[llvm-exegesis] Add lit tests.

Summary:
Right now we only have unit tests. This will allow testing the whole
tool. Even though We can't really check actual values, this will avoid
regressions such as PR39055.

Reviewers: gchatelet, alexshap

Subscribers: mgorny, tschuett, llvm-commits

Differential Revision: https://reviews.llvm.org/D52407

llvm-svn: 342953

test/CMakeLists.txt

@@ -60,6 +60,7 @@ set(LLVM_TEST_DEPENDS
           dsymutil
           llvm-dwarfdump
           llvm-dwp
+          llvm-exegesis
           llvm-extract
           llvm-isel-fuzzer
           llvm-lib

test/lit.cfg.py

@@ -140,16 +140,17 @@ tools = [
 
 # FIXME: Why do we have both `lli` and `%lli` that do slightly different things?
 tools.extend([
-    'dsymutil', 'lli', 'lli-child-target', 'llvm-ar', 'llvm-as', 'llvm-bcanalyzer',
-    'llvm-config', 'llvm-cov', 'llvm-cxxdump', 'llvm-cvtres', 'llvm-diff', 'llvm-dis',
-    'llvm-dwarfdump', 'llvm-extract', 'llvm-isel-fuzzer', 'llvm-opt-fuzzer', 'llvm-lib',
-    'llvm-link', 'llvm-lto', 'llvm-lto2', 'llvm-mc', 'llvm-mca',
-    'llvm-modextract', 'llvm-nm', 'llvm-objcopy', 'llvm-objdump',
-    'llvm-pdbutil', 'llvm-profdata', 'llvm-ranlib', 'llvm-readobj',
-    'llvm-rtdyld', 'llvm-size', 'llvm-split', 'llvm-strings', 'llvm-strip', 'llvm-tblgen',
-    'llvm-undname', 'llvm-c-test', 'llvm-cxxfilt', 'llvm-xray', 'yaml2obj', 'obj2yaml',
-    'yaml-bench', 'verify-uselistorder',
-    'bugpoint', 'llc', 'llvm-symbolizer', 'opt', 'sancov', 'sanstats'])
+    'dsymutil', 'lli', 'lli-child-target', 'llvm-ar', 'llvm-as',
+    'llvm-bcanalyzer', 'llvm-config', 'llvm-cov', 'llvm-cxxdump', 'llvm-cvtres',
+    'llvm-diff', 'llvm-dis', 'llvm-dwarfdump', 'llvm-exegesis', 'llvm-extract',
+    'llvm-isel-fuzzer', 'llvm-opt-fuzzer', 'llvm-lib', 'llvm-link', 'llvm-lto',
+    'llvm-lto2', 'llvm-mc', 'llvm-mca', 'llvm-modextract', 'llvm-nm',
+    'llvm-objcopy', 'llvm-objdump', 'llvm-pdbutil', 'llvm-profdata',
+    'llvm-ranlib', 'llvm-readobj', 'llvm-rtdyld', 'llvm-size', 'llvm-split',
+    'llvm-strings', 'llvm-strip', 'llvm-tblgen', 'llvm-undname', 'llvm-c-test',
+    'llvm-cxxfilt', 'llvm-xray', 'yaml2obj', 'obj2yaml', 'yaml-bench',
+    'verify-uselistorder', 'bugpoint', 'llc', 'llvm-symbolizer', 'opt',
+    'sancov', 'sanstats'])
 
 # The following tools are optional
 tools.extend([

test/tools/llvm-exegesis/X86/latency-by-opcode-name.s

@@ -0,0 +1,6 @@
+# RUN: llvm-exegesis -mode=latency -opcode-name=ADD32rr | FileCheck %s
+
+CHECK:      mode:            latency
+CHECK-NEXT: key:
+CHECK-NEXT:   instructions:
+CHECK-NEXT:     ADD32rr

test/tools/llvm-exegesis/X86/lit.local.cfg

@@ -0,0 +1,7 @@
+# We need support for X86.
+if not ('X86' in config.root.targets):
+    config.unsupported = True
+
+# And we need to be running on an X86 host.
+if not ('x86_64' in config.root.host_triple):
+        config.unsupported = True

test/tools/llvm-exegesis/X86/uops-by-opcode-name.s

@@ -0,0 +1,6 @@
+# RUN: llvm-exegesis -mode=uops -opcode-name=ADD32rr | FileCheck %s
+
+CHECK:      mode:            uops
+CHECK-NEXT: key:
+CHECK-NEXT:   instructions:
+CHECK-NEXT:     ADD32rr

test/tools/llvm-exegesis/lit.local.cfg

@@ -0,0 +1,2 @@
+if 'native' not in config.available_features:
+    config.unsupported = True