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Bug 33833 - SelectionDAG crashes on optnone function after r308025
Summary: SelectionDAG crashes on optnone function after r308025
Status: RESOLVED DUPLICATE of bug 32515
Alias: None
Product: new-bugs
Classification: Unclassified
Component: new bugs (show other bugs)
Version: unspecified
Hardware: PC Linux
: P enhancement
Assignee: Unassigned LLVM Bugs
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2017-07-18 00:49 PDT by Chandler Carruth
Modified: 2017-07-18 10:43 PDT (History)
2 users (show)

See Also:
Fixed By Commit(s):

Attachments
reduced IR test case (2.89 KB, text/plain)
2017-07-18 00:49 PDT, Chandler Carruth 		Details
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Description Chandler Carruth 2017-07-18 00:49:08 PDT 
Created attachment 18814 [details]
reduced IR test case

After r308025, SelectionDAG crashes while compiling the file:
https://github.com/xiph/speex/blob/master/libspeex/testenc.c

(Possibly some older version of it, I haven't checked...)

I'm attaching a minimized test case that pretty clearly shows the bug. It seems specific to O0 (optnone attribute is applied).

Because this is blocking even unoptimized builds I'm going to revert the patch while it gets investigated.
Comment 1 Nirav Dave 2017-07-18 10:43:29 PDT 

*** This bug has been marked as a duplicate of bug 32515 ***