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re PR middle-end/77377 (c-c++-common/pr59037.c ICEs with -fpic -msse on i686) 

PR middle-end/77377
	* simplify-rtx.c (avoid_constant_pool_reference): For out of bounds
	constant pool reference return x instead of c.

	* gcc.target/i386/pr77377.c: New test.

From-SVN: r239854
This commit is contained in:
Jakub Jelinek 2016-08-30 08:45:56 +02:00 committed by Jakub Jelinek
parent ab8348325f
commit 26122e2d8a
4 changed files with 18 additions and 4 deletions
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6
gcc/ChangeLog
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@ -1,3 +1,9 @@
2016-08-30 Jakub Jelinek <jakub@redhat.com>
PR middle-end/77377
* simplify-rtx.c (avoid_constant_pool_reference): For out of bounds
constant pool reference return x instead of c.
2016-08-29 Segher Boessenkool <segher@kernel.crashing.org>
* config/rs6000/rs6000.h (CALL_REALLY_USED_REGISTERS): Do not

7
gcc/simplify-rtx.c
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@ -251,15 +251,14 @@ avoid_constant_pool_reference (rtx x)
/* If we're accessing the constant in a different mode than it was
originally stored, attempt to fix that up via subreg simplifications.
If that fails we have no choice but to return the original memory. */
if ((offset != 0 || cmode != GET_MODE (x))
&& offset >= 0 && offset < GET_MODE_SIZE (cmode))
if (offset == 0 && cmode == GET_MODE (x))
return c;
else if (offset >= 0 && offset < GET_MODE_SIZE (cmode))
{
rtx tem = simplify_subreg (GET_MODE (x), c, cmode, offset);
if (tem && CONSTANT_P (tem))
return tem;
}
else
return c;
}
return x;

3
gcc/testsuite/ChangeLog
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@ -1,5 +1,8 @@
2016-08-30 Jakub Jelinek <jakub@redhat.com>
PR middle-end/77377
* gcc.target/i386/pr77377.c: New test.
PR debug/77389
* g++.dg/debug/dwarf2/template-params-12f.C: Pass -gno-strict-dwarf
in dg-options.

6
gcc/testsuite/gcc.target/i386/pr77377.c Normal file
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@ -0,0 +1,6 @@
/* PR middle-end/77377 */
/* { dg-do compile } */
/* { dg-options "-O3 -msse" } */
/* { dg-additional-options "-fpic" { target fpic } } */
#include "../../c-c++-common/pr59037.c"