diff options
Diffstat (limited to 'meta/recipes-devtools/gcc/gcc-4.6.0/gcc-4_6-branch-backports/0246-config-rx-rx.h-JUMP_ALIGN-LABEL_ALIGN-LOOP_ALIGN-Def.patch')
| -rw-r--r-- | meta/recipes-devtools/gcc/gcc-4.6.0/gcc-4_6-branch-backports/0246-config-rx-rx.h-JUMP_ALIGN-LABEL_ALIGN-LOOP_ALIGN-Def.patch | 76 |
1 files changed, 76 insertions, 0 deletions
diff --git a/meta/recipes-devtools/gcc/gcc-4.6.0/gcc-4_6-branch-backports/0246-config-rx-rx.h-JUMP_ALIGN-LABEL_ALIGN-LOOP_ALIGN-Def.patch b/meta/recipes-devtools/gcc/gcc-4.6.0/gcc-4_6-branch-backports/0246-config-rx-rx.h-JUMP_ALIGN-LABEL_ALIGN-LOOP_ALIGN-Def.patch new file mode 100644 index 000000000..b5a0eabef --- /dev/null +++ b/meta/recipes-devtools/gcc/gcc-4.6.0/gcc-4_6-branch-backports/0246-config-rx-rx.h-JUMP_ALIGN-LABEL_ALIGN-LOOP_ALIGN-Def.patch @@ -0,0 +1,76 @@ +From 37b0c0c107be5a66e933f54befeb9eb22e4d072b Mon Sep 17 00:00:00 2001 +From: nickc <nickc@138bc75d-0d04-0410-961f-82ee72b054a4> +Date: Tue, 10 May 2011 10:34:44 +0000 +Subject: [PATCH] * config/rx/rx.h (JUMP_ALIGN, LABEL_ALIGN, LOOP_ALIGN): Define. + (LABEL_ALIGN_AFTER_BARRIER): Pass label to rx_align_for_label + * config/rx/rx.c (rx_align_for_label): Add label and + uses_threshold parameters. Do not align when the label is not + used enough. + * config/rx/rx-protos.h (rx_align_for_label): Update prototype. + +git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/branches/gcc-4_6-branch@173613 138bc75d-0d04-0410-961f-82ee72b054a4 + +index e1ab9c2..8c8862e 100644 +--- a/gcc/config/rx/rx-protos.h ++++ b/gcc/config/rx/rx-protos.h +@@ -30,7 +30,7 @@ extern void rx_expand_prologue (void); + extern int rx_initial_elimination_offset (int, int); + + #ifdef RTX_CODE +-extern int rx_align_for_label (void); ++extern int rx_align_for_label (rtx, int); + extern void rx_emit_stack_popm (rtx *, bool); + extern void rx_emit_stack_pushm (rtx *); + extern void rx_expand_epilogue (bool); +@@ -38,7 +38,7 @@ extern char * rx_gen_move_template (rtx *, bool); + extern bool rx_is_legitimate_constant (rtx); + extern bool rx_is_restricted_memory_address (rtx, Mmode); + extern bool rx_match_ccmode (rtx, Mmode); +-extern void rx_notice_update_cc (rtx body, rtx insn); ++extern void rx_notice_update_cc (rtx, rtx); + extern void rx_split_cbranch (Mmode, Rcode, rtx, rtx, rtx); + extern Mmode rx_select_cc_mode (Rcode, rtx, rtx); + #endif +diff --git a/gcc/config/rx/rx.c b/gcc/config/rx/rx.c +index ad8d0bb..f56e779 100644 +--- a/gcc/config/rx/rx.c ++++ b/gcc/config/rx/rx.c +@@ -2752,8 +2752,15 @@ rx_match_ccmode (rtx insn, enum machine_mode cc_mode) + + + int +-rx_align_for_label (void) ++rx_align_for_label (rtx lab, int uses_threshold) + { ++ /* This is a simple heuristic to guess when an alignment would not be useful ++ because the delay due to the inserted NOPs would be greater than the delay ++ due to the misaligned branch. If uses_threshold is zero then the alignment ++ is always useful. */ ++ if (LABEL_NUSES (lab) < uses_threshold) ++ return 0; ++ + return optimize_size ? 1 : 3; + } + +diff --git a/gcc/config/rx/rx.h b/gcc/config/rx/rx.h +index 01fc23b..4a88a5b 100644 +--- a/gcc/config/rx/rx.h ++++ b/gcc/config/rx/rx.h +@@ -617,7 +617,13 @@ typedef unsigned int CUMULATIVE_ARGS; + + #define SELECT_CC_MODE(OP,X,Y) rx_select_cc_mode((OP), (X), (Y)) + +-#define LABEL_ALIGN_AFTER_BARRIER(x) rx_align_for_label () ++/* Compute the alignment needed for label X in various situations. ++ If the user has specified an alignment then honour that, otherwise ++ use rx_align_for_label. */ ++#define JUMP_ALIGN(x) (align_jumps ? align_jumps : rx_align_for_label (x, 0)) ++#define LABEL_ALIGN(x) (align_labels ? align_labels : rx_align_for_label (x, 3)) ++#define LOOP_ALIGN(x) (align_loops ? align_loops : rx_align_for_label (x, 2)) ++#define LABEL_ALIGN_AFTER_BARRIER(x) rx_align_for_label (x, 0) + + #define ASM_OUTPUT_MAX_SKIP_ALIGN(STREAM, LOG, MAX_SKIP) \ + do \ +-- +1.7.0.4 + |