f180339d6b
This gives a small improvement now, and is needed to be able to use the
Heap2Stack transform that's available in the Attributor pass. This
Heap2Stack transform could replace our custom OptimizeAllocs pass.
Most of the changes are just IR that changed, the actual change is
relatively small.
To give an example of why this is useful, here is the code size before
this change:
$ tinygo build -o test -size=short ./testdata/stdlib.go
code data bss | flash ram
95620 1812 968 | 97432 2780
$ tinygo build -o test -size=short ./testdata/stdlib.go
code data bss | flash ram
95380 1812 968 | 97192 2780
That's a 0.25% reduction. Not a whole lot, but nice for such a small
patch.
141 строка
8 КиБ
LLVM
141 строка
8 КиБ
LLVM
; ModuleID = 'gc.go'
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source_filename = "gc.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._interface = type { ptr, ptr }
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@main.scalar1 = hidden global ptr null, align 4
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@main.scalar2 = hidden global ptr null, align 4
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@main.scalar3 = hidden global ptr null, align 4
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@main.scalar4 = hidden global ptr null, align 4
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@main.array1 = hidden global ptr null, align 4
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@main.array2 = hidden global ptr null, align 4
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@main.array3 = hidden global ptr null, align 4
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@main.struct1 = hidden global ptr null, align 4
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@main.struct2 = hidden global ptr null, align 4
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@main.struct3 = hidden global ptr null, align 4
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@main.struct4 = hidden global ptr null, align 4
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@main.slice1 = hidden global { ptr, i32, i32 } zeroinitializer, align 8
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@main.slice2 = hidden global { ptr, i32, i32 } zeroinitializer, align 8
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@main.slice3 = hidden global { ptr, i32, i32 } zeroinitializer, align 8
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@"runtime/gc.layout:62-2000000000000001" = linkonce_odr unnamed_addr constant { i32, [8 x i8] } { i32 62, [8 x i8] c"\01\00\00\00\00\00\00 " }
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@"runtime/gc.layout:62-0001" = linkonce_odr unnamed_addr constant { i32, [8 x i8] } { i32 62, [8 x i8] c"\01\00\00\00\00\00\00\00" }
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@"reflect/types.type:basic:complex128" = linkonce_odr constant { i8, ptr } { i8 16, ptr @"reflect/types.type:pointer:basic:complex128" }, align 4
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@"reflect/types.type:pointer:basic:complex128" = linkonce_odr constant { i8, i16, ptr } { i8 21, i16 0, ptr @"reflect/types.type:basic:complex128" }, align 4
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; Function Attrs: allockind("alloc,zeroed") allocsize(0)
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declare noalias nonnull ptr @runtime.alloc(i32, ptr, ptr) #0
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declare void @runtime.trackPointer(ptr nocapture readonly, ptr, ptr) #1
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; Function Attrs: nounwind
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define hidden void @main.init(ptr %context) unnamed_addr #2 {
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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 void @main.newScalar(ptr %context) unnamed_addr #2 {
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entry:
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%stackalloc = alloca i8, align 1
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%new = call dereferenceable(1) ptr @runtime.alloc(i32 1, ptr nonnull inttoptr (i32 3 to ptr), ptr undef) #3
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call void @runtime.trackPointer(ptr nonnull %new, ptr nonnull %stackalloc, ptr undef) #3
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store ptr %new, ptr @main.scalar1, align 4
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%new1 = call dereferenceable(4) ptr @runtime.alloc(i32 4, ptr nonnull inttoptr (i32 3 to ptr), ptr undef) #3
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call void @runtime.trackPointer(ptr nonnull %new1, ptr nonnull %stackalloc, ptr undef) #3
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store ptr %new1, ptr @main.scalar2, align 4
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%new2 = call dereferenceable(8) ptr @runtime.alloc(i32 8, ptr nonnull inttoptr (i32 3 to ptr), ptr undef) #3
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call void @runtime.trackPointer(ptr nonnull %new2, ptr nonnull %stackalloc, ptr undef) #3
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store ptr %new2, ptr @main.scalar3, align 4
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%new3 = call dereferenceable(4) ptr @runtime.alloc(i32 4, ptr nonnull inttoptr (i32 3 to ptr), ptr undef) #3
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call void @runtime.trackPointer(ptr nonnull %new3, ptr nonnull %stackalloc, ptr undef) #3
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store ptr %new3, ptr @main.scalar4, align 4
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ret void
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}
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; Function Attrs: nounwind
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define hidden void @main.newArray(ptr %context) unnamed_addr #2 {
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entry:
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%stackalloc = alloca i8, align 1
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%new = call dereferenceable(3) ptr @runtime.alloc(i32 3, ptr nonnull inttoptr (i32 3 to ptr), ptr undef) #3
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call void @runtime.trackPointer(ptr nonnull %new, ptr nonnull %stackalloc, ptr undef) #3
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store ptr %new, ptr @main.array1, align 4
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%new1 = call dereferenceable(71) ptr @runtime.alloc(i32 71, ptr nonnull inttoptr (i32 3 to ptr), ptr undef) #3
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call void @runtime.trackPointer(ptr nonnull %new1, ptr nonnull %stackalloc, ptr undef) #3
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store ptr %new1, ptr @main.array2, align 4
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%new2 = call dereferenceable(12) ptr @runtime.alloc(i32 12, ptr nonnull inttoptr (i32 67 to ptr), ptr undef) #3
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call void @runtime.trackPointer(ptr nonnull %new2, ptr nonnull %stackalloc, ptr undef) #3
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store ptr %new2, ptr @main.array3, align 4
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ret void
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}
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; Function Attrs: nounwind
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define hidden void @main.newStruct(ptr %context) unnamed_addr #2 {
