commit 54b0fb8af38294b3571b798ce0053f79bb6e0d27
author Richard Smith <richard-llvm@metafoo.co.uk> Tue Oct 08 21:26:03 2019 +0000
committer Richard Smith <richard-llvm@metafoo.co.uk> Tue Oct 08 21:26:03 2019 +0000
tree 6f8edd0b21c3c9e81043e2d505b66403ed71097f
parent 9558f9dcee80e526443ab99aa0a399df4194f60b

Fix crash or wrong code bug if a lifetime-extended temporary contains a
"non-constant" value.

If the constant evaluator evaluates part of a variable initializer,
including the initializer for some lifetime-extended temporary, but
fails to fully evaluate the initializer, it can leave behind wrong
values for temporaries encountered in that initialization. Don't try to
emit those from CodeGen! Instead, look at the values that constant
evaluation produced if (and only if) it actually succeeds and we're
emitting the lifetime-extending declaration's initializer as a constant.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@374119 91177308-0d34-0410-b5e6-96231b3b80d8