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-rw-r--r--meta/recipes-devtools/gcc/gcc-4.5.1/pr30961.dpatch179
1 files changed, 0 insertions, 179 deletions
diff --git a/meta/recipes-devtools/gcc/gcc-4.5.1/pr30961.dpatch b/meta/recipes-devtools/gcc/gcc-4.5.1/pr30961.dpatch
deleted file mode 100644
index b20fdf5bf5..0000000000
--- a/meta/recipes-devtools/gcc/gcc-4.5.1/pr30961.dpatch
+++ /dev/null
@@ -1,179 +0,0 @@
-#! /bin/sh -e
-
-# DP: <your description>
-
-dir=
-if [ $# -eq 3 -a "$2" = '-d' ]; then
- pdir="-d $3"
- dir="$3/"
-elif [ $# -ne 1 ]; then
- echo >&2 "`basename $0`: script expects -patch|-unpatch as argument"
- exit 1
-fi
-case "$1" in
- -patch)
- patch $pdir -f --no-backup-if-mismatch -p0 < $0
- ;;
- -unpatch)
- patch $pdir -f --no-backup-if-mismatch -R -p0 < $0
- ;;
- *)
- echo >&2 "`basename $0`: script expects -patch|-unpatch as argument"
- exit 1
-esac
-exit 0
-
-From: "H.J. Lu" <hjl@lucon.org>
-Sender: gcc-patches-owner@gcc.gnu.org
-To: gcc-patches@gcc.gnu.org
-Subject: PATCH: PR target/30961: [4.1/4.2/4.3 regression] redundant reg/mem stores/moves
-Date: Mon, 27 Aug 2007 11:34:12 -0700
-
-We start with
-
-(note:HI 3 4 22 2 NOTE_INSN_FUNCTION_BEG)
-
-(insn:HI 6 3 10 2 c.c:3 (set (reg:DF 58 [ <result> ])
- (subreg:DF (reg/v:DI 59 [ in ]) 0)) 102 {*movdf_integer_rex64} (expr_list:REG_DEAD (reg/v:DI 59 [ in ])
- (nil)))
-
-(insn:HI 10 6 16 2 c.c:7 (set (reg/i:DF 21 xmm0 [ <result> ])
- (reg:DF 58 [ <result> ])) 102 {*movdf_integer_rex64} (expr_list:REG_DEAD (reg:DF 58 [ <result> ])
- (nil)))
-
-(insn:HI 16 10 0 2 c.c:7 (use (reg/i:DF 21 xmm0 [ <result> ])) -1 (nil))
-
-we are trying to allocate registers for insn 6 and we allocate
-xmm0 for the return value. Reload doesn't check if xmm0 can be used for
-DF 59, it allocates xmm1 for DF 59 and generates:
-
-Reloads for insn # 6
-Reload 0: reload_in (DF) = (reg:DF 5 di)
- SSE_REGS, RELOAD_FOR_INPUT (opnum = 1), can't combine
- reload_in_reg: (subreg:DF (reg/v:DI 5 di [orig:59 in ] [59]) 0)
- reload_reg_rtx: (reg:DF 22 xmm1)
-...
-
-(note:HI 4 1 3 2 [bb 2] NOTE_INSN_BASIC_BLOCK)
-
-(note:HI 3 4 22 2 NOTE_INSN_FUNCTION_BEG)
-
-(insn 22 3 23 2 c.c:3 (set (mem/c:DF (plus:DI (reg/f:DI 7 sp)
- (const_int -8 [0xfffffffffffffff8])) [0 S8 A8])
- (reg:DF 5 di)) 102 {*movdf_integer_rex64} (nil))
-
-(insn 23 22 6 2 c.c:3 (set (reg:DF 22 xmm1)
- (mem/c:DF (plus:DI (reg/f:DI 7 sp)
- (const_int -8 [0xfffffffffffffff8])) [0 S8 A8])) 102 {*movdf_integer_rex64} (nil))
-
-(insn:HI 6 23 16 2 c.c:3 (set (reg:DF 21 xmm0 [orig:58 <result> ] [58])
- (reg:DF 22 xmm1)) 102 {*movdf_integer_rex64} (nil))
-
-(insn 16 6 21 2 c.c:7 (use (reg/i:DF 21 xmm0 [ <result> ])) -1 (nil))
-
-This patch tries to use the destination register when reloading for input. It
-generates
-
-Reloads for insn # 6
-Reload 0: reload_in (DF) = (reg:DF 5 di)
- SSE_REGS, RELOAD_FOR_INPUT (opnum = 1), can't combine
- reload_in_reg: (subreg:DF (reg/v:DI 5 di [orig:59 in ] [59]) 0)
- reload_reg_rtx: (reg:DF 21 xmm0)
-...
