I've checked in the attached patch. The moxie port was emitting
redundant (harmless) zero extend (zex) instructions. This fixes that.
AG
2014-12-30 Anthony Green <gr...@moxielogic.com>
* config/moxie/moxie.md (zero_extendqisi2, zero_extendhisi2):
Switch from define_insn_and_split to define_insn. Fix instruction
length.
Index: gcc/config/moxie/moxie.md
===================================================================
--- gcc/config/moxie/moxie.md (revision 219114)
+++ gcc/config/moxie/moxie.md (working copy)
@@ -268,7 +268,7 @@
ldo.l %0, %1"
[(set_attr "length" "2,2,6,2,6,2,6,4,4")])
-(define_insn_and_split "zero_extendqisi2"
+(define_insn "zero_extendqisi2"
[(set (match_operand:SI 0 "register_operand" "=r,r,r,r")
(zero_extend:SI (match_operand:QI 1 "nonimmediate_operand" "r,W,A,B")))]
""
@@ -277,15 +277,9 @@
ld.b %0, %1
lda.b %0, %1
ldo.b %0, %1"
- "reload_completed"
- [(set (match_dup 2) (match_dup 1))
- (set (match_dup 0) (zero_extend:SI (match_dup 2)))]
-{
- operands[2] = gen_lowpart (QImode, operands[0]);
-}
- [(set_attr "length" "2,2,6,6")])
+ [(set_attr "length" "2,2,6,4")])
-(define_insn_and_split "zero_extendhisi2"
+(define_insn "zero_extendhisi2"
[(set (match_operand:SI 0 "register_operand" "=r,r,r,r")
(zero_extend:SI (match_operand:HI 1 "nonimmediate_operand" "r,W,A,B")))]
""
@@ -294,13 +288,7 @@
ld.s %0, %1
lda.s %0, %1
ldo.s %0, %1"
- "reload_completed"
- [(set (match_dup 2) (match_dup 1))
- (set (match_dup 0) (zero_extend:SI (match_dup 2)))]
-{
- operands[2] = gen_lowpart (HImode, operands[0]);
-}
- [(set_attr "length" "2,2,6,6")])
+ [(set_attr "length" "2,2,6,4")])
(define_insn "extendqisi2"
[(set (match_operand:SI 0 "register_operand" "=r")
