80caf2dab2
This allows better escape analysis even without being able to see the entire program. This makes the stack allocation test case more complete but probably won't have much of an effect outside of that (as the compiler is able to infer these attributes in the whole-program functionattrs pass).
88 строки
4 КиБ
LLVM
88 строки
4 КиБ
LLVM
; ModuleID = 'slice.go'
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source_filename = "slice.go"
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target datalayout = "e-m:e-p:32:32-p270:32:32-p271:32:32-p272:64:64-f64:32:64-f80:32-n8:16:32-S128"
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target triple = "i686--linux"
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declare noalias nonnull i8* @runtime.alloc(i32, i8*, i8*)
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define hidden void @main.init(i8* %context, i8* %parentHandle) unnamed_addr {
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entry:
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ret void
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}
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define hidden i32 @main.sliceLen(i32* %ints.data, i32 %ints.len, i32 %ints.cap, i8* %context, i8* %parentHandle) unnamed_addr {
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entry:
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ret i32 %ints.len
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}
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define hidden i32 @main.sliceCap(i32* %ints.data, i32 %ints.len, i32 %ints.cap, i8* %context, i8* %parentHandle) unnamed_addr {
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entry:
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ret i32 %ints.cap
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}
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define hidden i32 @main.sliceElement(i32* %ints.data, i32 %ints.len, i32 %ints.cap, i32 %index, i8* %context, i8* %parentHandle) unnamed_addr {
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entry:
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%.not = icmp ult i32 %index, %ints.len
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br i1 %.not, label %lookup.next, label %lookup.throw
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lookup.throw: ; preds = %entry
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call void @runtime.lookupPanic(i8* undef, i8* null)
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unreachable
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lookup.next: ; preds = %entry
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%0 = getelementptr inbounds i32, i32* %ints.data, i32 %index
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%1 = load i32, i32* %0, align 4
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ret i32 %1
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}
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declare void @runtime.lookupPanic(i8*, i8*)
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define hidden { i32*, i32, i32 } @main.sliceAppendValues(i32* %ints.data, i32 %ints.len, i32 %ints.cap, i8* %context, i8* %parentHandle) unnamed_addr {
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entry:
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%varargs = call i8* @runtime.alloc(i32 12, i8* undef, i8* null)
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%0 = bitcast i8* %varargs to i32*
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store i32 1, i32* %0, align 4
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%1 = getelementptr inbounds i8, i8* %varargs, i32 4
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%2 = bitcast i8* %1 to i32*
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store i32 2, i32* %2, align 4
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%3 = getelementptr inbounds i8, i8* %varargs, i32 8
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%4 = bitcast i8* %3 to i32*
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store i32 3, i32* %4, align 4
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%append.srcPtr = bitcast i32* %ints.data to i8*
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%append.new = call { i8*, i32, i32 } @runtime.sliceAppend(i8* %append.srcPtr, i8* nonnull %varargs, i32 %ints.len, i32 %ints.cap, i32 3, i32 4, i8* undef, i8* null)
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%append.newPtr = extractvalue { i8*, i32, i32 } %append.new, 0
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%append.newBuf = bitcast i8* %append.newPtr to i32*
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%append.newLen = extractvalue { i8*, i32, i32 } %append.new, 1
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%append.newCap = extractvalue { i8*, i32, i32 } %append.new, 2
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%5 = insertvalue { i32*, i32, i32 } undef, i32* %append.newBuf, 0
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%6 = insertvalue { i32*, i32, i32 } %5, i32 %append.newLen, 1
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%7 = insertvalue { i32*, i32, i32 } %6, i32 %append.newCap, 2
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ret { i32*, i32, i32 } %7
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}
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declare { i8*, i32, i32 } @runtime.sliceAppend(i8*, i8* nocapture readonly, i32, i32, i32, i32, i8*, i8*)
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define hidden { i32*, i32, i32 } @main.sliceAppendSlice(i32* %ints.data, i32 %ints.len, i32 %ints.cap, i32* %added.data, i32 %added.len, i32 %added.cap, i8* %context, i8* %parentHandle) unnamed_addr {
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entry:
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%append.srcPtr = bitcast i32* %ints.data to i8*
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%append.srcPtr1 = bitcast i32* %added.data to i8*
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%append.new = call { i8*, i32, i32 } @runtime.sliceAppend(i8* %append.srcPtr, i8* %append.srcPtr1, i32 %ints.len, i32 %ints.cap, i32 %added.len, i32 4, i8* undef, i8* null)
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%append.newPtr = extractvalue { i8*, i32, i32 } %append.new, 0
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%append.newBuf = bitcast i8* %append.newPtr to i32*
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%append.newLen = extractvalue { i8*, i32, i32 } %append.new, 1
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%append.newCap = extractvalue { i8*, i32, i32 } %append.new, 2
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%0 = insertvalue { i32*, i32, i32 } undef, i32* %append.newBuf, 0
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%1 = insertvalue { i32*, i32, i32 } %0, i32 %append.newLen, 1
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%2 = insertvalue { i32*, i32, i32 } %1, i32 %append.newCap, 2
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ret { i32*, i32, i32 } %2
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}
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define hidden i32 @main.sliceCopy(i32* %dst.data, i32 %dst.len, i32 %dst.cap, i32* %src.data, i32 %src.len, i32 %src.cap, i8* %context, i8* %parentHandle) unnamed_addr {
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entry:
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%copy.dstPtr = bitcast i32* %dst.data to i8*
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%copy.srcPtr = bitcast i32* %src.data to i8*
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%copy.n = call i32 @runtime.sliceCopy(i8* %copy.dstPtr, i8* %copy.srcPtr, i32 %dst.len, i32 %src.len, i32 4, i8* undef, i8* null)
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ret i32 %copy.n
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}
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declare i32 @runtime.sliceCopy(i8* nocapture writeonly, i8* nocapture readonly, i32, i32, i32, i8*, i8*)
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