-(note:HI 4 1 3 2 [bb 2] NOTE_INSN_BASIC_BLOCK)
-
-(note:HI 3 4 22 2 NOTE_INSN_FUNCTION_BEG)
-
-(insn 22 3 23 2 c.c:3 (set (mem/c:DF (plus:DI (reg/f:DI 7 sp)
- (const_int -8 [0xfffffffffffffff8])) [0 S8 A8])
- (reg:DF 5 di)) 102 {*movdf_integer_rex64} (nil))
-
-(insn 23 22 6 2 c.c:3 (set (reg:DF 21 xmm0)
- (mem/c:DF (plus:DI (reg/f:DI 7 sp)
- (const_int -8 [0xfffffffffffffff8])) [0 S8 A8])) 102 {*movdf_integer_rex64} (nil))
-
-(insn:HI 6 23 10 2 c.c:3 (set (reg:DF 22 xmm1 [orig:58 <result> ] [58])
- (reg:DF 21 xmm0)) 102 {*movdf_integer_rex64} (nil))
-
-(insn:HI 10 6 16 2 c.c:7 (set (reg/i:DF 21 xmm0 [ <result> ])
- (reg:DF 22 xmm1 [orig:58 <result> ] [58])) 102 {*movdf_integer_rex64} (nil))
-
-(insn 16 10 21 2 c.c:7 (use (reg/i:DF 21 xmm0 [ <result> ])) -1 (nil))
-
-
-H.J.
-----
-gcc/
-
-2007-08-27 H.J. Lu <hongjiu.lu@intel.com>
-
- PR target/30961
- * reload1.c (find_reg): Favor the hard register in destination
- if it is usable and a memory location is needed for reload
- input.
-
-gcc/testsuite/
-
-2007-08-27 H.J. Lu <hongjiu.lu@intel.com>
-
- PR target/30961
- * gcc.target/i386/pr30961-1.c: New.
-
---- gcc/reload1.c.second 2007-08-27 09:35:08.000000000 -0700
-+++ gcc/reload1.c 2007-08-27 09:36:33.000000000 -0700
-@@ -1781,6 +1781,20 @@ find_reg (struct insn_chain *chain, int
- HARD_REG_SET not_usable;
- HARD_REG_SET used_by_other_reload;
- reg_set_iterator rsi;
-+#ifdef SECONDARY_MEMORY_NEEDED
-+ rtx body = PATTERN (chain->insn);
-+ unsigned int dest_reg = FIRST_PSEUDO_REGISTER;
-+
-+ if (GET_CODE (body) == SET)
-+ {
-+ rtx dest = SET_DEST (body);
-+
-+ if ((REG_P (dest)
-+ || (GET_CODE (dest) == SUBREG
-+ && REG_P (SUBREG_REG (dest)))))
-+ dest_reg = reg_or_subregno (dest);
-+ }
-+#endif
-
- COPY_HARD_REG_SET (not_usable, bad_spill_regs);
- IOR_HARD_REG_SET (not_usable, bad_spill_regs_global);
-@@ -1821,6 +1835,18 @@ find_reg (struct insn_chain *chain, int
- this_cost--;
- if (rl->out && REG_P (rl->out) && REGNO (rl->out) == regno)
- this_cost--;
-+#ifdef SECONDARY_MEMORY_NEEDED
-+ /* If a memory location is needed for rl->in and dest_reg
-+ is usable, we will favor it. */
-+ else if (dest_reg == regno
-+ && rl->in
-+ && REG_P (rl->in)
-+ && REGNO (rl->in) < FIRST_PSEUDO_REGISTER
-+ && SECONDARY_MEMORY_NEEDED (REGNO_REG_CLASS (REGNO (rl->in)),
-+ rl->class,
-+ rl->mode))
-+ this_cost = 0;
-+#endif
- if (this_cost < best_cost
- /* Among registers with equal cost, prefer caller-saved ones, or
- use REG_ALLOC_ORDER if it is defined. */
---- gcc/testsuite/gcc.target/i386/pr30961-1.c.second 2007-08-27 11:01:59.000000000 -0700
-+++ gcc/testsuite/gcc.target/i386/pr30961-1.c 2007-08-27 11:02:51.000000000 -0700
-@@ -0,0 +1,13 @@
-+/* { dg-do compile } */
-+/* { dg-require-effective-target lp64 } */
-+/* { dg-options "-O2" } */
-+
-+double
-+convert (long long in)
-+{
-+ double f;
-+ __builtin_memcpy( &f, &in, sizeof( in ) );
-+ return f;
-+}
-+
-+/* { dg-final { scan-assembler-not "movapd" } } */
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