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https://github.com/c64scene-ar/llvm-6502.git
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87896d9368
Additional fixes: Do something reasonable for subtargets with generic itineraries by handle node latency the same as for an empty itinerary. Now nodes default to unit latency unless an itinerary explicitly specifies a zero cycle stage or it is a TokenFactor chain. Original fixes: UnitsSharePred was a source of randomness in the scheduler: node priority depended on the queue data structure. I rewrote the recent VRegCycle heuristics to completely replace the old heuristic without any randomness. To make the ndoe latency adjustments work, I also needed to do something a little more reasonable with TokenFactor. I gave it zero latency to its consumers and always schedule it as low as possible. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129421 91177308-0d34-0410-b5e6-96231b3b80d8
19 lines
563 B
LLVM
19 lines
563 B
LLVM
; RUN: llc < %s -mtriple=thumbv7-apple-darwin -regalloc=linearscan -disable-post-ra | FileCheck %s
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; The ARM magic hinting works best with linear scan.
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; CHECK: ldrd
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; CHECK: strd
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; CHECK: ldrb
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%struct.x = type { i8, i8, i8, i8, i8, i8, i8, i8, i8, i8, i8 }
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@src = external global %struct.x
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@dst = external global %struct.x
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define i32 @t() {
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entry:
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call void @llvm.memcpy.i32( i8* getelementptr (%struct.x* @dst, i32 0, i32 0), i8* getelementptr (%struct.x* @src, i32 0, i32 0), i32 11, i32 8 )
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ret i32 0
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}
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declare void @llvm.memcpy.i32(i8*, i8*, i32, i32)
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