llc: Add a 'run-pass' option.
This commit adds a 'run-pass' option to llc, which instructs the compiler to run
one specific code generation pass only.
Llc already has the 'start-after' and the 'stop-after' options, and this new
option complements the other two by making it easier to write tests that want
to invoke a single pass only.
Reviewers: Duncan P. N. Exon Smith
Differential Revision: http://reviews.llvm.org/D10776
llvm-svn: 241476
diff --git a/llvm/test/CodeGen/Generic/run-pass.ll b/llvm/test/CodeGen/Generic/run-pass.ll
new file mode 100644
index 0000000..55d62ec
--- /dev/null
+++ b/llvm/test/CodeGen/Generic/run-pass.ll
@@ -0,0 +1,7 @@
+; RUN: llc < %s -debug-pass=Structure -run-pass=gc-lowering -o /dev/null 2>&1 | FileCheck %s
+
+; CHECK: -gc-lowering
+; CHECK: FunctionPass Manager
+; CHECK-NEXT: Lower Garbage Collection Instructions
+; CHECK-NEXT: Machine Function Analysis
+; CHECK-NEXT: MIR Printing Pass