* [PATCH] Fix undefined behaviour in SH port,
@ 2015-09-26 10:35 Jeff Law
0 siblings, 0 replies; only message in thread
From: Jeff Law @ 2015-09-26 10:35 UTC (permalink / raw)
To: gcc-patches
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And now the SH port in the obvious way. Verified by building all the sh
configurations in config-list.mk with a trunk compiler.
Installed on the trunk,
Jeff
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commit ac55233b083fc30445141c530fcf472786f935e7
Author: Jeff Law <law@tor.usersys.redhat.com>
Date: Sat Sep 26 03:24:07 2015 -0400
[PATCH] Fix undefined behaviour in SH port
* config/sh/sh.h (CONST_OK_FOR_J16): Fix left shift undefined
behaviour
diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 6887b14..28c6bf7 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,5 +1,8 @@
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.
diff --git a/gcc/config/sh/sh.h b/gcc/config/sh/sh.h
index 7aa489d..b18cc1f 100644
--- 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)
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2015-09-26 10:35 [PATCH] Fix undefined behaviour in SH port, Jeff Law
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