[RISCV] Add -print-pipeline-passes test as follow up to #156798. NFC

[topperc]

No description provided.

[llvmbot]

@llvm/pr-subscribers-backend-risc-v

Author: Craig Topper (topperc)

Changes

---

Full diff: https://github.com/llvm/llvm-project/pull/157011.diff

1 Files Affected:

• (added) llvm/test/CodeGen/RISCV/print-pipeline-passes.ll (+12)

diff --git a/llvm/test/CodeGen/RISCV/print-pipeline-passes.ll b/llvm/test/CodeGen/RISCV/print-pipeline-passes.ll
new file mode 100644
index 0000000000000..e1125a60a1217
--- /dev/null
+++ b/llvm/test/CodeGen/RISCV/print-pipeline-passes.ll
@@ -0,0 +1,12 @@
+; RUN: opt -mtriple=riscv32 -S -passes='default<O0>' -print-pipeline-passes < %s | FileCheck --check-prefix=O0 %s
+; RUN: opt -mtriple=riscv64 -S -passes='default<O0>' -print-pipeline-passes < %s | FileCheck --check-prefix=O0 %s
+; RUN: opt -mtriple=riscv32 -S -passes='default<O2>' -print-pipeline-passes < %s | FileCheck %s
+; RUN: opt -mtriple=riscv64 -S -passes='default<O2>' -print-pipeline-passes < %s | FileCheck %s
+
+; CHECK: loop-idiom-vectorize
+; O0-NOT: loop-idiom-vectorize
+
+define void @foo() {
+entry:
+  ret void
+}