mirror of
https://github.com/tinygo-org/tinygo.git
synced 2026-08-03 02:27:48 +00:00
Ayke van Laethem
89ffb47a0c
Add unwinding and recover support for wasm using WebAssembly exception
handling. This still has a few gotchas:
* Many WASI systems don't support exception handling yet.
For example, see:
https://github.com/bytecodealliance/wasmtime/issues/2049
* Asyncify doesn't support wasm exception handling:
https://github.com/WebAssembly/binaryen/issues/4470
This means it's not possible to use goroutines together with
panic/recover.
* The current way that exceptions are implemented pretend to be C++
exceptions, but work slightly differently. If C++ code is called
(for example through CGo) that raises an exception, that exception
will be eaten by TinyGo and not be propagated. This is fixable, it
just hasn't been implemented (because we don't actually support C++
right now).
I hope that these issues will be resolved over time. At least for now,
people who need `recover()` have a way to use it.
142 lines
8.1 KiB
LLVM
142 lines
8.1 KiB
LLVM
; ModuleID = 'gc.go'
|
|
source_filename = "gc.go"
|
|
target datalayout = "e-m:e-p:32:32-p10:8:8-p20:8:8-i64:64-n32:64-S128-ni:1:10:20"
|
|
target triple = "wasm32-unknown-wasi"
|
|
|
|
%runtime._interface = type { ptr, ptr }
|
|
|
|
@main.scalar1 = hidden global ptr null, align 4
|
|
@main.scalar2 = hidden global ptr null, align 4
|
|
@main.scalar3 = hidden global ptr null, align 4
|
|
@main.scalar4 = hidden global ptr null, align 4
|
|
@main.array1 = hidden global ptr null, align 4
|
|
@main.array2 = hidden global ptr null, align 4
|
|
@main.array3 = hidden global ptr null, align 4
|
|
@main.struct1 = hidden global ptr null, align 4
|
|
@main.struct2 = hidden global ptr null, align 4
|
|
@main.struct3 = hidden global ptr null, align 4
|
|
@main.struct4 = hidden global ptr null, align 4
|
|
@main.slice1 = hidden global { ptr, i32, i32 } zeroinitializer, align 4
|
|
@main.slice2 = hidden global { ptr, i32, i32 } zeroinitializer, align 4
|
|
@main.slice3 = hidden global { ptr, i32, i32 } zeroinitializer, align 4
|
|
@"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 " }
|
|
@"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" }
|
|
@"reflect/types.type:basic:complex128" = linkonce_odr constant { i8, ptr } { i8 80, ptr @"reflect/types.type:pointer:basic:complex128" }, align 4
|
|
@"reflect/types.type:pointer:basic:complex128" = linkonce_odr constant { i8, i16, ptr } { i8 -43, i16 0, ptr @"reflect/types.type:basic:complex128" }, align 4
|
|
|
|
; Function Attrs: allockind("alloc,zeroed") allocsize(0)
|
|
declare noalias nonnull ptr @runtime.alloc(i32, ptr, ptr) #0
|
|
|
|
; Function Attrs: nounwind
|
|
declare void @runtime.trackPointer(ptr nocapture readonly, ptr, ptr) #1
|
|
|
|
; Function Attrs: nounwind
|
|
define hidden void @main.init(ptr %context) unnamed_addr #1 {
|
|
entry:
|
|
ret void
|
|
}
|
|
|
|
; Function Attrs: nounwind
|
|
define hidden void @main.newScalar(ptr %context) unnamed_addr #1 {
|
|
entry:
|
|
%stackalloc = alloca i8, align 1
|
|
%new = call align 1 dereferenceable(1) ptr @runtime.alloc(i32 1, ptr nonnull inttoptr (i32 3 to ptr), ptr undef) #2
|
|
call void @runtime.trackPointer(ptr nonnull %new, ptr nonnull %stackalloc, ptr undef)
|
|
store ptr %new, ptr @main.scalar1, align 4
|
|
%new1 = call align 4 dereferenceable(4) ptr @runtime.alloc(i32 4, ptr nonnull inttoptr (i32 3 to ptr), ptr undef) #2
|
|
call void @runtime.trackPointer(ptr nonnull %new1, ptr nonnull %stackalloc, ptr undef)
|
|
store ptr %new1, ptr @main.scalar2, align 4
|
|
