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generic-poky/meta/recipes-devtools/gcc/gcc-4.6.0/gcc-4_6-branch-backports/0020-config-rx-rx.h-LABEL_A...

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Upstream-Status: Inappropriate [Backport]
From 04688242805dcf2a1e9c8948a3d15611d88c1520 Mon Sep 17 00:00:00 2001
From: nickc <nickc@138bc75d-0d04-0410-961f-82ee72b054a4>
Date: Tue, 29 Mar 2011 12:27:07 +0000
Subject: [PATCH 020/200] * config/rx/rx.h (LABEL_ALIGN_AFTER_BARRIER): Define.
(ASM_OUTPUT_MAX_SKIP): Define.
* config/rx/predicates.md (rx_zs_comparison_operator): Do not
allow LT aor GE comparisons.
* config/rx/rx-protos.h (rx_align_for_label): Prototype.
* config/rx/rx.md: Add peepholes and patterns to combine extending
loads with simple arithmetic instructions.
* config/rx/rx.c (rx_is_legitimate_address): Allow QI and HI modes
to use pre-decrement and post-increment addressing.
(rx_is_restricted_memory_address): For REG+INT addressing, ensure
that the INT is a valid offset.
(rx_print_operand): Handle %R.
Fix %Q's handling of MEMs.
(rx_option_override): Set alignments.
(rx_align_for_label): New function.
(rx_max_skip_for_label): New function.
(TARGET_ASM_JUMP_ALIGN_MAX_SKIP): Define.
(TARGET_ASM_LOOP_ALIGN_MAX_SKIP): Define.
(TARGET_ASM_LABEL_ALIGN_MAX_SKIP): Define.
(TARGET_ASM_LABEL_ALIGN_AFTER_BARRIER_MAX_SKIP): Define.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/branches/gcc-4_6-branch@171659 138bc75d-0d04-0410-961f-82ee72b054a4
index 77b3353..82cac42 100644
--- a/gcc/config/rx/predicates.md
+++ b/gcc/config/rx/predicates.md
@@ -284,7 +284,7 @@
)
(define_predicate "rx_zs_comparison_operator"
- (match_code "eq,ne,lt,ge")
+ (match_code "eq,ne")
)
;; GT and LE omitted due to operand swap required.
diff --git a/gcc/config/rx/rx-protos.h b/gcc/config/rx/rx-protos.h
index a6ae416..e1ab9c2 100644
--- a/gcc/config/rx/rx-protos.h
+++ b/gcc/config/rx/rx-protos.h
@@ -30,16 +30,17 @@ 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 void rx_emit_stack_popm (rtx *, bool);
extern void rx_emit_stack_pushm (rtx *);
extern void rx_expand_epilogue (bool);
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_split_cbranch (Mmode, Rcode, rtx, rtx, rtx);
extern Mmode rx_select_cc_mode (Rcode, rtx, rtx);
-extern bool rx_match_ccmode (rtx, Mmode);
#endif
#endif /* GCC_RX_PROTOS_H */
diff --git a/gcc/config/rx/rx.c b/gcc/config/rx/rx.c
index 6b179e7..ad8d0bb 100644
--- a/gcc/config/rx/rx.c
+++ b/gcc/config/rx/rx.c
@@ -57,7 +57,7 @@ static void rx_print_operand (FILE *, rtx, int);
#define CC_FLAG_Z (1 << 1)
#define CC_FLAG_O (1 << 2)
#define CC_FLAG_C (1 << 3)
-#define CC_FLAG_FP (1 << 4) /* fake, to differentiate CC_Fmode */
+#define CC_FLAG_FP (1 << 4) /* Fake, to differentiate CC_Fmode. */
static unsigned int flags_from_mode (enum machine_mode mode);
static unsigned int flags_from_code (enum rtx_code code);
@@ -85,7 +85,9 @@ rx_is_legitimate_address (Mmode mode, rtx x, bool strict ATTRIBUTE_UNUSED)
/* Register Indirect. */
return true;
- if (GET_MODE_SIZE (mode) == 4
+ if ((GET_MODE_SIZE (mode) == 4
+ || GET_MODE_SIZE (mode) == 2
+ || GET_MODE_SIZE (mode) == 1)
&& (GET_CODE (x) == PRE_DEC || GET_CODE (x) == POST_INC))
/* Pre-decrement Register Indirect or
Post-increment Register Indirect. */
@@ -187,7 +189,10 @@ rx_is_restricted_memory_address (rtx mem, enum machine_mode mode)
base = XEXP (mem, 0);
index = XEXP (mem, 1);
- return RX_REG_P (base) && CONST_INT_P (index);
+ if (! RX_REG_P (base) || ! CONST_INT_P (index))
+ return false;
+
+ return IN_RANGE (INTVAL (index), 0, (0x10000 * GET_MODE_SIZE (mode)) - 1);
case SYMBOL_REF:
/* Can happen when small data is being supported.
