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.
99 строки
3,1 КиБ
LLVM
99 строки
3,1 КиБ
LLVM
; ModuleID = 'string.go'
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source_filename = "string.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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%runtime._string = type { i8*, i32 }
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@"main$string" = internal unnamed_addr constant [3 x i8] c"foo", align 1
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declare noalias nonnull i8* @runtime.alloc(i32, i8*, i8*)
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declare void @runtime.trackPointer(i8* nocapture readonly, i8*)
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; Function Attrs: nounwind
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define hidden void @main.init(i8* %context) unnamed_addr #0 {
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entry:
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ret void
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}
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; Function Attrs: nounwind
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define hidden %runtime._string @main.someString(i8* %context) unnamed_addr #0 {
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entry:
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ret %runtime._string { i8* getelementptr inbounds ([3 x i8], [3 x i8]* @"main$string", i32 0, i32 0), i32 3 }
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}
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; Function Attrs: nounwind
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define hidden %runtime._string @main.zeroLengthString(i8* %context) unnamed_addr #0 {
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entry:
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ret %runtime._string zeroinitializer
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}
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; Function Attrs: nounwind
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define hidden i32 @main.stringLen(i8* %s.data, i32 %s.len, i8* %context) unnamed_addr #0 {
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entry:
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ret i32 %s.len
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}
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; Function Attrs: nounwind
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define hidden i8 @main.stringIndex(i8* %s.data, i32 %s.len, i32 %index, i8* %context) unnamed_addr #0 {
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entry:
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%.not = icmp ult i32 %index, %s.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 i8, i8* %s.data, i32 %index
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%1 = load i8, i8* %0, align 1
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ret i8 %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 i1 @main.stringCompareEqual(i8* %s1.data, i32 %s1.len, i8* %s2.data, i32 %s2.len, i8* %context) unnamed_addr #0 {
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entry:
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%0 = call i1 @runtime.stringEqual(i8* %s1.data, i32 %s1.len, i8* %s2.data, i32 %s2.len, i8* undef) #0
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ret i1 %0
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}
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declare i1 @runtime.stringEqual(i8*, i32, i8*, i32, i8*)
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; Function Attrs: nounwind
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define hidden i1 @main.stringCompareUnequal(i8* %s1.data, i32 %s1.len, i8* %s2.data, i32 %s2.len, i8* %context) unnamed_addr #0 {
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entry:
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%0 = call i1 @runtime.stringEqual(i8* %s1.data, i32 %s1.len, i8* %s2.data, i32 %s2.len, i8* undef) #0
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%1 = xor i1 %0, true
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ret i1 %1
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}
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; Function Attrs: nounwind
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define hidden i1 @main.stringCompareLarger(i8* %s1.data, i32 %s1.len, i8* %s2.data, i32 %s2.len, i8* %context) unnamed_addr #0 {
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entry:
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%0 = call i1 @runtime.stringLess(i8* %s2.data, i32 %s2.len, i8* %s1.data, i32 %s1.len, i8* undef) #0
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ret i1 %0
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}
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declare i1 @runtime.stringLess(i8*, i32, i8*, i32, i8*)
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; Function Attrs: nounwind
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define hidden i8 @main.stringLookup(i8* %s.data, i32 %s.len, i8 %x, i8* %context) unnamed_addr #0 {
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entry:
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%0 = zext i8 %x to i32
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%.not = icmp ult i32 %0, %s.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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%1 = getelementptr inbounds i8, i8* %s.data, i32 %0
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%2 = load i8, i8* %1, align 1
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ret i8 %2
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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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attributes #0 = { nounwind }
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