From: Jeff Law <law@redhat.com>
Date: Sat, 26 Sep 2015 07:38:29 +0000 (-0600)
Subject: [PATCH] Fix undefined behaviour in mips port
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=ddec87d98d27536e70f3b7ddbe6a85cd0422cc86;p=gcc.git

[PATCH] Fix undefined behaviour in mips port

[PATCH] Fix undefined behaviour in mips port
	* config/mips/mips.c (mips_compute_frame_info): Fix left shift
	undefined behaviour.

From-SVN: r228164
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 98c1bd9c913..6887b14fde3 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,5 +1,8 @@
 2015-09-26  Jeff Law  <law@redhat.com>
 
+	* config/mips/mips.c (mips_compute_frame_info): Fix left shift
+	undefined behaviour.
+
 	* config/cris/cris.md (asrandb): Fix left shift undefined
 	behaviour.
 	(asrandw): Likewise.
diff --git a/gcc/config/mips/mips.c b/gcc/config/mips/mips.c
index 0e0ecf232d9..456db08d5f0 100644
--- a/gcc/config/mips/mips.c
+++ b/gcc/config/mips/mips.c
@@ -10572,7 +10572,7 @@ mips_compute_frame_info (void)
       if (mips_save_reg_p (regno))
 	{
 	  frame->num_fp += MAX_FPRS_PER_FMT;
-	  frame->fmask |= ~(~0 << MAX_FPRS_PER_FMT) << (regno - FP_REG_FIRST);
+	  frame->fmask |= ~(~0U << MAX_FPRS_PER_FMT) << (regno - FP_REG_FIRST);
 	}
 
   /* Move above the FPR save area.  */