UpdateTestChecks: squelch warning on SCEV output (#67443)

update_analyze_test_checks.py currently outputs a warning when updating
a script with the run line:

  $ opt -passes='print<scalar-evolution>'

saying that the script doesn't support its output, when it indeed does,
as evidenced by several tests in test/Analysis/ScalarEvolution generated
by this script. There is even a test for update_analyze_test_checks that
makes sure that SCEV output is supported. Hence, squelch the warning.

While at it, rename the update_analyze_test_checks test from basic.ll to
a more explicit scev.ll.

1 files changed, 5 insertions, 1 deletions

diff --git a/llvm/utils/UpdateTestChecks/common.py b/llvm/utils/UpdateTestChecks/common.py
index 22c0532..c8c8d85 100644
--- a/llvm/utils/UpdateTestChecks/common.py
+++ b/llvm/utils/UpdateTestChecks/common.py
@@ -767,7 +767,11 @@ class FunctionTestBuilder:
             )
             if "analysis" in m.groupdict():
                 analysis = m.group("analysis")
-                if analysis.lower() != "cost model analysis":
+                supported_analyses = {
+                    "cost model analysis",
+                    "scalar evolution analysis",
+                }
+                if analysis.lower() not in supported_analyses:
                     warn("Unsupported analysis mode: %r!" % (analysis,))
             if func.startswith("stress"):
                 # We only use the last line of the function body for stress tests.