From: bernds <bernds@138bc75d-0d04-0410-961f-82ee72b054a4>
Date: Tue, 15 Dec 2015 14:34:01 +0000 (+0000)
Subject: Fix PR21273
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=dfea92e17077428d1f38137b6e7fc732c584e696;p=thirdparty%2Fgcc.git

Fix PR21273

	PR middle-end/21273
	* gensupport.c (collect_insn_data): Look for number of alternatives
	in MATCH_SCRATCH.



git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@231654 138bc75d-0d04-0410-961f-82ee72b054a4
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index ca50fba0f69e..69fe3a7273ef 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,9 @@
+2015-12-15  Bernd Schmidt  <bschmidt@redhat.com>
+
+	PR middle-end/21273
+	* gensupport.c (collect_insn_data): Look for number of alternatives
+	in MATCH_SCRATCH.
+
 2015-12-15  Nathan Sidwell  <nathan@acm.org>
 
 	* config/nvptx/nvptx.h (HARD_REGNO_NREGS): Reformat.
diff --git a/gcc/gensupport.c b/gcc/gensupport.c
index 7969060c117f..e32f19950185 100644
--- a/gcc/gensupport.c
+++ b/gcc/gensupport.c
@@ -1068,12 +1068,12 @@ collect_insn_data (rtx pattern, int *palt, int *pmax)
   switch (code)
     {
     case MATCH_OPERAND:
-      i = n_alternatives (XSTR (pattern, 2));
+    case MATCH_SCRATCH:
+      i = n_alternatives (XSTR (pattern, code == MATCH_SCRATCH ? 1 : 2));
       *palt = (i > *palt ? i : *palt);
       /* Fall through.  */
 
     case MATCH_OPERATOR:
-    case MATCH_SCRATCH:
     case MATCH_PARALLEL:
       i = XINT (pattern, 0);
       if (i > *pmax)