From 71aaa2ff33c3699b3feafc9b409f83bf8b52213c Mon Sep 17 00:00:00 2001
From: Jakub Jelinek <jakub@redhat.com>
Date: Tue, 9 Sep 2008 21:18:55 +0200
Subject: [PATCH] re PR target/37438 (ICE in extract_insn, at recog.c:2027 for
 i{4,5}86)

	PR target/37438
	* config/i386/i386.md (zero_extendqihi2_movzbl): Enable when optimizing
	for size, not speed.

	* gcc.dg/pr37438.c: New test.

From-SVN: r140167
---
 gcc/ChangeLog                  |  4 ++++
 gcc/config/i386/i386.md        |  2 +-
 gcc/testsuite/ChangeLog        |  3 +++
 gcc/testsuite/gcc.dg/pr37438.c | 21 +++++++++++++++++++++
 4 files changed, 29 insertions(+), 1 deletion(-)
 create mode 100644 gcc/testsuite/gcc.dg/pr37438.c

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 8a255250c73..41d43e68e6a 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,5 +1,9 @@
 2008-09-09  Jakub Jelinek  <jakub@redhat.com>
 
+	PR target/37438
+	* config/i386/i386.md (zero_extendqihi2_movzbl): Enable when optimizing
+	for size, not speed.
+
 	PR rtl-optimization/37408
 	* function.c (assign_parm_find_stack_rtl): Set correct MEM_SIZE
 	if parm is promoted.
diff --git a/gcc/config/i386/i386.md b/gcc/config/i386/i386.md
index d952847b266..976bc727e45 100644
--- a/gcc/config/i386/i386.md
+++ b/gcc/config/i386/i386.md
@@ -3713,7 +3713,7 @@
 (define_insn "*zero_extendqihi2_movzbl"
   [(set (match_operand:HI 0 "register_operand" "=r")
      (zero_extend:HI (match_operand:QI 1 "nonimmediate_operand" "qm")))]
-  "(!TARGET_ZERO_EXTEND_WITH_AND || optimize_function_for_speed_p (cfun))
+  "(!TARGET_ZERO_EXTEND_WITH_AND || optimize_function_for_size_p (cfun))
    && reload_completed"
   "movz{bl|x}\t{%1, %k0|%k0, %1}"
   [(set_attr "type" "imovx")
diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index 79182a476c1..86a9042c263 100644
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,5 +1,8 @@
 2008-09-09  Jakub Jelinek  <jakub@redhat.com>
 
+	PR target/37438
+	* gcc.dg/pr37438.c: New test.
+
 	PR c++/37389
 	* g++.dg/parse/enum4.C: New test.
 
diff --git a/gcc/testsuite/gcc.dg/pr37438.c b/gcc/testsuite/gcc.dg/pr37438.c
new file mode 100644
index 00000000000..a6e366dc3c3
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/pr37438.c
@@ -0,0 +1,21 @@
+/* PR target/37438 */
+/* { dg-do compile } */
+/* { dg-options "-Os" } */
+/* { dg-options "-Os -march=i486" { target { { i686-*-* x86_64-*-* } && ilp32 } } } */
+
+extern int bar (unsigned long long int);
+extern int baz (const char *, unsigned int, unsigned short);
+
+int
+foo (unsigned long long int x)
+{
+  return (x & 0xff) | ((unsigned int) (x >> 12) & ~0xff);
+}
+
+int
+test (const char *v, unsigned int w, unsigned long long int x)
+{
+  unsigned short k;
+  k = ((bar (x) & 0xff) << 8) | (foo (x) & 0xff);
+  return baz (v, w, k);
+}