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re PR debug/48204 (ICE: in decimal_to_decnumber, at dfp.c:115 with -fno-tree-ccp -fno-tree-dominator-opts -fno-tree-fre -g)

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PR debug/48204
	* simplify-rtx.c (simplify_const_unary_operation): Call
	real_convert when changing mode class with FLOAT_EXTEND.

	* gcc.dg/dfp/pr48204.c: New test.

From-SVN: r171423
This commit is contained in:
Jakub Jelinek 2011-03-24 19:58:58 +01:00 committed by Jakub Jelinek
parent 50e373331f
commit 6f0c9f06a5
4 changed files with 27 additions and 2 deletions
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6
gcc/ChangeLog
View File

@ -1,3 +1,9 @@
2011-03-24 Jakub Jelinek <jakub@redhat.com>
PR debug/48204
* simplify-rtx.c (simplify_const_unary_operation): Call
real_convert when changing mode class with FLOAT_EXTEND.
2011-03-24 Nick Clifton <nickc@redhat.com>
* config/rx/rx.h (LABEL_ALIGN_FOR_BARRIER): Define.

8
gcc/simplify-rtx.c
View File

@ -1526,7 +1526,8 @@ simplify_const_unary_operation (enum rtx_code code, enum machine_mode mode,
}
else if (GET_CODE (op) == CONST_DOUBLE
&& SCALAR_FLOAT_MODE_P (mode))
&& SCALAR_FLOAT_MODE_P (mode)
&& SCALAR_FLOAT_MODE_P (GET_MODE (op)))
{
REAL_VALUE_TYPE d, t;
REAL_VALUE_FROM_CONST_DOUBLE (d, op);
@ -1549,7 +1550,10 @@ simplify_const_unary_operation (enum rtx_code code, enum machine_mode mode,
d = real_value_truncate (mode, d);
break;
case FLOAT_EXTEND:
/* All this does is change the mode. */
/* All this does is change the mode, unless changing
mode class. */
if (GET_MODE_CLASS (mode) != GET_MODE_CLASS (GET_MODE (op)))
real_convert (&d, mode, &d);
break;
case FIX:
real_arithmetic (&d, FIX_TRUNC_EXPR, &d, NULL);

5
gcc/testsuite/ChangeLog
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@ -1,3 +1,8 @@
2011-03-24 Jakub Jelinek <jakub@redhat.com>
PR debug/48204
* gcc.dg/dfp/pr48204.c: New test.
2011-03-24 Steve Ellcey <sje@cup.hp.com>
PR target/48209

10
gcc/testsuite/gcc.dg/dfp/pr48204.c Normal file
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@ -0,0 +1,10 @@
/* PR debug/48204 */
/* { dg-do compile } */
/* { dg-options "-O -fno-tree-ccp -fno-tree-dominator-opts -fno-tree-fre -g" } */
void
foo (void)
{
float cf = 3.0f;
_Decimal64 d64 = cf;
}