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re PR tree-optimization/92891 (ice in decompose, at wide-int.h:984)

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PR tree-optimization/92891
	* builtins.c (gimple_call_alloc_size): Convert size to sizetype
	before returning it.

	* gcc.c-torture/compile/pr92891.c: New test.

From-SVN: r279205
This commit is contained in:
Jakub Jelinek 2019-12-11 00:49:40 +01:00 committed by Jakub Jelinek
parent 7436a1c675
commit a6ae300f9a
4 changed files with 28 additions and 1 deletions
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6
gcc/ChangeLog
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@ -1,3 +1,9 @@
2019-12-10 Jakub Jelinek <jakub@redhat.com>
PR tree-optimization/92891
* builtins.c (gimple_call_alloc_size): Convert size to sizetype
before returning it.
2019-12-10 Vladimir Makarov <vmakarov@redhat.com>
PR rtl-optimization/92796

2
gcc/builtins.c
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@ -3755,7 +3755,7 @@ gimple_call_alloc_size (gimple *stmt)
return NULL_TREE;
if (argidx2 > nargs && TREE_CODE (size) == INTEGER_CST)
return size;
return fold_convert (sizetype, size);
/* To handle ranges do the math in wide_int and return the product
of the upper bounds as a constant. Ignore anti-ranges. */

5
gcc/testsuite/ChangeLog
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@ -1,3 +1,8 @@
2019-12-10 Jakub Jelinek <jakub@redhat.com>
PR tree-optimization/92891
* gcc.c-torture/compile/pr92891.c: New test.
2019-12-10 Vladimir Makarov <vmakarov@redhat.com>
PR rtl-optimization/92796

16
gcc/testsuite/gcc.c-torture/compile/pr92891.c Normal file
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@ -0,0 +1,16 @@
/* PR tree-optimization/92891 */
int a, b;
char *foo (int) __attribute__((alloc_size(1)));
void
bar (void)
{
char *e = foo (2);
while (a)
{
if (b <= 0)
continue;
e[b] = 0;
}
}