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Don't convert TImode in debug insn

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When converting V1TImode register in debug insn, check if it has been
converted to TImode already.

gcc/

	PR target/71801
	* config/i386/i386.c (timode_scalar_chain::fix_debug_reg_uses):
	Don't convert TImode in debug insn.

gcc/testsuite/

	PR target/71801
	* gcc.target/i386/pr71801.c: New test.

From-SVN: r238211
This commit is contained in:
H.J. Lu 2016-07-11 15:13:56 +00:00 • committed by H.J. Lu
parent 25b75a48d2
commit 92fa45b598
4 changed files with 36 additions and 0 deletions
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6
gcc/ChangeLog
View file

@ -1,3 +1,9 @@
2016-07-11 H.J. Lu <hongjiu.lu@intel.com>
PR target/71801
* config/i386/i386.c (timode_scalar_chain::fix_debug_reg_uses):
Don't convert TImode in debug insn.
2016-07-11 Bernd Edlinger <bernd.edlinger@hotmail.de>
Convert TYPE_ALIGN_OK to a TYPE_LANG_FLAG.

3
gcc/config/i386/i386.c
View file

@ -3814,6 +3814,9 @@ timode_scalar_chain::fix_debug_reg_uses (rtx reg)
continue;
gcc_assert (GET_CODE (val) == VAR_LOCATION);
rtx loc = PAT_VAR_LOCATION_LOC (val);
/* It may have been converted to TImode already. */
if (GET_MODE (loc) == TImode)
continue;
gcc_assert (REG_P (loc)
&& GET_MODE (loc) == V1TImode);
/* Convert V1TImode register, which has been updated by a SET

5
gcc/testsuite/ChangeLog
View file

@ -1,3 +1,8 @@
2016-07-11 H.J. Lu <hongjiu.lu@intel.com>
PR target/71801
* gcc.target/i386/pr71801.c: New test.
2016-07-11 Richard Biener <rguenther@suse.de>
PR tree-optimization/71816

22
gcc/testsuite/gcc.target/i386/pr71801.c Normal file
View file

@ -0,0 +1,22 @@
/* { dg-do compile } */
/* { dg-options "-O2 -g" } */
struct {
char uuid[16];
} c;
struct {
int s_uuid[6];
} a, b;
int bar (void);
static int get_label_uuid(char *p1) {
__builtin_memcpy(p1, a.s_uuid, sizeof(a));
if (bar())
__builtin_memcpy(p1, b.s_uuid, sizeof(b));
return 0;
}
void uuidcache_addentry(char *p1) { __builtin_memcpy(&c, p1, sizeof(c)); }
void uuidcache_init() {
char d[1];
get_label_uuid(d);
uuidcache_addentry(d);
}