diff options
Diffstat (limited to 'meta-oe/recipes-devtools/gcc/gcc-4.5/linaro/gcc-4.5-linaro-r99464.patch')
| -rw-r--r-- | meta-oe/recipes-devtools/gcc/gcc-4.5/linaro/gcc-4.5-linaro-r99464.patch | 157 |
1 files changed, 157 insertions, 0 deletions
diff --git a/meta-oe/recipes-devtools/gcc/gcc-4.5/linaro/gcc-4.5-linaro-r99464.patch b/meta-oe/recipes-devtools/gcc/gcc-4.5/linaro/gcc-4.5-linaro-r99464.patch new file mode 100644 index 0000000..e8c8e63 --- /dev/null +++ b/meta-oe/recipes-devtools/gcc/gcc-4.5/linaro/gcc-4.5-linaro-r99464.patch @@ -0,0 +1,157 @@ + LP: #681138 + Backport from mainline: + + gcc/ + * config/arm/sync.md (sync_clobber, sync_t2_reqd): New code attribute. + (arm_sync_old_<sync_optab>si, arm_sync_old_<sync_optab><mode>): Use + the sync_clobber and sync_t2_reqd code attributes. + * config/arm/arm.c (arm_output_sync_loop): Reverse the operation if + the t2 argument is NULL. + +=== modified file 'gcc/config/arm/arm.c' +Index: gcc-4_5-branch/gcc/config/arm/arm.c +=================================================================== +--- gcc-4_5-branch.orig/gcc/config/arm/arm.c ++++ gcc-4_5-branch/gcc/config/arm/arm.c +@@ -23098,10 +23098,46 @@ arm_output_sync_loop (emit_f emit, + break; + } + +- arm_output_strex (emit, mode, "", t2, t1, memory); +- operands[0] = t2; +- arm_output_asm_insn (emit, 0, operands, "teq\t%%0, #0"); +- arm_output_asm_insn (emit, 0, operands, "bne\t%sLSYT%%=", LOCAL_LABEL_PREFIX); ++ if (t2) ++ { ++ arm_output_strex (emit, mode, "", t2, t1, memory); ++ operands[0] = t2; ++ arm_output_asm_insn (emit, 0, operands, "teq\t%%0, #0"); ++ arm_output_asm_insn (emit, 0, operands, "bne\t%sLSYT%%=", ++ LOCAL_LABEL_PREFIX); ++ } ++ else ++ { ++ /* Use old_value for the return value because for some operations ++ the old_value can easily be restored. This saves one register. */ ++ arm_output_strex (emit, mode, "", old_value, t1, memory); ++ operands[0] = old_value; ++ arm_output_asm_insn (emit, 0, operands, "teq\t%%0, #0"); ++ arm_output_asm_insn (emit, 0, operands, "bne\t%sLSYT%%=", ++ LOCAL_LABEL_PREFIX); ++ ++ switch (sync_op) ++ { ++ case SYNC_OP_ADD: ++ arm_output_op3 (emit, "sub", old_value, t1, new_value); ++ break; ++ ++ case SYNC_OP_SUB: ++ arm_output_op3 (emit, "add", old_value, t1, new_value); ++ break; ++ ++ case SYNC_OP_XOR: ++ arm_output_op3 (emit, "eor", old_value, t1, new_value); ++ break; ++ ++ case SYNC_OP_NONE: ++ arm_output_op2 (emit, "mov", old_value, required_value); ++ break; ++ ++ default: ++ gcc_unreachable (); ++ } ++ } + + arm_process_output_memory_barrier (emit, NULL); + arm_output_asm_insn (emit, 1, operands, "%sLSYB%%=:", LOCAL_LABEL_PREFIX); +Index: gcc-4_5-branch/gcc/config/arm/sync.md +=================================================================== +--- gcc-4_5-branch.orig/gcc/config/arm/sync.md ++++ gcc-4_5-branch/gcc/config/arm/sync.md +@@ -103,6 +103,18 @@ + (plus "add") + (minus "sub")]) + ++(define_code_attr sync_clobber [(ior "=&r") ++ (and "=&r") ++ (xor "X") ++ (plus "X") ++ (minus "X")]) ++ ++(define_code_attr sync_t2_reqd [(ior "4") ++ (and "4") ++ (xor "*") ++ (plus "*") ++ (minus "*")]) ++ + (define_expand "sync_<sync_optab>si" + [(match_operand:SI 0 "memory_operand") + (match_operand:SI 1 "s_register_operand") +@@ -286,7 +298,6 @@ + VUNSPEC_SYNC_COMPARE_AND_SWAP)) + (set (match_dup 1) (unspec_volatile:SI [(match_dup 2)] + VUNSPEC_SYNC_COMPARE_AND_SWAP)) +- (clobber:SI (match_scratch:SI 4 "=&r")) + (set (reg:CC CC_REGNUM) (unspec_volatile:CC [(match_dup 1)] + VUNSPEC_SYNC_COMPARE_AND_SWAP)) + ] +@@ -299,7 +310,6 @@ + (set_attr "sync_required_value" "2") + (set_attr "sync_new_value" "3") + (set_attr "sync_t1" "0") +- (set_attr "sync_t2" "4") + (set_attr "conds" "clob") + (set_attr "predicable" "no")]) + +@@ -313,7 +323,6 @@ + VUNSPEC_SYNC_COMPARE_AND_SWAP))) + (set (match_dup 1) (unspec_volatile:NARROW [(match_dup 2)] + VUNSPEC_SYNC_COMPARE_AND_SWAP)) +- (clobber:SI (match_scratch:SI 4 "=&r")) + (set (reg:CC CC_REGNUM) (unspec_volatile:CC [(match_dup 1)] + VUNSPEC_SYNC_COMPARE_AND_SWAP)) + ] +@@ -326,7 +335,6 @@ + (set_attr "sync_required_value" "2") + (set_attr "sync_new_value" "3") + (set_attr "sync_t1" "0") +- (set_attr "sync_t2" "4") + (set_attr "conds" "clob") + (set_attr "predicable" "no")]) + +@@ -487,7 +495,7 @@ + VUNSPEC_SYNC_OLD_OP)) + (clobber (reg:CC CC_REGNUM)) + (clobber (match_scratch:SI 3 "=&r")) +- (clobber (match_scratch:SI 4 "=&r"))] ++ (clobber (match_scratch:SI 4 "<sync_clobber>"))] + "TARGET_HAVE_LDREX && TARGET_HAVE_MEMORY_BARRIER" + { + return arm_output_sync_insn (insn, operands); +@@ -496,7 +504,7 @@ + (set_attr "sync_memory" "1") + (set_attr "sync_new_value" "2") + (set_attr "sync_t1" "3") +- (set_attr "sync_t2" "4") ++ (set_attr "sync_t2" "<sync_t2_reqd>") + (set_attr "sync_op" "<sync_optab>") + (set_attr "conds" "clob") + (set_attr "predicable" "no")]) +@@ -540,7 +548,7 @@ + VUNSPEC_SYNC_OLD_OP)) + (clobber (reg:CC CC_REGNUM)) + (clobber (match_scratch:SI 3 "=&r")) +- (clobber (match_scratch:SI 4 "=&r"))] ++ (clobber (match_scratch:SI 4 "<sync_clobber>"))] + "TARGET_HAVE_LDREXBHD && TARGET_HAVE_MEMORY_BARRIER" + { + return arm_output_sync_insn (insn, operands); +@@ -549,7 +557,7 @@ + (set_attr "sync_memory" "1") + (set_attr "sync_new_value" "2") + (set_attr "sync_t1" "3") +- (set_attr "sync_t2" "4") ++ (set_attr "sync_t2" "<sync_t2_reqd>") + (set_attr "sync_op" "<sync_optab>") + (set_attr "conds" "clob") + (set_attr "predicable" "no")]) |