@@ -386,11 +391,14 @@ rx_assemble_integer (rtx x, unsigned int size, int is_aligned)
%L Print low part of a DImode register, integer or address.
%N Print the negation of the immediate value.
%Q If the operand is a MEM, then correctly generate
- register indirect or register relative addressing. */
+ register indirect or register relative addressing.
+ %R Like %Q but for zero-extending loads. */
static void
rx_print_operand (FILE * file, rtx op, int letter)
{
+ bool unsigned_load = false;
+
switch (letter)
{
case 'A':
@@ -450,6 +458,7 @@ rx_print_operand (FILE * file, rtx op, int letter)
else
{
unsigned int flags = flags_from_mode (mode);
+
switch (code)
{
case LT:
@@ -588,10 +597,15 @@ rx_print_operand (FILE * file, rtx op, int letter)
rx_print_integer (file, - INTVAL (op));
break;
+ case 'R':
+ gcc_assert (GET_MODE_SIZE (GET_MODE (op)) < 4);
+ unsigned_load = true;
+ /* Fall through. */
case 'Q':
if (MEM_P (op))
{
HOST_WIDE_INT offset;
+ rtx mem = op;
op = XEXP (op, 0);
@@ -626,22 +640,24 @@ rx_print_operand (FILE * file, rtx op, int letter)
rx_print_operand (file, op, 0);
fprintf (file, "].");
- switch (GET_MODE_SIZE (GET_MODE (op)))
+ switch (GET_MODE_SIZE (GET_MODE (mem)))
{
case 1:
- gcc_assert (offset < 65535 * 1);
- fprintf (file, "B");
+ gcc_assert (offset <= 65535 * 1);
+ fprintf (file, unsigned_load ? "UB" : "B");
break;
case 2:
gcc_assert (offset % 2 == 0);
- gcc_assert (offset < 65535 * 2);
- fprintf (file, "W");
+ gcc_assert (offset <= 65535 * 2);
+ fprintf (file, unsigned_load ? "UW" : "W");
break;
- default:
+ case 4:
gcc_assert (offset % 4 == 0);
- gcc_assert (offset < 65535 * 4);
+ gcc_assert (offset <= 65535 * 4);
fprintf (file, "L");
break;
+ default:
+ gcc_unreachable ();
}
break;
}
@@ -2336,6 +2352,13 @@ rx_option_override (void)
flag_strict_volatile_bitfields = 1;
rx_override_options_after_change ();
+
+ if (align_jumps == 0 && ! optimize_size)
+ align_jumps = 3;
+ if (align_loops == 0 && ! optimize_size)
+ align_loops = 3;
+ if (align_labels == 0 && ! optimize_size)
+ align_labels = 3;
}
/* Implement TARGET_OPTION_OPTIMIZATION_TABLE. */
@@ -2728,6 +2751,45 @@ rx_match_ccmode (rtx insn, enum machine_mode cc_mode)
}
+int
+rx_align_for_label (void)
+{
+ return optimize_size ? 1 : 3;
+}
+
+static int
+rx_max_skip_for_label (rtx lab)
+{
+ int opsize;
+ rtx op;
+
+ if (lab == NULL_RTX)
+ return 0;
+ op = lab;
+ do
+ {
+ op = next_nonnote_insn (op);
+ }
+ while (op && (LABEL_P (op)
+ || (INSN_P (op) && GET_CODE (PATTERN (op)) == USE)));
+ if (!op)
+ return 0;
+
+ opsize = get_attr_length (op);
+ if (opsize >= 0 && opsize < 8)
+ return opsize - 1;
+ return 0;
+}
+
+#undef TARGET_ASM_JUMP_ALIGN_MAX_SKIP
+#define TARGET_ASM_JUMP_ALIGN_MAX_SKIP rx_max_skip_for_label
+#undef TARGET_ASM_LOOP_ALIGN_MAX_SKIP
+#define TARGET_ASM_LOOP_ALIGN_MAX_SKIP rx_max_skip_for_label
+#undef TARGET_LABEL_ALIGN_AFTER_BARRIER_MAX_SKIP
+#define TARGET_LABEL_ALIGN_AFTER_BARRIER_MAX_SKIP rx_max_skip_for_label
+#undef TARGET_ASM_LABEL_ALIGN_MAX_SKIP
+#define TARGET_ASM_LABEL_ALIGN_MAX_SKIP rx_max_skip_for_label
+
#undef TARGET_FUNCTION_VALUE
#define TARGET_FUNCTION_VALUE rx_function_value
diff --git a/gcc/config/rx/rx.h b/gcc/config/rx/rx.h
index e3966ed..01fc23b 100644
--- a/gcc/config/rx/rx.h
+++ b/gcc/config/rx/rx.h
