[PATCH] Fix undefined behaviour in SH port

[PATCH] Fix undefined behaviour in SH port * config/sh/sh.h (CONST_OK_FOR_J16): Fix left shift undefined behaviour From-SVN: r228165

[PATCH] Fix undefined behaviour in SH port
[PATCH] Fix undefined behaviour in SH port * config/sh/sh.h (CONST_OK_FOR_J16): Fix left shift undefined behaviour From-SVN: r228165
a0a65802 · Jeff Law · Jeff Law · ddec87d9 · a0a65802 · a0a65802
Commit a0a65802 authored Sep 26, 2015 by Jeff Law Committed by Jeff Law Sep 26, 2015
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gcc/ChangeLog
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gcc/config/sh/sh.h
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--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
 2015-09-26  Jeff Law  <law@redhat.com>

+	* config/sh/sh.h (CONST_OK_FOR_J16): Fix left shift undefined
+	behaviour
+
 	* config/mips/mips.c (mips_compute_frame_info): Fix left shift
 	undefined behaviour.

--- a/gcc/config/sh/sh.h
+++ b/gcc/config/sh/sh.h
@@ -1176,7 +1176,7 @@ extern enum reg_class regno_reg_class[FIRST_PSEUDO_REGISTER];

 #define CONST_OK_FOR_J16(VALUE) \
  ((HOST_BITS_PER_WIDE_INT >= 64 && (VALUE) == (HOST_WIDE_INT) 0xffffffff) \
-   || (HOST_BITS_PER_WIDE_INT >= 64 && (VALUE) == (HOST_WIDE_INT) -1 << 32))
+   || (HOST_BITS_PER_WIDE_INT >= 64 && (VALUE) == (HOST_WIDE_INT) (HOST_WIDE_INT_M1U << 32)))

 #define CONST_OK_FOR_K08(VALUE) (((HOST_WIDE_INT)(VALUE))>= 0 \
 				 && ((HOST_WIDE_INT)(VALUE)) <= 255)