Commit message (Collapse) | Author | Age | Files | Lines | |
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* | X86: Add a bunch of peeps for add and sub of SETB. | Benjamin Kramer | 2011-05-08 | 1 | -0/+82 |
"b + ((a < b) ? 1 : 0)" compiles into cmpl %esi, %edi adcl $0, %esi instead of cmpl %esi, %edi sbbl %eax, %eax andl $1, %eax addl %esi, %eax This saves a register, a false dependency on %eax (Intel's CPUs still don't ignore it) and it's shorter. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131070 91177308-0d34-0410-b5e6-96231b3b80d8 |