| Commit message (Collapse) | Author | Age | |
|---|---|---|---|
| * | Fun x86 encoding tricks: when adding an immediate value of 128, | Dan Gohman | 2008-10-17 |
| | | | | | | | | | | | | | | | 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. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@57663 91177308-0d34-0410-b5e6-96231b3b80d8 | ||
| * | new testcase | Chris Lattner | 2006-09-18 |
| git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30471 91177308-0d34-0410-b5e6-96231b3b80d8 | |||
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