[llvm-exegesis] [PowerPC] Add basic LIT test
Reviewed By: jsji
Differential Revision: https://reviews.llvm.org/D94897
GitOrigin-RevId: d7d4dca15fdaecd368978067fb26d64e96744cb9
diff --git a/test/tools/llvm-exegesis/PowerPC/latency-by-opcode-name.s b/test/tools/llvm-exegesis/PowerPC/latency-by-opcode-name.s
new file mode 100644
index 0000000..a70a22e
--- /dev/null
+++ b/test/tools/llvm-exegesis/PowerPC/latency-by-opcode-name.s
@@ -0,0 +1,11 @@
+# RUN: llvm-exegesis -mode=latency -opcode-name=ADD8 | FileCheck %s
+
+CHECK: ---
+CHECK-NEXT: mode: latency
+CHECK-NEXT: key:
+CHECK-NEXT: instructions:
+CHECK-NEXT: ADD8
+CHECK-NEXT: config: ''
+CHECK-NEXT: register_initial_values:
+CHECK-DAG: - '[[REG1:[A-Z0-9]+]]=0x0'
+CHECK-LAST: ...
diff --git a/test/tools/llvm-exegesis/PowerPC/lit.local.cfg b/test/tools/llvm-exegesis/PowerPC/lit.local.cfg
new file mode 100644
index 0000000..076f218
--- /dev/null
+++ b/test/tools/llvm-exegesis/PowerPC/lit.local.cfg
@@ -0,0 +1,29 @@
+import subprocess
+import lit.util
+
+if not ('PowerPC' in config.root.targets):
+ # We need support for PowerPC.
+ config.unsupported = True
+
+elif not ('powerpc' in config.root.host_triple):
+ # We need to be running on an PPC host.
+ config.unsupported = True
+
+else:
+ # We need libpfm to be installed and allow reading perf counters. We can
+ # only know that at runtime, so we try to measure the latency of an empty
+ # code snippet and bail out on error.
+ llvm_exegesis_exe = lit.util.which('llvm-exegesis', config.llvm_tools_dir)
+ if not llvm_exegesis_exe:
+ print('llvm-exegesis not found')
+ config.unsupported = True
+ else:
+ try:
+ with open(os.devnull, 'w') as quiet:
+ check_llvm_exegesis_result = subprocess.call(
+ [llvm_exegesis_exe, '-mode', 'latency', '-snippets-file', '/dev/null'], stdout=quiet, stderr=quiet)
+ except OSError:
+ print('could not exec llvm-exegesis')
+ config.unsupported = True
+ if not check_llvm_exegesis_result == 0:
+ config.unsupported = True
