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ARM sched model: Add VFP div instruction on Swift

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Reapply 183271.

llvm-svn: 183472
This commit is contained in:
Arnold Schwaighofer 2013-06-07 01:10:36 +00:00
parent f006a2373b
commit 7ab0e93c53
1 changed files with 16 additions and 0 deletions
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16
lib/Target/ARM/ARMScheduleSwift.td
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@ -2043,6 +2043,22 @@ let SchedModel = SwiftModel in {
(instregex "VST4LN(d|q)(8|16|32)_UPD",
"VST4LN(d|q)(8|16|32)Pseudo_UPD")>;
// 4.2.44 VFP, Divide and Square Root
def SwiftDiv17 : SchedWriteRes<[SwiftUnitP0, SwiftUnitDiv]> {
let NumMicroOps = 1;
let Latency = 17;
let ResourceCycles = [1, 15];
}
def SwiftDiv32 : SchedWriteRes<[SwiftUnitP0, SwiftUnitDiv]> {
let NumMicroOps = 1;
let Latency = 32;
let ResourceCycles = [1, 30];
}
def : InstRW<[SwiftDiv17], (instregex "VDIVS", "VSQRTS")>;
def : InstRW<[SwiftDiv32], (instregex "VDIVD", "VSQRTD")>;
// Not specified.
def : InstRW<[SwiftWriteP01OneCycle2x], (instregex "ABS")>;
// Preload.
def : WriteRes<WritePreLd, [SwiftUnitP2]> { let Latency = 0;
let ResourceCycles = [0];