re PR inline-asm/84985 (ICE in match_reload, at lra-constraints.c:1068)

2018-03-29  Vladimir Makarov  <vmakarov@redhat.com>

	PR inline-asm/84985
	* lra-constraints.c (process_alt_operands): Move setting
	this_alternative_matches below.

2018-03-29  Vladimir Makarov  <vmakarov@redhat.com>

	PR inline-asm/84985
	* gcc.target/i386/pr84985.c: New.

From-SVN: r258961

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 2c044f7..3dd318a 100644 (file)
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,9 @@
+2018-03-29  Vladimir Makarov  <vmakarov@redhat.com>
+
+       PR inline-asm/84985
+       * lra-constraints.c (process_alt_operands): Move setting
+       this_alternative_matches below.
+
 2018-03-29  Martin Liska  <mliska@suse.cz>
 
         PR lto/84995.

diff --git a/gcc/lra-constraints.c b/gcc/lra-constraints.c
index 0dd4787..5405c4d 100644 (file)
--- a/gcc/lra-constraints.c
+++ b/gcc/lra-constraints.c
@@ -2126,7 +2126,6 @@ process_alt_operands (int only_alternative)
                        && curr_operand_mode[m] != curr_operand_mode[nop])
                      break;
                    
-                   this_alternative_matches = m;
                    m_hregno = get_hard_regno (*curr_id->operand_loc[m], false);
                    /* We are supposed to match a previous operand.
                       If we do, we win if that one did.  If we do
@@ -2228,6 +2227,7 @@ process_alt_operands (int only_alternative)
                    else
                      did_match = true;
 
+                   this_alternative_matches = m;
                    /* This can be fixed with reloads if the operand
                       we are supposed to match can be fixed with
                       reloads. */

diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index 912d406..bc545f0 100644 (file)
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,3 +1,8 @@
+2018-03-29  Vladimir Makarov  <vmakarov@redhat.com>
+
+       PR inline-asm/84985
+       * gcc.target/i386/pr84985.c: New.
+
 2018-03-29  David Malcolm  <dmalcolm@redhat.com>
 
        PR c++/85110

diff --git a/gcc/testsuite/gcc.target/i386/pr84985.c b/gcc/testsuite/gcc.target/i386/pr84985.c
new file mode 100644 (file)
index 0000000..e987e41
--- /dev/null
+++ b/gcc/testsuite/gcc.target/i386/pr84985.c
@@ -0,0 +1,6 @@
+/* { dg-do compile } */
+/* { dg-options "-O0" } */
+int main() {
+  int a;
+  asm("" : "=d"(a) : "0"(a), "0ae"(&a));
+}