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[Arm] Add 16-bit thumb alternatives to iorsi3_compare0[_scratch]
- From: "Richard Earnshaw (lists)" <Richard dot Earnshaw at arm dot com>
- To: gcc-patches at gcc dot gnu dot org
- Date: Thu, 22 Aug 2019 15:43:07 +0100
- Subject: [Arm] Add 16-bit thumb alternatives to iorsi3_compare0[_scratch]
The iorsi3_compare0 and iorsi3_compare0_scratch patterns can make use of
the 16-bit thumb orrs instruction if suitable registers are allocated.
This patch adds the alternative to allow this to happen.
* config/arm/arm.md (iorsi3_compare0): Add alternative for 16-bit thumb
insn.
(iorsi3_compare0_scratch): Likewise.
Committed to trunk.
R.
diff --git a/gcc/config/arm/arm.md b/gcc/config/arm/arm.md
index 50e1b908f59..4ba246ceeee 100644
--- a/gcc/config/arm/arm.md
+++ b/gcc/config/arm/arm.md
@@ -3339,27 +3339,33 @@ (define_peephole2
(define_insn "*iorsi3_compare0"
[(set (reg:CC_NOOV CC_REGNUM)
- (compare:CC_NOOV (ior:SI (match_operand:SI 1 "s_register_operand" "%r,r")
- (match_operand:SI 2 "arm_rhs_operand" "I,r"))
- (const_int 0)))
- (set (match_operand:SI 0 "s_register_operand" "=r,r")
+ (compare:CC_NOOV
+ (ior:SI (match_operand:SI 1 "s_register_operand" "%r,0,r")
+ (match_operand:SI 2 "arm_rhs_operand" "I,l,r"))
+ (const_int 0)))
+ (set (match_operand:SI 0 "s_register_operand" "=r,l,r")
(ior:SI (match_dup 1) (match_dup 2)))]
"TARGET_32BIT"
"orrs%?\\t%0, %1, %2"
[(set_attr "conds" "set")
- (set_attr "type" "logics_imm,logics_reg")]
+ (set_attr "arch" "*,t2,*")
+ (set_attr "length" "4,2,4")
+ (set_attr "type" "logics_imm,logics_reg,logics_reg")]
)
(define_insn "*iorsi3_compare0_scratch"
[(set (reg:CC_NOOV CC_REGNUM)
- (compare:CC_NOOV (ior:SI (match_operand:SI 1 "s_register_operand" "%r,r")
- (match_operand:SI 2 "arm_rhs_operand" "I,r"))
- (const_int 0)))
- (clobber (match_scratch:SI 0 "=r,r"))]
+ (compare:CC_NOOV
+ (ior:SI (match_operand:SI 1 "s_register_operand" "%r,0,r")
+ (match_operand:SI 2 "arm_rhs_operand" "I,l,r"))
+ (const_int 0)))
+ (clobber (match_scratch:SI 0 "=r,l,r"))]
"TARGET_32BIT"
"orrs%?\\t%0, %1, %2"
[(set_attr "conds" "set")
- (set_attr "type" "logics_imm,logics_reg")]
+ (set_attr "arch" "*,t2,*")
+ (set_attr "length" "4,2,4")
+ (set_attr "type" "logics_imm,logics_reg,logics_reg")]
)
(define_expand "xordi3"