@@ -615,4 +615,23 @@ typedef unsigned int CUMULATIVE_ARGS;
#define BRANCH_COST(SPEED,PREDICT) 1
#define REGISTER_MOVE_COST(MODE,FROM,TO) 2
-#define SELECT_CC_MODE(OP,X,Y) rx_select_cc_mode(OP, X, Y)
+#define SELECT_CC_MODE(OP,X,Y) rx_select_cc_mode((OP), (X), (Y))
+
+#define LABEL_ALIGN_AFTER_BARRIER(x) rx_align_for_label ()
+
+#define ASM_OUTPUT_MAX_SKIP_ALIGN(STREAM, LOG, MAX_SKIP) \
+ do \
+ { \
+ if ((LOG) == 0 || (MAX_SKIP) == 0) \
+ break; \
+ if (TARGET_AS100_SYNTAX) \
+ { \
+ if ((LOG) >= 2) \
+ fprintf (STREAM, "\t.ALIGN 4\t; %d alignment actually requested\n", 1 << (LOG)); \
+ else \
+ fprintf (STREAM, "\t.ALIGN 2\n"); \
+ } \
+ else \
+ fprintf (STREAM, "\t.balign %d,3,%d\n", 1 << (LOG), (MAX_SKIP)); \
+ } \
+ while (0)
diff --git a/gcc/config/rx/rx.md b/gcc/config/rx/rx.md
index cd5b571..641f1d4 100644
--- a/gcc/config/rx/rx.md
+++ b/gcc/config/rx/rx.md
@@ -1545,6 +1545,139 @@
(set_attr "length" "3,4,5,6,7,6")]
)
+;; A set of peepholes to catch extending loads followed by arithmetic operations.
+;; We use iterators where possible to reduce the amount of typing and hence the
+;; possibilities for typos.
+
+(define_code_iterator extend_types [(zero_extend "") (sign_extend "")])
+(define_code_attr letter [(zero_extend "R") (sign_extend "Q")])
+
+(define_code_iterator memex_commutative [(plus "") (and "") (ior "") (xor "")])
+(define_code_iterator memex_noncomm [(div "") (udiv "") (minus "")])
+(define_code_iterator memex_nocc [(smax "") (smin "") (mult "")])
+
+(define_code_attr op [(plus "add") (and "and") (div "div") (udiv "divu") (smax "max") (smin "min") (mult "mul") (ior "or") (minus "sub") (xor "xor")])
+
+(define_peephole2
+ [(set (match_operand:SI 0 "register_operand")
+ (extend_types:SI (match_operand:small_int_modes 1 "rx_restricted_mem_operand")))
+ (parallel [(set (match_operand:SI 2 "register_operand")
+ (memex_commutative:SI (match_dup 0)
+ (match_dup 2)))
+ (clobber (reg:CC CC_REG))])]
+ "peep2_regno_dead_p (2, REGNO (operands[0]))"
+ [(parallel [(set:SI (match_dup 2)
+ (memex_commutative:SI (match_dup 2)
+ (extend_types:SI (match_dup 1))))
+ (clobber (reg:CC CC_REG))])]
+)
+
+(define_peephole2
+ [(set (match_operand:SI 0 "register_operand")
+ (extend_types:SI (match_operand:small_int_modes 1 "rx_restricted_mem_operand")))
+ (parallel [(set (match_operand:SI 2 "register_operand")
+ (memex_commutative:SI (match_dup 2)
+ (match_dup 0)))
+ (clobber (reg:CC CC_REG))])]
+ "peep2_regno_dead_p (2, REGNO (operands[0]))"
+ [(parallel [(set:SI (match_dup 2)
+ (memex_commutative:SI (match_dup 2)
+ (extend_types:SI (match_dup 1))))
+ (clobber (reg:CC CC_REG))])]
+)
+
+(define_peephole2
+ [(set (match_operand:SI 0 "register_operand")
+ (extend_types:SI (match_operand:small_int_modes 1 "rx_restricted_mem_operand")))
+ (parallel [(set (match_operand:SI 2 "register_operand")
+ (memex_noncomm:SI (match_dup 2)
+ (match_dup 0)))
+ (clobber (reg:CC CC_REG))])]
+ "peep2_regno_dead_p (2, REGNO (operands[0]))"
+ [(parallel [(set:SI (match_dup 2)
+ (memex_noncomm:SI (match_dup 2)
+ (extend_types:SI (match_dup 1))))
+ (clobber (reg:CC CC_REG))])]
+)
+
+(define_peephole2
+ [(set (match_operand:SI 0 "register_operand")
+ (extend_types:SI (match_operand:small_int_modes 1 "rx_restricted_mem_operand")))
