From 269ca76f4b95b196558ee8b93828a722ee395196 Mon Sep 17 00:00:00 2001 From: Ilya Enkovich Date: Thu, 15 Oct 2015 09:26:39 +0000 Subject: [PATCH] re PR other/66887 (trunk/libmpx/mpxrt/mpxrt.c:158: possible performance problem) libmpx/ PR other/66887 * mpxrt/mpxrt.c (read_mpx_status_sig): Remove useless code. From-SVN: r228838 --- libmpx/ChangeLog | 5 +++++ libmpx/mpxrt/mpxrt.c | 9 ++------- 2 files changed, 7 insertions(+), 7 deletions(-) diff --git a/libmpx/ChangeLog b/libmpx/ChangeLog index 450b7d36e8c..5e5f77d68a7 100644 --- a/libmpx/ChangeLog +++ b/libmpx/ChangeLog @@ -1,3 +1,8 @@ +2015-10-15 Ilya Enkovich + + PR other/66887 + * mpxrt/mpxrt.c (read_mpx_status_sig): Remove useless code. + 2015-07-16 Ilya Enkovich * configure.ac: Remove link_mpx. diff --git a/libmpx/mpxrt/mpxrt.c b/libmpx/mpxrt/mpxrt.c index 0eff87e7cc6..c29c5d9a501 100644 --- a/libmpx/mpxrt/mpxrt.c +++ b/libmpx/mpxrt/mpxrt.c @@ -152,13 +152,8 @@ xgetbv (uint32_t index) static uint64_t read_mpx_status_sig (ucontext_t *uctxt) { - uint8_t __attribute__ ((__aligned__ (64))) buffer[4096]; - struct xsave_struct *xsave_buf = (struct xsave_struct *)buffer; - - memset (buffer, 0, sizeof (buffer)); - memcpy (buffer, - (uint8_t *)uctxt->uc_mcontext.fpregs + XSAVE_OFFSET_IN_FPMEM, - sizeof (struct xsave_struct)); + uint8_t *regs = (uint8_t *)uctxt->uc_mcontext.fpregs + XSAVE_OFFSET_IN_FPMEM; + struct xsave_struct *xsave_buf = (struct xsave_struct *)regs; return xsave_buf->bndcsr.status_reg; } -- 2.30.2