llvm-6502/test/CodeGen/Generic/stop-after.ll

; RUN: llc < %s -debug-pass=Structure -stop-after=loop-reduce -o /dev/null 2>&1 | FileCheck %s -check-prefix=STOP
; RUN: llc < %s -debug-pass=Structure -start-after=loop-reduce -o /dev/null 2>&1 | FileCheck %s -check-prefix=START

; STOP: -loop-reduce -print-module
; STOP: Loop Strength Reduction
; STOP-NEXT: Machine Function Analysis

; START: -machine-branch-prob -gc-lowering
; START: FunctionPass Manager
; START-NEXT: Lower Garbage Collection Instructions
Extend TargetPassConfig to allow running only a subset of the normal passes. This is still a work in progress but I believe it is currently good enough to fix PR13122 "Need unit test driver for codegen IR passes". For example, you can run llc with -stop-after=loop-reduce to have it dump out the IR after running LSR. Serializing machine-level IR is not yet supported but we have some patches in progress for that. The plan is to serialize the IR to a YAML file, containing separate sections for the LLVM IR, machine-level IR, and whatever other info is needed. Chad suggested that we stash the stop-after pass in the YAML file and use that instead of the start-after option to figure out where to restart the compilation. I think that's a great idea, but since it's not implemented yet I put the -start-after option into this patch for testing purposes. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159570 91177308-0d34-0410-b5e6-96231b3b80d8 2012-07-02 19:48:45 +00:00			`; RUN: llc < %s -debug-pass=Structure -stop-after=loop-reduce -o /dev/null 2>&1 \| FileCheck %s -check-prefix=STOP`
			`; RUN: llc < %s -debug-pass=Structure -start-after=loop-reduce -o /dev/null 2>&1 \| FileCheck %s -check-prefix=START`

			`; STOP: -loop-reduce -print-module`
			`; STOP: Loop Strength Reduction`
			`; STOP-NEXT: Machine Function Analysis`

			`; START: -machine-branch-prob -gc-lowering`
			`; START: FunctionPass Manager`
			`; START-NEXT: Lower Garbage Collection Instructions`