update_test_checks: fix a simple regression (#111347)

Reported-by: Yingwei Zheng <[email protected]>
Fixes: 02debce ("update_test_checks: improve IR value name
stability (#110940)")

Author: nhaehnle

llvm/test/tools/UpdateTestChecks/update_test_checks/Inputs/stable_ir_values6.ll

@@ -0,0 +1,16 @@
+; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 5
+; RUN: opt < %s -S | FileCheck %s
+
+; Test case where the same meta variable appears twice in a line
+
+define i8 @test(i8 %p) {
+; CHECK-LABEL: define i8 @test(
+; CHECK-SAME: i8 [[P:%.*]]) {
+; CHECK-NEXT:    [[Q:%.*]] = add i8 [[P]], 1
+; CHECK-NEXT:    [[X:%.*]] = mul i8 [[Q]], [[Q]]
+; CHECK-NEXT:    ret i8 [[X]]
+;
+  %r = sub i8 %p, 1
+  %x = mul i8 %r, %r
+  ret i8 %x
+}

llvm/test/tools/UpdateTestChecks/update_test_checks/Inputs/stable_ir_values6.ll.expected

@@ -0,0 +1,16 @@
+; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 5
+; RUN: opt < %s -S | FileCheck %s
+
+; Test case where the same meta variable appears twice in a line
+
+define i8 @test(i8 %p) {
+; CHECK-LABEL: define i8 @test(
+; CHECK-SAME: i8 [[P:%.*]]) {
+; CHECK-NEXT:    [[Q:%.*]] = sub i8 [[P]], 1
+; CHECK-NEXT:    [[X:%.*]] = mul i8 [[Q]], [[Q]]
+; CHECK-NEXT:    ret i8 [[X]]
+;
+  %r = sub i8 %p, 1
+  %x = mul i8 %r, %r
+  ret i8 %x
+}

llvm/test/tools/UpdateTestChecks/update_test_checks/stable_ir_values6.test

@@ -0,0 +1,2 @@
+# RUN: cp -f %S/Inputs/stable_ir_values6.ll %t.ll && %update_test_checks %t.ll
+# RUN: diff -u %t.ll %S/Inputs/stable_ir_values6.ll.expected

llvm/utils/UpdateTestChecks/common.py

@@ -1603,7 +1603,7 @@ def __init__(self):
 
                 if rhs_value.name in new_color.mapping:
                     # Same, but for a possible commit happening on the same line
-                    if new_color.color[rhs_value.name] == lhs_value.name:
+                    if new_color.mapping[rhs_value.name] == lhs_value.name:
                         continue
                     else:
                         break