[ARM] Add support for ORR and ORN instruction substitutions

Recently support was added for substituting one intruction for another by
negating or inverting the immediate, but ORR and ORN were missed so this patch
adds them.

This one is slightly different to the others in that ORN only exists in thumb,
so we only do the substitution in thumb.

Differential Revision: https://reviews.llvm.org/D32534


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@302224 91177308-0d34-0410-b5e6-96231b3b80d8

lib/Target/ARM/ARMInstrThumb2.td

@@ -4706,6 +4706,19 @@ def : t2InstSubst<"and${s}${p} $Rd, $Rn, $imm",
 def : t2InstSubst<"and${s}${p} $Rdn, $imm",
                   (t2BICri rGPR:$Rdn, rGPR:$Rdn, t2_so_imm_not:$imm,
                            pred:$p, cc_out:$s)>;
+// And ORR <--> ORN
+def : t2InstSubst<"orn${s}${p} $Rd, $Rn, $imm",
+                  (t2ORRri rGPR:$Rd, rGPR:$Rn, t2_so_imm_not:$imm,
+                           pred:$p, cc_out:$s)>;
+def : t2InstSubst<"orn${s}${p} $Rdn, $imm",
+                  (t2ORRri rGPR:$Rdn, rGPR:$Rdn, t2_so_imm_not:$imm,
+                           pred:$p, cc_out:$s)>;
+def : t2InstSubst<"orr${s}${p} $Rd, $Rn, $imm",
+                  (t2ORNri rGPR:$Rd, rGPR:$Rn, t2_so_imm_not:$imm,
+                           pred:$p, cc_out:$s)>;
+def : t2InstSubst<"orr${s}${p} $Rdn, $imm",
+                  (t2ORNri rGPR:$Rdn, rGPR:$Rdn, t2_so_imm_not:$imm,
+                           pred:$p, cc_out:$s)>;
 // Likewise, "add Rd, t2_so_imm_neg" -> sub
 def : t2InstSubst<"add${s}${p} $Rd, $Rn, $imm",
                   (t2SUBri GPRnopc:$Rd, GPRnopc:$Rn, t2_so_imm_neg:$imm,

test/MC/ARM/negative-immediates-fail.s

@@ -11,3 +11,8 @@ ADC r0, r1, #0xFFFFFE02
 
 ADD.W r0, r0, #0xFF01FF01
 # CHECK: error: immediate operand must be in the range [0,7]
+
+ORR r0, r1, #0xFFFFFF00
+# CHECK: error: instruction requires: thumb2
+ORN r0, r1, #0xFFFFFF00
+# CHECK: error: instruction requires: thumb2

test/MC/ARM/negative-immediates-thumb1-fail.s

@@ -13,3 +13,8 @@ SUBs r1, r0, #0xFFFFFFF5
 
 SUBs r0, #0xFFFFFEFF
 # CHECK: error: immediate operand must be in the range [0,255]
+
+ORRs r0, r1, #0xFFFFFF00
+# CHECK: error: instruction requires: thumb2
+ORNs r0, r1, #0xFFFFFF00
+# CHECK: error: instruction requires: thumb2

test/MC/ARM/negative-immediates.s

@@ -98,6 +98,22 @@
 # CHECK: and r0, r1, #16777472 @ encoding: [0x01,0xf0,0x01,0x20]
 # CHECK-DISABLED: error: instruction requires: NegativeImmediates
 # CHECK-DISABLED: BIC
+	ORR r0, r1, #0xFFFFFF00
+# CHECK-DISABLED: error: instruction requires: NegativeImmediates
+# CHECK-DISABLED: ORR
+# CHECK: orn r0, r1, #255
+	ORR r0, r1, #0xFEFFFEFF
+# CHECK: orn r0, r1, #16777472 @ encoding: [0x61,0xf0,0x01,0x20]
+# CHECK-DISABLED: error: instruction requires: NegativeImmediates
+# CHECK-DISABLED: ORR
+	ORN r0, r1, #0xFFFFFF00
+# CHECK: orr r0, r1, #255
+# CHECK-DISABLED: error: instruction requires: NegativeImmediates
+# CHECK-DISABLED: ORN
+	ORN r0, r1, #0xFEFFFEFF
+# CHECK: orr r0, r1, #16777472 @ encoding: [0x41,0xf0,0x01,0x20]
+# CHECK-DISABLED: error: instruction requires: NegativeImmediates
+# CHECK-DISABLED: ORN
 	CMP r0, #0xFFFFFF01
 # CHECK: cmn.w r0, #255
 # CHECK-DISABLED: error: instruction requires: NegativeImmediates