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8f58e02646
Don't promote byval pointer arguments when when their size in bits is not equal to their alloc size in bits. This can happen for x86_fp80, where the size in bits is 80 but the alloca size in bits in 128. Promoting these types can break passing unions of x86_fp80s and other types. Patch by Thomas Jablin! Reviewed By: rnk Differential Revision: http://reviews.llvm.org/D5057 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216693 91177308-0d34-0410-b5e6-96231b3b80d8