From: Ilya Enkovich <enkovich.gnu@gmail.com>
Date: Wed, 30 Sep 2015 13:08:01 +0000 (+0000)
Subject: i386.c (scalar_chain::analyze_register_chain): Ignore debug insns.
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=21b820644d11c7a320421c532ed96cf3454ee16e;p=gcc.git

i386.c (scalar_chain::analyze_register_chain): Ignore debug insns.

gcc/

	* config/i386/i386.c (scalar_chain::analyze_register_chain): Ignore
	debug insns.
	(scalar_chain::convert_reg): Likewise.

gcc/testsuite/

	* gcc.target/i386/pr67761.c: New test.

From-SVN: r228292
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index a4dfd3afe51..1a799c7af5d 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,9 @@
+2015-09-30  Ilya Enkovich  <enkovich.gnu@gmail.com>
+
+	* config/i386/i386.c (scalar_chain::analyze_register_chain): Ignore
+	debug insns.
+	(scalar_chain::convert_reg): Likewise.
+
 2015-09-30  Richard Biener  <rguenther@suse.de>
 
 	* builtins.c: Add comment that no new simplifications shouldd
diff --git a/gcc/config/i386/i386.c b/gcc/config/i386/i386.c
index be639e075ad..fe9c756ba2f 100644
--- a/gcc/config/i386/i386.c
+++ b/gcc/config/i386/i386.c
@@ -2919,6 +2919,10 @@ scalar_chain::analyze_register_chain (bitmap candidates, df_ref ref)
   for (chain = DF_REF_CHAIN (ref); chain; chain = chain->next)
     {
       unsigned uid = DF_REF_INSN_UID (chain->ref);
+
+      if (!NONDEBUG_INSN_P (DF_REF_INSN (chain->ref)))
+	continue;
+
       if (!DF_REF_REG_MEM_P (chain->ref))
 	{
 	  if (bitmap_bit_p (insns, uid))
@@ -3279,7 +3283,7 @@ scalar_chain::convert_reg (unsigned regno)
 	    bitmap_clear_bit (conv, DF_REF_INSN_UID (ref));
 	  }
       }
-    else
+    else if (NONDEBUG_INSN_P (DF_REF_INSN (ref)))
       {
 	replace_rtx (DF_REF_INSN (ref), reg, scopy);
 	df_insn_rescan (DF_REF_INSN (ref));
diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index 8192f188083..afab76614d8 100644
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,3 +1,7 @@
+2015-09-30  Ilya Enkovich  <enkovich.gnu@gmail.com>
+
+	* gcc.target/i386/pr67761.c: New test.
+
 2015-09-30  Marek Polacek  <polacek@redhat.com>
 
 	PR c/67730
diff --git a/gcc/testsuite/gcc.target/i386/pr67761.c b/gcc/testsuite/gcc.target/i386/pr67761.c
new file mode 100644
index 00000000000..ff813f3f8b5
--- /dev/null
+++ b/gcc/testsuite/gcc.target/i386/pr67761.c
@@ -0,0 +1,13 @@
+/* PR target/pr67761 */
+/* { dg-do compile { target { ia32 } } } */
+/* { dg-options "-O2 -march=slm -g" } */
+/* { dg-final { scan-assembler "paddq" } } */
+
+void
+test (long long *values, long long val, long long delta)
+{
+  unsigned i;
+
+  for (i = 0; i < 128; i++, val += delta)
+    values[i] = val;
+}