https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69899
David <gccbugzilla at limegreensocks dot com> changed:
What |Removed |Added
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CC| |gccbugzilla@limegreensocks.
| |com
--- Comment #2 from David <gccbugzilla at limegreensocks dot com> ---
To confirm the ice and to provide more details:
double a;
fn1(){ asm("" : "=t"(a) : "0u"(0)); } // replace_reg at reg-stack.c:687
fn2(){ asm("" : "=t"(a) : "0u"(0.0)); } // No ICE
fn3(){ asm("" : "=t"(a) : "u"(0.0)); } // change_stack at reg-stack.c:2522
fn1 is the OP's code. Changing the input to a float (0.0 vs 0) resolves the
first ICE, but removing the "0" from the input constraint throws another.
