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268cfea6bc
use a SUB instruction instead of an ADD, because -128 can be encoded in an 8-bit signed immediate field, while +128 can't be. This avoids the need for a 32-bit immediate field in this case. A similar optimization applies to 64-bit adds with 0x80000000, with the 32-bit signed immediate field. To support this, teach tablegen how to handle 64-bit constants. llvm-svn: 57663
6 lines
72 B
TableGen
6 lines
72 B
TableGen
// RUN: tblgen %s | grep -- 4294901760
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def X {
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int Y = 0xFFFF0000;
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}
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