2007-07-02 Richard Guenther <rguenther@suse.de>

[pf3gnuchains/gcc-fork.git] / gcc / predict.def

diff --git a/gcc/predict.def b/gcc/predict.def
index 997f4d2..cf31442 100644 (file)
--- a/gcc/predict.def
+++ b/gcc/predict.def
@@ -52,9 +52,9 @@ DEF_PREDICTOR (PRED_NO_PREDICTION, "no prediction", PROB_ALWAYS, 0)
 DEF_PREDICTOR (PRED_UNCONDITIONAL, "unconditional jump", PROB_ALWAYS,
               PRED_FLAG_FIRST_MATCH)
 
-/* Use number of loop iterations determined by loop unroller to set
-   probability.  We don't want to use Dempster-Shaffer theory here,
-   as the predictions is exact.  */
+/* Use number of loop iterations determined by # of iterations
+   analysis to set probability.  We don't want to use Dempster-Shaffer
+   theory here, as the predictions is exact.  */
 DEF_PREDICTOR (PRED_LOOP_ITERATIONS, "loop iterations", PROB_ALWAYS,
               PRED_FLAG_FIRST_MATCH)
 
@@ -62,6 +62,10 @@ DEF_PREDICTOR (PRED_LOOP_ITERATIONS, "loop iterations", PROB_ALWAYS,
 DEF_PREDICTOR (PRED_BUILTIN_EXPECT, "__builtin_expect", PROB_VERY_LIKELY,
               PRED_FLAG_FIRST_MATCH)
 
+/* Use number of loop iterations guessed by the contents of the loop.  */
+DEF_PREDICTOR (PRED_LOOP_ITERATIONS_GUESSED, "guessed loop iterations",
+              PROB_ALWAYS, PRED_FLAG_FIRST_MATCH)
+
 /* Branch containing goto is probably not taken.  */
 DEF_PREDICTOR (PRED_CONTINUE, "continue", HITRATE (56), 0)
 
@@ -69,54 +73,47 @@ DEF_PREDICTOR (PRED_CONTINUE, "continue", HITRATE (56), 0)
 DEF_PREDICTOR (PRED_NORETURN, "noreturn call", HITRATE (99),
               PRED_FLAG_FIRST_MATCH)
 
+/* Branch to basic block containing call marked by cold function attribute.  */
+DEF_PREDICTOR (PRED_COLD_FUNCTION, "cold function call", HITRATE (99),
+              PRED_FLAG_FIRST_MATCH)
+
 /* Loopback edge is taken.  */
-DEF_PREDICTOR (PRED_LOOP_BRANCH, "loop branch", HITRATE (89),
+DEF_PREDICTOR (PRED_LOOP_BRANCH, "loop branch", HITRATE (86),
               PRED_FLAG_FIRST_MATCH)
 
 /* Edge causing loop to terminate is probably not taken.  */
-DEF_PREDICTOR (PRED_LOOP_EXIT, "loop exit", HITRATE (90),
+DEF_PREDICTOR (PRED_LOOP_EXIT, "loop exit", HITRATE (91),
               PRED_FLAG_FIRST_MATCH)
 
-/* Condition emitted by preconditiong code to ensure that variable
-   setting number of iterations is greater than initial value of iterator.  */
-DEF_PREDICTOR (PRED_LOOP_CONDITION, "loop condition", PROB_VERY_LIKELY, 0)
-
-/* Preconditioning makes linear list of branches.  */
-DEF_PREDICTOR (PRED_LOOP_PRECONDITIONING, "loop preconditioning", PROB_VERY_LIKELY, 0)
-
-/* Copied condition for the first iteration of loop is probably true.  */
-DEF_PREDICTOR (PRED_LOOP_HEADER, "loop header", HITRATE (64), 0)
-
 /* Pointers are usually not NULL.  */
-DEF_PREDICTOR (PRED_POINTER, "pointer", HITRATE (81), 0)
-DEF_PREDICTOR (PRED_TREE_POINTER, "pointer (on trees)", HITRATE (81), 0)
+DEF_PREDICTOR (PRED_POINTER, "pointer", HITRATE (85), 0)
+DEF_PREDICTOR (PRED_TREE_POINTER, "pointer (on trees)", HITRATE (85), 0)
 
 /* NE is probable, EQ not etc...  */
 DEF_PREDICTOR (PRED_OPCODE_POSITIVE, "opcode values positive", HITRATE (79), 0)
 DEF_PREDICTOR (PRED_OPCODE_NONEQUAL, "opcode values nonequal", HITRATE (71), 0)
 DEF_PREDICTOR (PRED_FPOPCODE, "fp_opcode", HITRATE (90), 0)
-DEF_PREDICTOR (PRED_TREE_OPCODE_POSITIVE, "opcode values positive (on trees)", HITRATE (79), 0)
-DEF_PREDICTOR (PRED_TREE_OPCODE_NONEQUAL, "opcode values nonequal (on trees)", HITRATE (71), 0)
+DEF_PREDICTOR (PRED_TREE_OPCODE_POSITIVE, "opcode values positive (on trees)", HITRATE (70), 0)
+DEF_PREDICTOR (PRED_TREE_OPCODE_NONEQUAL, "opcode values nonequal (on trees)", HITRATE (69), 0)
 DEF_PREDICTOR (PRED_TREE_FPOPCODE, "fp_opcode (on trees)", HITRATE (90), 0)
 
 /* Branch guarding call is probably taken.  */
-DEF_PREDICTOR (PRED_CALL, "call", HITRATE (70), 0)
+DEF_PREDICTOR (PRED_CALL, "call", HITRATE (69), 0)
 
 /* Branch causing function to terminate is probably not taken.  */
-DEF_PREDICTOR (PRED_EARLY_RETURN, "early return", HITRATE (67), 0)
-DEF_PREDICTOR (PRED_TREE_EARLY_RETURN, "early return (on trees)", HITRATE (67), 0)
+DEF_PREDICTOR (PRED_TREE_EARLY_RETURN, "early return (on trees)", HITRATE (54), 0)
 
 /* Branch containing goto is probably not taken.  */
 DEF_PREDICTOR (PRED_GOTO, "goto", HITRATE (70), 0)
 
 /* Branch ending with return constant is probably not taken.  */
-DEF_PREDICTOR (PRED_CONST_RETURN, "const return", HITRATE (95), 0)
+DEF_PREDICTOR (PRED_CONST_RETURN, "const return", HITRATE (67), 0)
 
 /* Branch ending with return negative constant is probably not taken.  */
 DEF_PREDICTOR (PRED_NEGATIVE_RETURN, "negative return", HITRATE (96), 0)
 
 /* Branch ending with return; is probably not taken */
-DEF_PREDICTOR (PRED_NULL_RETURN, "null return", HITRATE (90), 0)
+DEF_PREDICTOR (PRED_NULL_RETURN, "null return", HITRATE (96), 0)
 
 /* Branches to a mudflap bounds check are extremely unlikely.  */
-DEF_PREDICTOR (PRED_MUDFLAP, "mudflap check", HITRATE (99), 0)
+DEF_PREDICTOR (PRED_MUDFLAP, "mudflap check", PROB_VERY_LIKELY, 0)