gnu /
gcc /
5b264a4b95b8f27c3c73892892d5c2030d3c8ea7 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.
(cherry picked from commit a4bbdec2be1c9f8fb49276b8a54ee86024ceac17)
2 files changed
