llvm-project/llvm/test/MC/ELF/empty-twice.ll

; Check that there is no persistent state in the ELF emitter that crashes us
; when we try to reuse the pass manager
; RUN: llc -compile-twice -filetype=obj %s -o -

target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f80:32:32-n8:16:32"
target triple = "i386-pc-linux-gnu"
[llc/opt] Add an option to run all passes twice Summary: Lately, I have submitted a number of patches to fix bugs that only occurred when using the same pass manager to compile multiple modules (generally these bugs are failure to reset some persistent state). Unfortunately I don't think there is currently a way to test that from the command line. This adds a very simple flag to both llc and opt, under which the tools will simply re-run their respective pass pipelines using the same pass manager on (a clone of the same module). Additionally, we verify that both outputs are bitwise the same. Reviewers: yaron.keren Subscribers: loladiro, yaron.keren, kcc, llvm-commits Differential Revision: http://reviews.llvm.org/D14965 llvm-svn: 254774 2015-12-05 05:56:46 +08:00			`; Check that there is no persistent state in the ELF emitter that crashes us`
			`; when we try to reuse the pass manager`
			`; RUN: llc -compile-twice -filetype=obj %s -o -`

			`target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f80:32:32-n8:16:32"`
			`target triple = "i386-pc-linux-gnu"`