[mlir][arith] Fix constant naming in integration tests. NFC.

Suggested by @antiagainst in D134321.

Author: kuhar

mlir/test/Integration/Dialect/Arithmetic/CPU/test-wide-int-emulation-addi-i16.mlir

@@ -29,8 +29,8 @@ func.func @check_addi(%lhs : i16, %rhs : i16) -> () {
 func.func @entry() {
   %cst0 = arith.constant 0 : i16
   %cst1 = arith.constant 1 : i16
-  %cst_1 = arith.constant -1 : i16
-  %cst_3 = arith.constant -3 : i16
+  %cst_n1 = arith.constant -1 : i16
+  %cst_n3 = arith.constant -3 : i16
 
   %cst13 = arith.constant 13 : i16
   %cst37 = arith.constant 37 : i16
@@ -47,11 +47,11 @@ func.func @entry() {
   // CHECK-NEXT: 2
   func.call @check_addi(%cst1, %cst1) : (i16, i16) -> ()
   // CHECK-NEXT: 0
-  func.call @check_addi(%cst1, %cst_1) : (i16, i16) -> ()
+  func.call @check_addi(%cst1, %cst_n1) : (i16, i16) -> ()
   // CHECK-NEXT: -2
-  func.call @check_addi(%cst_1, %cst_1) : (i16, i16) -> ()
+  func.call @check_addi(%cst_n1, %cst_n1) : (i16, i16) -> ()
   // CHECK-NEXT: -2
-  func.call @check_addi(%cst1, %cst_3) : (i16, i16) -> ()
+  func.call @check_addi(%cst1, %cst_n3) : (i16, i16) -> ()
 
   // CHECK-NEXT: 26
   func.call @check_addi(%cst13, %cst13) : (i16, i16) -> ()
@@ -61,13 +61,13 @@ func.func @entry() {
   func.call @check_addi(%cst37, %cst42) : (i16, i16) -> ()
 
   // CHECK-NEXT: 255
-  func.call @check_addi(%cst_1, %cst256) : (i16, i16) -> ()
+  func.call @check_addi(%cst_n1, %cst256) : (i16, i16) -> ()
   // CHECK-NEXT: 269
   func.call @check_addi(%cst256, %cst13) : (i16, i16) -> ()
   // CHECK-NEXT: 293
   func.call @check_addi(%cst256, %cst37) : (i16, i16) -> ()
   // CHECK-NEXT: 253
-  func.call @check_addi(%cst256, %cst_3) : (i16, i16) -> ()
+  func.call @check_addi(%cst256, %cst_n3) : (i16, i16) -> ()
 
   // CHECK-NEXT: -32756
   func.call @check_addi(%cst13, %cst_i16_max) : (i16, i16) -> ()

mlir/test/Integration/Dialect/Arithmetic/CPU/test-wide-int-emulation-constants-i16.mlir

@@ -21,8 +21,8 @@ func.func @emulate_constant(%first : i16) {
 
   %cst0 = arith.constant 0 : i16
   %cst1 = arith.constant 1 : i16
-  %cst_1 = arith.constant -1 : i16
-  %cst_3 = arith.constant -3 : i16
+  %cst_n1 = arith.constant -1 : i16
+  %cst_n3 = arith.constant -3 : i16
 
   %cst13 = arith.constant 13 : i16
   %cst256 = arith.constant 256 : i16
@@ -36,9 +36,9 @@ func.func @emulate_constant(%first : i16) {
   vector.print %cst1 : i16
 
   // EMULATED-NEXT: ( -1, -1 )
-  vector.print %cst_1 : i16
+  vector.print %cst_n1 : i16
   // EMULATED-NEXT: ( -3, -1 )
-  vector.print %cst_3 : i16
+  vector.print %cst_n3 : i16
 
