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https://github.com/tinygo-org/tinygo.git
synced 2026-07-26 06:38:42 +00:00
Nia Waldvogel
a40586d092
The compiler now implements the copy builtin directly instead of calling sliceCopy. The length is calculated with the llvm.umax.* intrinsics, and the move is performed by llvm.memmove.*. Both of these operations are easily understood by LLVM's optimization passes. The type's alignment is also provided to llvm.memmove.*, which is useful when rewriting the move. Interp no longer needs to reimplement sliceCopy. Some edge case handling was implemented by sliceCopy but not llvm.memmove.*/llvm.memcpy.*. I copied this over, so copies of external slices should work now. Volatile moves/copies are now run at runtime by interp. There is a 4-byte size increase due to some confusing length logic in sendUSBPacket. I will look at sendUSBPacket in a future PR.
53 lines
1.1 KiB
LLVM
53 lines
1.1 KiB
LLVM
target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
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target triple = "x86_64--linux"
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@uminResult = global i32 0
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@sminResult = global i32 0
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@umaxResult = global i32 0
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@smaxResult = global i32 0
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define void @runtime.initAll() {
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call void @main.init()
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ret void
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}
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define internal void @main.init() {
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call void @testUMin()
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call void @testSMin()
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call void @testUMax()
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call void @testSMax()
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ret void
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}
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define internal void @testUMin() {
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%umin = call i32 @llvm.umin.i32(i32 12, i32 -1)
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store i32 %umin, ptr @uminResult
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ret void
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}
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declare i32 @llvm.umin.i32(i32, i32)
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define internal void @testSMin() {
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%smin = call i32 @llvm.smin.i32(i32 12, i32 -1)
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store i32 %smin, ptr @sminResult
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ret void
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}
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declare i32 @llvm.smin.i32(i32, i32)
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define internal void @testUMax() {
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%umax = call i32 @llvm.umax.i32(i32 12, i32 -1)
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store i32 %umax, ptr @umaxResult
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ret void
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}
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declare i32 @llvm.umax.i32(i32, i32)
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define internal void @testSMax() {
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%smax = call i32 @llvm.smax.i32(i32 12, i32 -1)
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store i32 %smax, ptr @smaxResult
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ret void
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}
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declare i32 @llvm.smax.i32(i32, i32)
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