From: Richard Earnshaw <rearnsha@arm.com>
Date: Thu, 22 Aug 2019 14:40:52 +0000 (+0000)
Subject: [Arm] Add 16-bit thumb alternatives to iorsi3_compare0[_scratch]
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=203ef022c6a0477c33a8cf4a65890e33d0912cf0;p=gcc.git

[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.

From-SVN: r274822
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 271786f27b3..93e8420ea93 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,9 @@
+2019-08-22  Richard Earnshaw  <rearnsha@arm.com>
+
+	* config/arm/arm.md (iorsi3_compare0): Add alternative for 16-bit thumb
+	insn.
+	(iorsi3_compare0_scratch): Likewise.
+
 2019-08-22  Sylvia Taylor  <sylvia.taylor@arm.com>
 
 	* config/aarch64/aarch64-simd-builtins.def:
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_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"