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varasm.c (immed_real_const_1): Don't elide special cases for nested functions.

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* varasm.c (immed_real_const_1): Don't elide special cases for
        nested functions.
        (clear_const_double_mem): Clear const_tiny_rtx too.

From-SVN: r44445
This commit is contained in:
Richard Henderson 2001-07-28 19:46:18 -07:00 committed by Richard Henderson
parent a20612aa8b
commit 6681bc1f10
2 changed files with 20 additions and 7 deletions
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6
gcc/ChangeLog
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@ -1,3 +1,9 @@
2001-07-28 Richard Henderson <rth@redhat.com>
* varasm.c (immed_real_const_1): Don't elide special cases for
nested functions.
(clear_const_double_mem): Clear const_tiny_rtx too.
2001-07-28 Richard Henderson <rth@redhat.com>
* dwarf2out.c (dw_val_class_offset): New.

21
gcc/varasm.c
View File

@ -1917,19 +1917,15 @@ immed_real_const_1 (d, mode)
u.d = d;
/* Detect special cases. But be careful we don't use a CONST_DOUBLE
that's from a parent function since it may be in its constant pool. */
if (REAL_VALUES_IDENTICAL (dconst0, d)
&& (cfun == 0 || decl_function_context (current_function_decl) == 0))
/* Detect special cases. */
if (REAL_VALUES_IDENTICAL (dconst0, d))
return CONST0_RTX (mode);
/* Check for NaN first, because some ports (specifically the i386) do not
emit correct ieee-fp code by default, and thus will generate a core
dump here if we pass a NaN to REAL_VALUES_EQUAL and if REAL_VALUES_EQUAL
does a floating point comparison. */
else if ((! REAL_VALUE_ISNAN (d) && REAL_VALUES_EQUAL (dconst1, d))
&& (cfun == 0
|| decl_function_context (current_function_decl) == 0))
else if (! REAL_VALUE_ISNAN (d) && REAL_VALUES_EQUAL (dconst1, d))
return CONST1_RTX (mode);
if (sizeof u == sizeof (HOST_WIDE_INT))
@ -1996,6 +1992,8 @@ void
clear_const_double_mem ()
{
register rtx r, next;
enum machine_mode mode;
int i;
for (r = const_double_chain; r; r = next)
{
@ -2004,6 +2002,15 @@ clear_const_double_mem ()
CONST_DOUBLE_MEM (r) = cc0_rtx;
}
const_double_chain = 0;
for (i = 0; i <= 2; i++)
for (mode = GET_CLASS_NARROWEST_MODE (MODE_FLOAT); mode != VOIDmode;
mode = GET_MODE_WIDER_MODE (mode))
{
r = const_tiny_rtx[i][(int) mode];
CONST_DOUBLE_CHAIN (r) = 0;
CONST_DOUBLE_MEM (r) = cc0_rtx;
}
}
/* Given an expression EXP with a constant value,