digitalmars.D.bugs - [Issue 23418] New: double argument is passed on stack, but assumed
- d-bugmail puremagic.com (42/42) Oct 15 2022 https://issues.dlang.org/show_bug.cgi?id=23418
https://issues.dlang.org/show_bug.cgi?id=23418 Issue ID: 23418 Summary: double argument is passed on stack, but assumed to be in XMM0 register Product: D Version: D2 Hardware: x86 OS: Linux Status: NEW Severity: normal Priority: P1 Component: dmd Assignee: nobody puremagic.com Reporter: bugzilla digitalmars.com bool test_eqz(double x) { return x == 0; } int abc(int i) { test_eqz(123); return 2; } compiled with -m32 -O yields: _D5test38test_eqzFfZb: xorps XMM1,XMM1 ucomiss XMM1,XMM0 <--- XMM0 should be loaded from stack! jp LA je LE LA: xor EAX,EAX jmp short L13 LE: mov EAX,1 L13: ret 4 <--- correctly popped from stack add [EAX],AL _D5test33abcFiZi: sub ESP,018h movss XMM0,_D5test312__ModuleInfoZ SYM32[03h] sub ESP,4 movss [ESP],XMM0 <--- XMMO passed on stack! call _D5test38test_eqzFfZb PC32 add ESP,0Ch add ESP,0Ch mov EAX,2 ret --
Oct 15 2022