Hi,
While examining the Power MD file seeking the explanation for a problem I
saw I have noticed a change in the past separated one of the instruction
splitters from its corresponding instruction pattern. Several unrelated
patterns were inserted between the two, presumably by accident where the
`patch' tool applied a diff made from an older or modified tree in the
wrong place.
I find this arrangement confusing, so I propose to move the splitter
back, next to the other pattern. Here's the intended update. No
functional change. OK to apply?
2012-08-10 Maciej W. Rozycki <ma...@codesourcery.com>
gcc/
* config/rs6000/rs6000.md: Move a splitter next to its insn.
Maciej
gcc-rs6000-sign-extend-reorder.diff
Index: gcc-fsf-trunk-quilt/gcc/config/rs6000/rs6000.md
===================================================================
--- gcc-fsf-trunk-quilt.orig/gcc/config/rs6000/rs6000.md 2012-05-13
13:50:31.000000000 +0100
+++ gcc-fsf-trunk-quilt/gcc/config/rs6000/rs6000.md 2012-08-10
03:13:05.030525435 +0100
@@ -1048,6 +1048,20 @@
#"
[(set_attr "type" "compare")
(set_attr "length" "4,8")])
+
+(define_split
+ [(set (match_operand:CC 2 "cc_reg_not_micro_cr0_operand" "")
+ (compare:CC (sign_extend:SI (match_operand:HI 1 "gpc_reg_operand" ""))
+ (const_int 0)))
+ (set (match_operand:SI 0 "gpc_reg_operand" "")
+ (sign_extend:SI (match_dup 1)))]
+ "reload_completed"
+ [(set (match_dup 0)
+ (sign_extend:SI (match_dup 1)))
+ (set (match_dup 2)
+ (compare:CC (match_dup 0)
+ (const_int 0)))]
+ "")
;; IBM 405, 440, 464 and 476 half-word multiplication operations.
@@ -1580,20 +1594,6 @@
DONE;
})
-(define_split
- [(set (match_operand:CC 2 "cc_reg_not_micro_cr0_operand" "")
- (compare:CC (sign_extend:SI (match_operand:HI 1 "gpc_reg_operand" ""))
- (const_int 0)))
- (set (match_operand:SI 0 "gpc_reg_operand" "")
- (sign_extend:SI (match_dup 1)))]
- "reload_completed"
- [(set (match_dup 0)
- (sign_extend:SI (match_dup 1)))
- (set (match_dup 2)
- (compare:CC (match_dup 0)
- (const_int 0)))]
- "")
-
;; Fixed-point arithmetic insns.
(define_expand "add<mode>3"
