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(expand_binop, expand_twoval_binop): If we are going to fail, remove any load from MEM we did due to -fforce-mem... 

(expand_binop, expand_twoval_binop): If we are going
to fail, remove any load from MEM we did due to -fforce-mem;
if the MEM was volatile, this will cause an extra load.

(expand_complex_abs): Likewise.
Correct use of variable LAST so it doesn't include the load
from MEM (to fix unrelated bug).

From-SVN: r2797
This commit is contained in:
Richard Stallman 1992-11-25 18:04:15 +00:00
parent 2ad701bad0
commit abd418d31f
1 changed files with 14 additions and 2 deletions
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16
gcc/optabs.c
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@ -280,6 +280,7 @@ expand_binop (mode, binoptab, op0, op1, target, unsignedp, methods)
|| binoptab->code == LSHIFTRT
|| binoptab->code == ROTATE
|| binoptab->code == ROTATERT);
rtx entry_last = get_last_insn ();
rtx last;
class = GET_MODE_CLASS (mode);
@ -1093,7 +1094,11 @@ expand_binop (mode, binoptab, op0, op1, target, unsignedp, methods)
if (! (methods == OPTAB_WIDEN || methods == OPTAB_LIB_WIDEN
|| methods == OPTAB_MUST_WIDEN))
return 0; /* Caller says, don't even try. */
{
/* Caller says, don't even try. */
delete_insns_since (entry_last);
return 0;
}
/* Compute the value of METHODS to pass to recursive calls.
Don't allow widening to be tried recursively. */
@ -1172,6 +1177,7 @@ expand_binop (mode, binoptab, op0, op1, target, unsignedp, methods)
}
}
delete_insns_since (entry_last);
return 0;
}
@ -1254,6 +1260,7 @@ expand_twoval_binop (binoptab, op0, op1, targ0, targ1, unsignedp)
enum machine_mode mode = GET_MODE (targ0 ? targ0 : targ1);
enum mode_class class;
enum machine_mode wider_mode;
rtx entry_last = get_last_insn ();
rtx last;
class = GET_MODE_CLASS (mode);
@ -1358,6 +1365,7 @@ expand_twoval_binop (binoptab, op0, op1, targ0, targ1, unsignedp)
}
}
delete_insns_since (entry_last);
return 0;
}
@ -1651,7 +1659,8 @@ expand_complex_abs (mode, op0, target, unsignedp)
enum mode_class class = GET_MODE_CLASS (mode);
enum machine_mode wider_mode;
register rtx temp;
rtx last = get_last_insn ();
rtx entry_last = get_last_insn ();
rtx last;
rtx pat;
/* Find the correct mode for the real and imaginary parts. */
@ -1670,6 +1679,8 @@ expand_complex_abs (mode, op0, target, unsignedp)
op0 = force_not_mem (op0);
}
last = get_last_insn ();
if (target)
target = protect_from_queue (target, 1);
@ -1819,6 +1830,7 @@ expand_complex_abs (mode, op0, target, unsignedp)
}
}
delete_insns_since (entry_last);
return 0;
}