| commit | a4bbdec2be1c9f8fb49276b8a54ee86024ceac17 | |
| author | Richard Biener <rguenther@suse.de> | |
| Tue, 11 Jun 2024 11:11:08 +0000 (11 13:11 +0200) | ||
| committer | Richard Biener <rguenth@gcc.gnu.org> | |
| Thu, 4 Jul 2024 06:57:54 +0000 (4 08:57 +0200) | ||
| tree | a46284182cbd1ebdf472bf7d575b1df268e444dd | treesnapshot (tar.gz zip) |
| parent | 699087a16591adfdf21228876b6c48dbcd353faa | commitdiff |
middle-end/115426 - wrong gimplification of "rm" asm output operand
When the operand is gimplified to an extract of a register or a
register we have to disallow memory as we otherwise fail to
gimplify it properly. Instead of
__asm__("" : "=rm" __imag <r>);
we want
__asm__("" : "=rm" D.2772);
_1 = REALPART_EXPR <r>;
r = COMPLEX_EXPR <_1, D.2772>;
otherwise SSA rewrite will fail and generate wrong code with 'r'
left bare in the asm output.
PR middle-end/115426
* gimplify.cc (gimplify_asm_expr): Handle "rm" output
constraint gimplified to a register (operation).
* gcc.dg/pr115426.c: New testcase.
When the operand is gimplified to an extract of a register or a
register we have to disallow memory as we otherwise fail to
gimplify it properly. Instead of
__asm__("" : "=rm" __imag <r>);
we want
__asm__("" : "=rm" D.2772);
_1 = REALPART_EXPR <r>;
r = COMPLEX_EXPR <_1, D.2772>;
otherwise SSA rewrite will fail and generate wrong code with 'r'
left bare in the asm output.
PR middle-end/115426
* gimplify.cc (gimplify_asm_expr): Handle "rm" output
constraint gimplified to a register (operation).
* gcc.dg/pr115426.c: New testcase.
| gcc/gimplify.cc | diffblobblamehistory | |
| gcc/testsuite/gcc.dg/pr115426.c | [new file with mode: 0644] | blob |