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entry:
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%stackalloc = alloca i8, align 1
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%new = call ptr @runtime.alloc(i32 0, ptr nonnull inttoptr (i32 3 to ptr), ptr undef) #3
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call void @runtime.trackPointer(ptr nonnull %new, ptr nonnull %stackalloc, ptr undef) #3
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store ptr %new, ptr @main.struct1, align 4
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%new1 = call dereferenceable(8) ptr @runtime.alloc(i32 8, ptr nonnull inttoptr (i32 3 to ptr), ptr undef) #3
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call void @runtime.trackPointer(ptr nonnull %new1, ptr nonnull %stackalloc, ptr undef) #3
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store ptr %new1, ptr @main.struct2, align 4
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%new2 = call dereferenceable(248) ptr @runtime.alloc(i32 248, ptr nonnull @"runtime/gc.layout:62-2000000000000001", ptr undef) #3
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call void @runtime.trackPointer(ptr nonnull %new2, ptr nonnull %stackalloc, ptr undef) #3
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store ptr %new2, ptr @main.struct3, align 4
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%new3 = call dereferenceable(248) ptr @runtime.alloc(i32 248, ptr nonnull @"runtime/gc.layout:62-0001", ptr undef) #3
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call void @runtime.trackPointer(ptr nonnull %new3, ptr nonnull %stackalloc, ptr undef) #3
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store ptr %new3, ptr @main.struct4, align 4
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ret void
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}
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; Function Attrs: nounwind
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define hidden ptr @main.newFuncValue(ptr %context) unnamed_addr #2 {
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entry:
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%stackalloc = alloca i8, align 1
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%new = call dereferenceable(8) ptr @runtime.alloc(i32 8, ptr nonnull inttoptr (i32 197 to ptr), ptr undef) #3
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call void @runtime.trackPointer(ptr nonnull %new, ptr nonnull %stackalloc, ptr undef) #3
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ret ptr %new
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}
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; Function Attrs: nounwind
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define hidden void @main.makeSlice(ptr %context) unnamed_addr #2 {
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entry:
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%stackalloc = alloca i8, align 1
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%makeslice = call dereferenceable(5) ptr @runtime.alloc(i32 5, ptr nonnull inttoptr (i32 3 to ptr), ptr undef) #3
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call void @runtime.trackPointer(ptr nonnull %makeslice, ptr nonnull %stackalloc, ptr undef) #3
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store ptr %makeslice, ptr @main.slice1, align 8
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store i32 5, ptr getelementptr inbounds ({ ptr, i32, i32 }, ptr @main.slice1, i32 0, i32 1), align 4
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store i32 5, ptr getelementptr inbounds ({ ptr, i32, i32 }, ptr @main.slice1, i32 0, i32 2), align 8
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%makeslice1 = call dereferenceable(20) ptr @runtime.alloc(i32 20, ptr nonnull inttoptr (i32 67 to ptr), ptr undef) #3
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call void @runtime.trackPointer(ptr nonnull %makeslice1, ptr nonnull %stackalloc, ptr undef) #3
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store ptr %makeslice1, ptr @main.slice2, align 8
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store i32 5, ptr getelementptr inbounds ({ ptr, i32, i32 }, ptr @main.slice2, i32 0, i32 1), align 4
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store i32 5, ptr getelementptr inbounds ({ ptr, i32, i32 }, ptr @main.slice2, i32 0, i32 2), align 8
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%makeslice3 = call dereferenceable(60) ptr @runtime.alloc(i32 60, ptr nonnull inttoptr (i32 71 to ptr), ptr undef) #3
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call void @runtime.trackPointer(ptr nonnull %makeslice3, ptr nonnull %stackalloc, ptr undef) #3
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store ptr %makeslice3, ptr @main.slice3, align 8
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store i32 5, ptr getelementptr inbounds ({ ptr, i32, i32 }, ptr @main.slice3, i32 0, i32 1), align 4
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store i32 5, ptr getelementptr inbounds ({ ptr, i32, i32 }, ptr @main.slice3, i32 0, i32 2), align 8
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ret void
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}
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; Function Attrs: nounwind
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define hidden %runtime._interface @main.makeInterface(double %v.r, double %v.i, ptr %context) unnamed_addr #2 {
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entry:
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%stackalloc = alloca i8, align 1
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%0 = call dereferenceable(16) ptr @runtime.alloc(i32 16, ptr null, ptr undef) #3
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call void @runtime.trackPointer(ptr nonnull %0, ptr nonnull %stackalloc, ptr undef) #3
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store double %v.r, ptr %0, align 8
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%.repack1 = getelementptr inbounds { double, double }, ptr %0, i32 0, i32 1
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store double %v.i, ptr %.repack1, align 8
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%1 = insertvalue %runtime._interface { ptr @"reflect/types.type:basic:complex128", ptr undef }, ptr %0, 1
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call void @runtime.trackPointer(ptr nonnull @"reflect/types.type:basic:complex128", ptr nonnull %stackalloc, ptr undef) #3
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call void @runtime.trackPointer(ptr nonnull %0, ptr nonnull %stackalloc, ptr undef) #3
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ret %runtime._interface %1
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}
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attributes #0 = { allockind("alloc,zeroed") allocsize(0) "alloc-family"="runtime.alloc" "target-features"="+bulk-memory,+nontrapping-fptoint,+sign-ext" }
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attributes #1 = { "target-features"="+bulk-memory,+nontrapping-fptoint,+sign-ext" }
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attributes #2 = { nounwind "target-features"="+bulk-memory,+nontrapping-fptoint,+sign-ext" }
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attributes #3 = { nounwind }
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