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From 097c985ab5f847fba2fe4f9e53732b75f2ecf266 Mon Sep 17 00:00:00 2001
From: kkojima <kkojima@138bc75d-0d04-0410-961f-82ee72b054a4>
Date: Wed, 8 Jun 2011 04:07:25 +0000
Subject: [PATCH] PR target/49238
* config/sh/sh.c (expand_cbranchdi4): Use a scratch register if
needed when original operands are used for msw_skip comparison.
* gcc.c-torture/compile/pr49238.c: New.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/branches/gcc-4_6-branch@174793 138bc75d-0d04-0410-961f-82ee72b054a4
index 05acb0a..ee80028 100644
--- a/gcc/config/sh/sh.c
+++ b/gcc/config/sh/sh.c
@@ -2187,6 +2187,13 @@ expand_cbranchdi4 (rtx *operands, enum rtx_code comparison)
{
operands[1] = op1h;
operands[2] = op2h;
+ if (reload_completed
+ && ! arith_reg_or_0_operand (op2h, SImode)
+ && (true_regnum (op1h) || (comparison != EQ && comparison != NE)))
+ {
+ emit_move_insn (scratch, operands[2]);
+ operands[2] = scratch;
+ }
}
operands[3] = skip_label = gen_label_rtx ();
new file mode 100644
index 0000000..fd8443a
--- /dev/null
+++ b/gcc/testsuite/gcc.c-torture/compile/pr49238.c
@@ -0,0 +1,18 @@
+/* PR target/49238 */
+extern int bar (void);
+
+void
+foo (unsigned long long a, int b)
+{
+ int i;
+
+ if (b)
+ for (a = -12; a >= 10; a = bar ())
+ break;
+ else
+ return;
+
+ for (i = 0; i < 10; i += 10)
+ if ((i == bar ()) | (bar () >= a))
+ bar ();
+}
--
1.7.0.4
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