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Dan Gohman
27cae7b01b
The 32-bit displacement field in an x86 address is signed. Arrange for it
to be sign-extended when it is promoted to 64 bits for intermediate offset calculations. The offset calculations are done as uint64_t so that overflow conditions are well defined. This fixes a problem which is currently hidden by the x86 AsmPrinter but which was exposed by r58917 (which is temporarily reverted). See PR3027 for details. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59044 91177308-0d34-0410-b5e6-96231b3b80d8
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