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Bill Wendling
5388e6f9b3
This crash was pretty common while compiling Rust for iOS (armv7). Reason - SjLj preparation step was lowering aggregate arguments as ExtractValue + InsertValue. ExtractValue has assertion which checks that there is some data in value, which is not true in case of empty (no fields) structures. Rust uses them quite extensively so this patch uses a 'select true, %val, undef' instruction to lower the argument. Patch by Valerii Hiora. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@212922 91177308-0d34-0410-b5e6-96231b3b80d8
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