From: Tom de Vries <tom@codesourcery.com>
Date: Sat, 26 Apr 2014 16:32:56 +0000 (+0000)
Subject: Fix out-of-bounds array accesses in ldexpxf3.
X-Git-Tag: releases/gcc-5.1.0~7901
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=4148ef5ff6d4673423d3e5c7c4bb92944d3f7038;p=thirdparty%2Fgcc.git

Fix out-of-bounds array accesses in ldexpxf3.

2014-04-26  Tom de Vries  <tom@codesourcery.com>

	* config/i386/i386.md (define_expand "ldexpxf3"): Fix out-of-bounds
	array accesses.

From-SVN: r209824
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index ccb796432426..26325e56137e 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,8 @@
+2014-04-26  Tom de Vries  <tom@codesourcery.com>
+
+	* config/i386/i386.md (define_expand "ldexpxf3"): Fix out-of-bounds
+	array accesses.
+
 2014-04-25  Cary Coutant  <ccoutant@google.com>
 
         PR debug/60929
diff --git a/gcc/config/i386/i386.md b/gcc/config/i386/i386.md
index 7db117c51892..fde0a93e68fb 100644
--- a/gcc/config/i386/i386.md
+++ b/gcc/config/i386/i386.md
@@ -14427,15 +14427,16 @@
   "TARGET_USE_FANCY_MATH_387
    && flag_unsafe_math_optimizations"
 {
+  rtx tmp1, tmp2;
   if (optimize_insn_for_size_p ())
     FAIL;
 
-  operands[3] = gen_reg_rtx (XFmode);
-  operands[4] = gen_reg_rtx (XFmode);
+  tmp1 = gen_reg_rtx (XFmode);
+  tmp2 = gen_reg_rtx (XFmode);
 
-  emit_insn (gen_floatsixf2 (operands[3], operands[2]));
-  emit_insn (gen_fscalexf4_i387 (operands[0], operands[4],
-                                 operands[1], operands[3]));
+  emit_insn (gen_floatsixf2 (tmp1, operands[2]));
+  emit_insn (gen_fscalexf4_i387 (operands[0], tmp2,
+                                 operands[1], tmp1));
   DONE;
 })