Don't convert TImode in debug insn

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

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 8ddd878527a4b5c9379dda730918aa6e6d23dcba..40e34dd884c27b06420d1af36dfeb6545c0101a4 100644 (file)
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -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.

diff --git a/gcc/config/i386/i386.c b/gcc/config/i386/i386.c
index 9eaf4144965a186c990938b78c37ca57e06b7d78..d190bef52999dfbc6b39cfa41d8208689479abb7 100644 (file)
--- a/gcc/config/i386/i386.c
+++ b/gcc/config/i386/i386.c
@@ -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

diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index 1d9dc5b9e4447e357fbab39ebc3d9a88857da155..4bfbba596fdfbc9669a1352f5168ff0d8171c146 100644 (file)
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -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

diff --git a/gcc/testsuite/gcc.target/i386/pr71801.c b/gcc/testsuite/gcc.target/i386/pr71801.c
new file mode 100644 (file)
index 0000000..6c87522
--- /dev/null
+++ b/gcc/testsuite/gcc.target/i386/pr71801.c
@@ -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);
+}