79ba6a50c3
For example, this commit moves the 'throw' branch of an assertion (nil check, slice index check, etc) to the end of the function while inserting the "continue" branch right after the insert location. This makes the resulting IR easier to follow. For some reason, this also reduces code size a bit on average. The TinyGo smoke tests saw a reduction of 0.22%, mainly from WebAssembly. The drivers repo saw little average change in code size (-0.01%). This commit also adds a few compiler tests for the defer keyword.
186 строки
7,9 КиБ
LLVM
186 строки
7,9 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-p10:8:8-p20:8:8-i64:64-n32:64-S128-ni:1:10:20"
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target triple = "wasm32-unknown-wasi"
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declare noalias nonnull i8* @runtime.alloc(i32, i8*, i8*)
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declare void @runtime.trackPointer(i8* nocapture readonly, i8*)
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; Function Attrs: nounwind
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define hidden void @main.init(i8* %context) unnamed_addr #0 {
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entry:
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ret void
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}
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; Function Attrs: nounwind
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define hidden i32 @main.sliceLen(i32* %ints.data, i32 %ints.len, i32 %ints.cap, i8* %context) unnamed_addr #0 {
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entry:
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ret i32 %ints.len
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}
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; Function Attrs: nounwind
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define hidden i32 @main.sliceCap(i32* %ints.data, i32 %ints.len, i32 %ints.cap, i8* %context) unnamed_addr #0 {
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entry:
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ret i32 %ints.cap
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}
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; Function Attrs: nounwind
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define hidden i32 @main.sliceElement(i32* %ints.data, i32 %ints.len, i32 %ints.cap, i32 %index, i8* %context) unnamed_addr #0 {
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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.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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lookup.throw: ; preds = %entry
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call void @runtime.lookupPanic(i8* undef) #0
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unreachable
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}
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declare void @runtime.lookupPanic(i8*)
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; Function Attrs: nounwind
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define hidden { i32*, i32, i32 } @main.sliceAppendValues(i32* %ints.data, i32 %ints.len, i32 %ints.cap, i8* %context) unnamed_addr #0 {
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entry:
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%varargs = call i8* @runtime.alloc(i32 12, i8* nonnull inttoptr (i32 3 to i8*), i8* undef) #0
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call void @runtime.trackPointer(i8* nonnull %varargs, i8* undef) #0
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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) #0
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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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call void @runtime.trackPointer(i8* %append.newPtr, i8* undef) #0
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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*)
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; Function Attrs: nounwind
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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) unnamed_addr #0 {
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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) #0
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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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call void @runtime.trackPointer(i8* %append.newPtr, i8* undef) #0
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ret { i32*, i32, i32 } %2
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}
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; Function Attrs: nounwind
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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) unnamed_addr #0 {
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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) #0
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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*)
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; Function Attrs: nounwind
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define hidden { i8*, i32, i32 } @main.makeByteSlice(i32 %len, i8* %context) unnamed_addr #0 {
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entry:
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%slice.maxcap = icmp slt i32 %len, 0
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br i1 %slice.maxcap, label %slice.throw, label %slice.next
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slice.next: ; preds = %entry
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%makeslice.buf = call i8* @runtime.alloc(i32 %len, i8* nonnull inttoptr (i32 3 to i8*), i8* undef) #0
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%0 = insertvalue { i8*, i32, i32 } undef, i8* %makeslice.buf, 0
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%1 = insertvalue { i8*, i32, i32 } %0, i32 %len, 1
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%2 = insertvalue { i8*, i32, i32 } %1, i32 %len, 2
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call void @runtime.trackPointer(i8* nonnull %makeslice.buf, i8* undef) #0
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ret { i8*, i32, i32 } %2
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slice.throw: ; preds = %entry
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call void @runtime.slicePanic(i8* undef) #0
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unreachable
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}
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declare void @runtime.slicePanic(i8*)
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; Function Attrs: nounwind
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define hidden { i16*, i32, i32 } @main.makeInt16Slice(i32 %len, i8* %context) unnamed_addr #0 {
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entry:
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%slice.maxcap = icmp slt i32 %len, 0
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br i1 %slice.maxcap, label %slice.throw, label %slice.next
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slice.next: ; preds = %entry
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%makeslice.cap = shl i32 %len, 1
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%makeslice.buf = call i8* @runtime.alloc(i32 %makeslice.cap, i8* nonnull inttoptr (i32 3 to i8*), i8* undef) #0
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%makeslice.array = bitcast i8* %makeslice.buf to i16*
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%0 = insertvalue { i16*, i32, i32 } undef, i16* %makeslice.array, 0
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%1 = insertvalue { i16*, i32, i32 } %0, i32 %len, 1
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%2 = insertvalue { i16*, i32, i32 } %1, i32 %len, 2
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call void @runtime.trackPointer(i8* nonnull %makeslice.buf, i8* undef) #0
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ret { i16*, i32, i32 } %2
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slice.throw: ; preds = %entry
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call void @runtime.slicePanic(i8* undef) #0
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unreachable
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}
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; Function Attrs: nounwind
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define hidden { [3 x i8]*, i32, i32 } @main.makeArraySlice(i32 %len, i8* %context) unnamed_addr #0 {
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entry:
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%slice.maxcap = icmp ugt i32 %len, 1431655765
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br i1 %slice.maxcap, label %slice.throw, label %slice.next
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slice.next: ; preds = %entry
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%makeslice.cap = mul i32 %len, 3
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%makeslice.buf = call i8* @runtime.alloc(i32 %makeslice.cap, i8* nonnull inttoptr (i32 3 to i8*), i8* undef) #0
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%makeslice.array = bitcast i8* %makeslice.buf to [3 x i8]*
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%0 = insertvalue { [3 x i8]*, i32, i32 } undef, [3 x i8]* %makeslice.array, 0
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%1 = insertvalue { [3 x i8]*, i32, i32 } %0, i32 %len, 1
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%2 = insertvalue { [3 x i8]*, i32, i32 } %1, i32 %len, 2
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call void @runtime.trackPointer(i8* nonnull %makeslice.buf, i8* undef) #0
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ret { [3 x i8]*, i32, i32 } %2
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slice.throw: ; preds = %entry
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call void @runtime.slicePanic(i8* undef) #0
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unreachable
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}
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; Function Attrs: nounwind
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define hidden { i32*, i32, i32 } @main.makeInt32Slice(i32 %len, i8* %context) unnamed_addr #0 {
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entry:
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%slice.maxcap = icmp ugt i32 %len, 1073741823
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br i1 %slice.maxcap, label %slice.throw, label %slice.next
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slice.next: ; preds = %entry
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%makeslice.cap = shl i32 %len, 2
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%makeslice.buf = call i8* @runtime.alloc(i32 %makeslice.cap, i8* nonnull inttoptr (i32 3 to i8*), i8* undef) #0
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%makeslice.array = bitcast i8* %makeslice.buf to i32*
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%0 = insertvalue { i32*, i32, i32 } undef, i32* %makeslice.array, 0
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%1 = insertvalue { i32*, i32, i32 } %0, i32 %len, 1
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%2 = insertvalue { i32*, i32, i32 } %1, i32 %len, 2
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call void @runtime.trackPointer(i8* nonnull %makeslice.buf, i8* undef) #0
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ret { i32*, i32, i32 } %2
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slice.throw: ; preds = %entry
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call void @runtime.slicePanic(i8* undef) #0
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unreachable
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}
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attributes #0 = { nounwind }
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