blob: d849527d21162c8d4215debc9265e6ef3989ad96 [file] [log] [blame]
/* Verify that the scheduler does not discard the lexical block. */
/* { dg-do compile } */
/* { dg-options "-dA" } */
/* On MIPS targets that support conditional moves, the optimal
implementation of this function is:
l[wd] tmp,p
li $2,2
jr $31
movz $2,$0,tmp
After if-conversion, we have a conditional move into a pseudo P
followed a copy of P into the return register ($2). P is associated
with xyzzy, so if-conversion is behaving as expected, and has not lost
the variable association. The destination of the second instruction
is associated with the function return value. Combine then combines
these two instructions, removing the last use of P and xyzzy.
Everything is behaving as expected in this scenario, so we avoid
using conditional moves for this test.
Similar for MMIX, with the payload insns being "LDO $0,p; ZSNZ $0,$0,2". */
/* { dg-options "-dA -fno-if-conversion" { target mips*-*-* mmix-knuth-mmixware } } */
/* { dg-final { scan-assembler "xyzzy" } } */
long p;
long foo(void)
long xyzzy = 0;
if (p)
xyzzy = 2;
return xyzzy;