backport: re PR target/79729 (ICE in ix86_print_operand, at config/i386/i386.c:18231)

	Backported from mainline
	2017-02-28  Jakub Jelinek  <jakub@redhat.com>

	PR target/79729
	* config/i386/i386.c (ix86_print_operand) <case 'R'>: Replace
	gcc_unreachable with output_operand_lossage.

	* gcc.target/i386/pr79729.c: New test.

From-SVN: r248652

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 29359b73d0d709dcb0f70fe1035553bbe666a86b..ad692eb55f35b41f8d1dc0557a6f132ce6933f29 100644 (file)
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,6 +1,12 @@
 2017-05-30  Jakub Jelinek  <jakub@redhat.com>
 
        Backported from mainline
+       2017-02-28  Jakub Jelinek  <jakub@redhat.com>
+
+       PR target/79729
+       * config/i386/i386.c (ix86_print_operand) <case 'R'>: Replace
+       gcc_unreachable with output_operand_lossage.
+
        2017-02-25  Jakub Jelinek  <jakub@redhat.com>
 
        PR middle-end/79396

diff --git a/gcc/config/i386/i386.c b/gcc/config/i386/i386.c
index bdd91dc6d17047d68e73955936a29bb655ae1e31..0fd46a7f21756f7b35f3ded2266b3fdefd5a4d54 100644 (file)
--- a/gcc/config/i386/i386.c
+++ b/gcc/config/i386/i386.c
@@ -15955,7 +15955,8 @@ ix86_print_operand (FILE *file, rtx x, int code)
              fputs ("{rz-sae}", file);
              break;
            default:
-             gcc_unreachable ();
+             output_operand_lossage ("operand is not a specific integer, "
+                                     "invalid operand code 'R'");
            }
 
          if (ASSEMBLER_DIALECT == ASM_ATT)

diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index 06771821c0d3505961df9b2d06f65de677a544ae..5a0617d211ad3ff8d32742f4360c107e3ba1880b 100644 (file)
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,6 +1,11 @@
 2017-05-30  Jakub Jelinek  <jakub@redhat.com>
 
        Backported from mainline
+       2017-02-28  Jakub Jelinek  <jakub@redhat.com>
+
+       PR target/79729
+       * gcc.target/i386/pr79729.c: New test.
+
        2017-02-25  Jakub Jelinek  <jakub@redhat.com>
 
        PR middle-end/79396

diff --git a/gcc/testsuite/gcc.target/i386/pr79729.c b/gcc/testsuite/gcc.target/i386/pr79729.c
new file mode 100644 (file)
index 0000000..4e6f500
--- /dev/null
+++ b/gcc/testsuite/gcc.target/i386/pr79729.c
@@ -0,0 +1,8 @@
+/* PR target/79729 */
+/* { dg-do compile } */
+
+void
+foo (int x)
+{
+  __asm__ volatile ("# %R0" : : "n" (129));    /* { dg-error "invalid operand code" } */
+}