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Fix PR 71873 - ICE in push_reload 

Extend computation of subreg_in_class to constants and plus expressions 
inside SUBREGs, before recursively calling push_reload. SYMBOL_REFs are
also CONSTANT_P, so remove explicit handling of SYMBOL_REFs.

gcc/ChangeLog

	PR target/71873
	* reload.c (push_reload): Compute subreg_in_class for
	subregs of constants and plus expressions. Remove special
	handling of SYMBOL_REFs.

gcc/testsuite/ChangeLog

	PR target/71873
	* gcc.target/avr/pr71873.c: New test.

From-SVN: r239321
This commit is contained in:
Senthil Kumar Selvaraj 2016-08-10 12:35:57 +00:00 committed by Senthil Kumar Selvaraj
parent c4e9cff61c
commit 5250a5bbb0
4 changed files with 44 additions and 1 deletions
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7
gcc/ChangeLog
View File

@ -1,3 +1,10 @@
2016-08-10 Senthil Kumar Selvaraj <senthil_kumar.selvaraj@atmel.com>
PR target/71873
* reload.c (push_reload): Compute subreg_in_class for
subregs of constants and plus expressions. Remove special
handling of SYMBOL_REFs.
2016-08-10 Alan Modra <amodra@gmail.com>
PR target/71680

3
gcc/reload.c
View File

@ -1141,7 +1141,8 @@ push_reload (rtx in, rtx out, rtx *inloc, rtx *outloc,
SUBREG_BYTE (in),
GET_MODE (in)),
REGNO (SUBREG_REG (in)));
else if (GET_CODE (SUBREG_REG (in)) == SYMBOL_REF)
else if (CONSTANT_P (SUBREG_REG (in))
|| GET_CODE (SUBREG_REG (in)) == PLUS)
subreg_in_class = find_valid_class_1 (inmode,
GET_MODE (SUBREG_REG (in)),
rclass);

5
gcc/testsuite/ChangeLog
View File

@ -1,3 +1,8 @@
2016-08-10 Senthil Kumar Selvaraj <senthil_kumar.selvaraj@atmel.com>
PR target/71873
* gcc.target/avr/pr71873.c: New test.
2016-08-09 Martin Liska <mliska@suse.cz>
* g++.dg/gcov/gcov-dump-1.C: New test.

30
gcc/testsuite/gcc.target/avr/pr71873.c Normal file
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@ -0,0 +1,30 @@
/* { dg-do compile } */
/* { dg-options "-Os -fcaller-saves" } */
#include <stdint.h>
typedef struct {
uint8_t x;
uint32_t y;
} A;
A a;
extern int bar(int);
extern int foo (char *s, ...);
extern uint8_t param;
extern uint8_t h,m,s,ld,lm;
extern uint16_t d;
void gps_parse_string(int z)
{
while (bar(z))
{
switch (param)
{
case 0: foo("a", &h, &m, &s, &d); break;
case 1: foo("d", &ld, &lm, &a.y); break;
}
}
}