http://llvm.org/bugs/show_bug.cgi?id=11318
Bug #: 11318
Summary: Cannot select v4i32 = BUILD_VECTOR error from short
program
Product: new-bugs
Version: trunk
Platform: PC
OS/Version: All
Status: NEW
Severity: normal
Priority: P
Component: new bugs
AssignedTo: [email protected]
ReportedBy: [email protected]
CC: [email protected]
Classification: Unclassified
Created attachment 7581
--> http://llvm.org/bugs/attachment.cgi?id=7581
test case
With the attached short program, I'm seeing:
% llc bugpoint-reduced-simplified.ll -mattr=+avx
LLVM ERROR: Cannot select: 0x7f906a839110: v4i32 = BUILD_VECTOR 0x7f906a832710,
0x7f906a832710, 0x7f906a832710, 0x7f906a832710 [ID=10]
0x7f906a832710: i32 = Constant<15> [ORD=2] [ID=1]
0x7f906a832710: i32 = Constant<15> [ORD=2] [ID=1]
0x7f906a832710: i32 = Constant<15> [ORD=2] [ID=1]
0x7f906a832710: i32 = Constant<15> [ORD=2] [ID=1]
%
Some bisecting reveals that this is a regression introduced in this commit:
Author: Dan Gohman <[email protected]>
Date: Thu Nov 3 21:49:52 2011 +0000
Reapply r143206, with fixes. Disallow physical register lifetimes
across calls, and only check for nested dependences on the special
call-sequence-resource register.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@143660
91177308-0d34-0410-b5e6-96231b3b80d8
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