https://bugs.llvm.org/show_bug.cgi?id=40986
Bug ID: 40986
Summary: After r342578, excessive compile time building
opencollada
Product: new-bugs
Version: trunk
Hardware: PC
OS: All
Status: NEW
Severity: enhancement
Priority: P
Component: new bugs
Assignee: unassignedb...@nondot.org
Reporter: dimi...@andric.com
CC: htmldevelo...@gmail.com, llvm-bugs@lists.llvm.org
Created attachment 21571
--> https://bugs.llvm.org/attachment.cgi?id=21571&action=edit
Unreduced test case for opencollada compiler hang
As reported in https://bugs.freebsd.org/236313, building the opencollada port
(see also <https://github.com/KhronosGroup/OpenCOLLADA>) takes an excessive
amount of compile time when -O2 is enabled.
Bisection shows this increase in compile time was introduced by
https://reviews.llvm.org/rL342578 ("[X86] Handle COPYs of physregs better
(regalloc hints)").
I'm attaching the full original test case (8.9M .cpp file, ~231k lines) for
now, since reducing it is rather time consuming.
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