiving this mail because: You are on the CC list for the bug.
