From: Jakub Jelinek <jakub@redhat.com>
Date: Thu, 8 Mar 2018 20:55:03 +0000 (+0100)
Subject: re PR inline-asm/84742 (internal compiler error: in process_alt_operands, at lra... 
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=86c6352c2f6d1d6dac28620d98593e4afe7ae89f;p=gcc.git

re PR inline-asm/84742 (internal compiler error: in process_alt_operands, at lra-constraints.c:2112)

	PR inline-asm/84742
	* recog.c (asm_operand_ok): Return 0 if multi-character constraint
	has ',' character inside of it.

	* gcc.target/i386/pr84742-1.c: New test.
	* gcc.target/i386/pr84742-2.c: New test.

From-SVN: r258369
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index a467d7bafaf..78b8fc4643e 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,9 @@
+2018-03-08  Jakub Jelinek  <jakub@redhat.com>
+
+	PR inline-asm/84742
+	* recog.c (asm_operand_ok): Return 0 if multi-character constraint
+	has ',' character inside of it.
+
 2018-03-08  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>
 
 	PR target/84748
diff --git a/gcc/recog.c b/gcc/recog.c
index af6a6b01d88..0e26c93162b 100644
--- a/gcc/recog.c
+++ b/gcc/recog.c
@@ -1825,7 +1825,7 @@ asm_operand_ok (rtx op, const char *constraint, const char **constraints)
       len = CONSTRAINT_LEN (c, constraint);
       do
 	constraint++;
-      while (--len && *constraint);
+      while (--len && *constraint && *constraint != ',');
       if (len)
 	return 0;
     }
diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index 8b6d0e53c5e..32740bf3710 100644
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,3 +1,9 @@
+2018-03-08  Jakub Jelinek  <jakub@redhat.com>
+
+	PR inline-asm/84742
+	* gcc.target/i386/pr84742-1.c: New test.
+	* gcc.target/i386/pr84742-2.c: New test.
+
 2018-03-08  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>
 
 	PR target/84748
diff --git a/gcc/testsuite/gcc.target/i386/pr84742-1.c b/gcc/testsuite/gcc.target/i386/pr84742-1.c
new file mode 100644
index 00000000000..07b822f3112
--- /dev/null
+++ b/gcc/testsuite/gcc.target/i386/pr84742-1.c
@@ -0,0 +1,10 @@
+/* PR inline-asm/84742 */
+/* { dg-do compile } */
+/* { dg-options "-O2" } */
+
+void 
+foo ()
+{
+  char b = 1;
+  asm volatile ("" : "+T,Y" (b));	/* { dg-error "impossible constraint in 'asm'" } */
+}
diff --git a/gcc/testsuite/gcc.target/i386/pr84742-2.c b/gcc/testsuite/gcc.target/i386/pr84742-2.c
new file mode 100644
index 00000000000..7ac9cea675c
--- /dev/null
+++ b/gcc/testsuite/gcc.target/i386/pr84742-2.c
@@ -0,0 +1,10 @@
+/* PR inline-asm/84742 */
+/* { dg-do compile } */
+/* { dg-options "-O2" } */
+
+void 
+foo ()
+{
+  char b = 1;
+  asm volatile ("" : "+gT,m" (b));	/* { dg-error "impossible constraint in 'asm'" } */
+}