+ (set (match_operand:SI 2 "register_operand")
+ (memex_nocc:SI (match_dup 0)
+ (match_dup 2)))]
+ "peep2_regno_dead_p (2, REGNO (operands[0]))"
+ [(set:SI (match_dup 2)
+ (memex_nocc:SI (match_dup 2)
+ (extend_types:SI (match_dup 1))))]
+)
+
+(define_peephole2
+ [(set (match_operand:SI 0 "register_operand")
+ (extend_types:SI (match_operand:small_int_modes 1 "rx_restricted_mem_operand")))
+ (set (match_operand:SI 2 "register_operand")
+ (memex_nocc:SI (match_dup 2)
+ (match_dup 0)))]
+ "peep2_regno_dead_p (2, REGNO (operands[0]))"
+ [(set:SI (match_dup 2)
+ (memex_nocc:SI (match_dup 2)
+ (extend_types:SI (match_dup 1))))]
+)
+
+(define_insn "*<memex_commutative:code>si3_<extend_types:code><small_int_modes:mode>"
+ [(set (match_operand:SI 0 "register_operand" "=r")
+ (memex_commutative:SI (match_operand:SI 1 "register_operand" "%0")
+ (extend_types:SI (match_operand:small_int_modes 2 "rx_restricted_mem_operand" "Q"))))
+ (clobber (reg:CC CC_REG))]
+ ""
+ "<memex_commutative:op>\t%<extend_types:letter>2, %0"
+ [(set_attr "timings" "33")
+ (set_attr "length" "5")] ;; Worst case sceanario. FIXME: If we defined separate patterns
+) ;; rather than using iterators we could specify exact sizes.
+
+(define_insn "*<memex_noncomm:code>si3_<extend_types:code><small_int_modes:mode>"
+ [(set (match_operand:SI 0 "register_operand" "=r")
+ (memex_noncomm:SI (match_operand:SI 1 "register_operand" "0")
+ (extend_types:SI (match_operand:small_int_modes 2 "rx_restricted_mem_operand" "Q"))))
+ (clobber (reg:CC CC_REG))]
+ ""
+ "<memex_noncomm:op>\t%<extend_types:letter>2, %0"
+ [(set_attr "timings" "33")
+ (set_attr "length" "5")] ;; Worst case sceanario. FIXME: If we defined separate patterns
+) ;; rather than using iterators we could specify exact sizes.
+
+(define_insn "*<memex_nocc:code>si3_<extend_types:code><small_int_modes:mode>"
+ [(set (match_operand:SI 0 "register_operand" "=r")
+ (memex_nocc:SI (match_operand:SI 1 "register_operand" "%0")
+ (extend_types:SI (match_operand:small_int_modes 2 "rx_restricted_mem_operand" "Q"))))]
+ ""
+ "<memex_nocc:op>\t%<extend_types:letter>2, %0"
+ [(set_attr "timings" "33")
+ (set_attr "length" "5")] ;; Worst case sceanario. FIXME: If we defined separate patterns
+) ;; rather than using iterators we could specify exact sizes.
+
+(define_peephole2
+ [(set (match_operand:SI 0 "register_operand")
+ (extend_types:SI (match_operand:small_int_modes 1 "rx_restricted_mem_operand")))
+ (set (reg:CC CC_REG)
+ (compare:CC (match_operand:SI 2 "register_operand")
+ (match_dup 0)))]
+ "peep2_regno_dead_p (2, REGNO (operands[0]))"
+ [(set (reg:CC CC_REG)
+ (compare:CC (match_dup 2)
+ (extend_types:SI (match_dup 1))))]
+)
+
+(define_insn "*comparesi3_<extend_types:code><small_int_modes:mode>"
+ [(set (reg:CC CC_REG)
+ (compare:CC (match_operand:SI 0 "register_operand" "=r")
+ (extend_types:SI (match_operand:small_int_modes 1 "rx_restricted_mem_operand" "Q"))))]
+ ""
+ "cmp\t%<extend_types:letter>1, %0"
+ [(set_attr "timings" "33")
+ (set_attr "length" "5")] ;; Worst case sceanario. FIXME: If we defined separate patterns
+) ;; rather than using iterators we could specify exact sizes.
+
;; Floating Point Instructions
(define_insn "addsf3"
--
1.7.0.4
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