   // EMULATED-NEXT: ( 13, 0 )
   vector.print %cst13 : i16

mlir/test/Integration/Dialect/Arithmetic/CPU/test-wide-int-emulation-muli-i16.mlir

@@ -29,8 +29,8 @@ func.func @check_muli(%lhs : i16, %rhs : i16) -> () {
 func.func @entry() {
   %cst0 = arith.constant 0 : i16
   %cst1 = arith.constant 1 : i16
-  %cst_1 = arith.constant -1 : i16
-  %cst_3 = arith.constant -3 : i16
+  %cst_n1 = arith.constant -1 : i16
+  %cst_n3 = arith.constant -3 : i16
 
   %cst13 = arith.constant 13 : i16
   %cst37 = arith.constant 37 : i16
@@ -47,11 +47,11 @@ func.func @entry() {
   // CHECK-NEXT: 1
   func.call @check_muli(%cst1, %cst1) : (i16, i16) -> ()
   // CHECK-NEXT: -1
-  func.call @check_muli(%cst1, %cst_1) : (i16, i16) -> ()
+  func.call @check_muli(%cst1, %cst_n1) : (i16, i16) -> ()
   // CHECK-NEXT: 1
-  func.call @check_muli(%cst_1, %cst_1) : (i16, i16) -> ()
+  func.call @check_muli(%cst_n1, %cst_n1) : (i16, i16) -> ()
   // CHECK-NEXT: -3
-  func.call @check_muli(%cst1, %cst_3) : (i16, i16) -> ()
+  func.call @check_muli(%cst1, %cst_n3) : (i16, i16) -> ()
 
   // CHECK-NEXT: 169
   func.call @check_muli(%cst13, %cst13) : (i16, i16) -> ()
@@ -61,13 +61,13 @@ func.func @entry() {
   func.call @check_muli(%cst37, %cst42) : (i16, i16) -> ()
 
   // CHECK-NEXT: -256
-  func.call @check_muli(%cst_1, %cst256) : (i16, i16) -> ()
+  func.call @check_muli(%cst_n1, %cst256) : (i16, i16) -> ()
   // CHECK-NEXT: 3328
   func.call @check_muli(%cst256, %cst13) : (i16, i16) -> ()
   // CHECK-NEXT: 9472
   func.call @check_muli(%cst256, %cst37) : (i16, i16) -> ()
   // CHECK-NEXT: -768
-  func.call @check_muli(%cst256, %cst_3) : (i16, i16) -> ()
+  func.call @check_muli(%cst256, %cst_n3) : (i16, i16) -> ()
 
   // CHECK-NEXT: 32755
   func.call @check_muli(%cst13, %cst_i16_max) : (i16, i16) -> ()

mlir/test/Integration/Dialect/Arithmetic/CPU/test-wide-int-emulation-shrui-i16.mlir

@@ -35,8 +35,7 @@ func.func @entry() {
   %cst9 = arith.constant 9 : i16
   %cst15 = arith.constant 15 : i16
 
-  %cst_1 = arith.constant -1 : i16
-  %cst_3 = arith.constant -3 : i16
+  %cst_n1 = arith.constant -1 : i16
 
   %cst1337 = arith.constant 1337 : i16
 
@@ -52,8 +51,8 @@ func.func @entry() {
   func.call @check_shrui(%cst0, %cst1) : (i16, i16) -> ()
   func.call @check_shrui(%cst1, %cst1) : (i16, i16) -> ()
   func.call @check_shrui(%cst1, %cst0) : (i16, i16) -> ()
-  func.call @check_shrui(%cst_1, %cst1) : (i16, i16) -> ()
-  func.call @check_shrui(%cst_1, %cst15) : (i16, i16) -> ()
+  func.call @check_shrui(%cst_n1, %cst1) : (i16, i16) -> ()
+  func.call @check_shrui(%cst_n1, %cst15) : (i16, i16) -> ()
 
   // CHECK-NEXT: 1337
   // CHECK-NEXT: 334