From: Torbjorn Granlund <tege@gnu.org>
Date: Sat, 12 Feb 1994 12:40:58 +0000 (+0000)
Subject: (expand_shift): Truncate immediate count if SHIFT_COUNT_TRUNCATED.
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=2ab0a5c41c7ae40cf1ae3bc172c1daebbec43643;p=gcc.git

(expand_shift): Truncate immediate count if SHIFT_COUNT_TRUNCATED.

From-SVN: r6538
---

diff --git a/gcc/expmed.c b/gcc/expmed.c
index ccf130e5672..a4eea006417 100644
--- a/gcc/expmed.c
+++ b/gcc/expmed.c
@@ -1602,6 +1602,14 @@ expand_shift (code, mode, shifted, amount, target, unsignedp)
 
   op1 = expand_expr (amount, NULL_RTX, VOIDmode, 0);
 
+#if SHIFT_COUNT_TRUNCATED
+  if (SHIFT_COUNT_TRUNCATED
+      && GET_CODE (op1) == CONST_INT
+      && (unsigned HOST_WIDE_INT) INTVAL (op1) >= GET_MODE_BITSIZE (mode))
+    op1 = GEN_INT ((unsigned HOST_WIDE_INT) INTVAL (op1)
+		   % GET_MODE_BITSIZE (mode));
+#endif
+
   if (op1 == const0_rtx)
     return shifted;