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re PR middle-end/45182 (Failed to build SPEC CPU 2000/2006)

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PR middle-end/45182
	* combine.c (make_compound_operation): Don't try to convert
	shifts into multiplications for modes that aren't SCALAR_INT_MODE_P.

	PR middle-end/45182
	* gcc.c-torture/compile/pr45182.c: New test.

From-SVN: r163057
This commit is contained in:
Bernd Schmidt 2010-08-10 12:48:16 +00:00 committed by Bernd Schmidt
parent fabe484df4
commit 5466d63d2d
4 changed files with 28 additions and 5 deletions
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6
gcc/ChangeLog
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@ -1,3 +1,9 @@
2010-08-10 Bernd Schmidt <bernds@codesourcery.com>
PR middle-end/45182
* combine.c (make_compound_operation): Don't try to convert
shifts into multiplications for modes that aren't SCALAR_INT_MODE_P.
2010-08-10 Richard Guenther <rguenther@suse.de>
* tree.h (get_object_alignment): Adjust prototype.

12
gcc/combine.c
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@ -7093,7 +7093,9 @@ make_compound_operation (rtx x, enum rtx_code in_code)
address, we stay there. If we have a comparison, set to COMPARE,
but once inside, go back to our default of SET. */
next_code = (code == MEM || code == PLUS || code == MINUS ? MEM
next_code = (code == MEM ? MEM
: ((code == PLUS || code == MINUS)
&& SCALAR_INT_MODE_P (mode)) ? MEM
: ((code == COMPARE || COMPARISON_P (x))
&& XEXP (x, 1) == const0_rtx) ? COMPARE
: in_code == COMPARE ? SET : in_code);
@ -7127,8 +7129,8 @@ make_compound_operation (rtx x, enum rtx_code in_code)
case PLUS:
lhs = XEXP (x, 0);
rhs = XEXP (x, 1);
lhs = make_compound_operation (lhs, MEM);
rhs = make_compound_operation (rhs, MEM);
lhs = make_compound_operation (lhs, next_code);
rhs = make_compound_operation (rhs, next_code);
if (GET_CODE (lhs) == MULT && GET_CODE (XEXP (lhs, 0)) == NEG
&& SCALAR_INT_MODE_P (mode))
{
@ -7157,8 +7159,8 @@ make_compound_operation (rtx x, enum rtx_code in_code)
case MINUS:
lhs = XEXP (x, 0);
rhs = XEXP (x, 1);
lhs = make_compound_operation (lhs, MEM);
rhs = make_compound_operation (rhs, MEM);
lhs = make_compound_operation (lhs, next_code);
rhs = make_compound_operation (rhs, next_code);
if (GET_CODE (rhs) == MULT && GET_CODE (XEXP (rhs, 0)) == NEG
&& SCALAR_INT_MODE_P (mode))
{

5
gcc/testsuite/ChangeLog
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@ -1,3 +1,8 @@
2010-08-10 Bernd Schmidt <bernds@codesourcery.com>
PR middle-end/45182
* gcc.c-torture/compile/pr45182.c: New test.
2010-08-09 Jason Merrill <jason@redhat.com>
PR c++/45236

10
gcc/testsuite/gcc.c-torture/compile/pr45182.c Normal file
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@ -0,0 +1,10 @@
typedef struct TypHeader {
struct TypHeader ** ptr;
} *TypHandle;
void PlainRange (TypHandle hdList, long lenList, long low, long inc)
{
long i;
for (i = 1; i <= lenList; i++ )
(((TypHandle*)((hdList)->ptr))[i] = (((TypHandle) (((long)(low + (i-1) *
inc) << 2) + 1))));
}