%new2 = call align 8 dereferenceable(8) ptr @runtime.alloc(i32 8, ptr nonnull inttoptr (i32 3 to ptr), ptr undef) #2
|
|
call void @runtime.trackPointer(ptr nonnull %new2, ptr nonnull %stackalloc, ptr undef)
|
|
store ptr %new2, ptr @main.scalar3, align 4
|
|
%new3 = call align 4 dereferenceable(4) ptr @runtime.alloc(i32 4, ptr nonnull inttoptr (i32 3 to ptr), ptr undef) #2
|
|
call void @runtime.trackPointer(ptr nonnull %new3, ptr nonnull %stackalloc, ptr undef)
|
|
store ptr %new3, ptr @main.scalar4, align 4
|
|
ret void
|
|
}
|
|
|
|
; Function Attrs: nounwind
|
|
define hidden void @main.newArray(ptr %context) unnamed_addr #1 {
|
|
entry:
|
|
%stackalloc = alloca i8, align 1
|
|
%new = call align 1 dereferenceable(3) ptr @runtime.alloc(i32 3, ptr nonnull inttoptr (i32 3 to ptr), ptr undef) #2
|
|
call void @runtime.trackPointer(ptr nonnull %new, ptr nonnull %stackalloc, ptr undef)
|
|
store ptr %new, ptr @main.array1, align 4
|
|
%new1 = call align 1 dereferenceable(71) ptr @runtime.alloc(i32 71, ptr nonnull inttoptr (i32 3 to ptr), ptr undef) #2
|
|
call void @runtime.trackPointer(ptr nonnull %new1, ptr nonnull %stackalloc, ptr undef)
|
|
store ptr %new1, ptr @main.array2, align 4
|
|
%new2 = call align 4 dereferenceable(12) ptr @runtime.alloc(i32 12, ptr nonnull inttoptr (i32 67 to ptr), ptr undef) #2
|
|
call void @runtime.trackPointer(ptr nonnull %new2, ptr nonnull %stackalloc, ptr undef)
|
|
store ptr %new2, ptr @main.array3, align 4
|
|
ret void
|
|
}
|
|
|
|
; Function Attrs: nounwind
|
|
define hidden void @main.newStruct(ptr %context) unnamed_addr #1 {
|
|
entry:
|
|
%stackalloc = alloca i8, align 1
|
|
%new = call align 1 ptr @runtime.alloc(i32 0, ptr nonnull inttoptr (i32 3 to ptr), ptr undef) #2
|
|
call void @runtime.trackPointer(ptr nonnull %new, ptr nonnull %stackalloc, ptr undef)
|
|
store ptr %new, ptr @main.struct1, align 4
|
|
%new1 = call align 4 dereferenceable(8) ptr @runtime.alloc(i32 8, ptr nonnull inttoptr (i32 3 to ptr), ptr undef) #2
|
|
call void @runtime.trackPointer(ptr nonnull %new1, ptr nonnull %stackalloc, ptr undef)
|
|
store ptr %new1, ptr @main.struct2, align 4
|
|
%new2 = call align 4 dereferenceable(248) ptr @runtime.alloc(i32 248, ptr nonnull @"runtime/gc.layout:62-2000000000000001", ptr undef) #2
|
|
call void @runtime.trackPointer(ptr nonnull %new2, ptr nonnull %stackalloc, ptr undef)
|
|
store ptr %new2, ptr @main.struct3, align 4
|
|
%new3 = call align 4 dereferenceable(248) ptr @runtime.alloc(i32 248, ptr nonnull @"runtime/gc.layout:62-0001", ptr undef) #2
|
|
call void @runtime.trackPointer(ptr nonnull %new3, ptr nonnull %stackalloc, ptr undef)
|
|
store ptr %new3, ptr @main.struct4, align 4
|
|
ret void
|
|
}
|
|
|
|
; Function Attrs: nounwind
|
|
define hidden ptr @main.newFuncValue(ptr %context) unnamed_addr #1 {
|
|
entry:
|
|
%stackalloc = alloca i8, align 1
|
|
%new = call align 4 dereferenceable(8) ptr @runtime.alloc(i32 8, ptr nonnull inttoptr (i32 197 to ptr), ptr undef) #2
|
|
call void @runtime.trackPointer(ptr nonnull %new, ptr nonnull %stackalloc, ptr undef)
|
|
ret ptr %new
|
|
}
|
|
|
|
; Function Attrs: nounwind
|
|
define hidden void @main.makeSlice(ptr %context) unnamed_addr #1 {
|
|
entry:
|
|
%stackalloc = alloca i8, align 1
|
|
%makeslice = call align 1 dereferenceable(5) ptr @runtime.alloc(i32 5, ptr nonnull inttoptr (i32 3 to ptr), ptr undef) #2
|
|
call void @runtime.trackPointer(ptr nonnull %makeslice, ptr nonnull %stackalloc, ptr undef)
|
|
store ptr %makeslice, ptr @main.slice1, align 4
|
|
store i32 5, ptr getelementptr inbounds ({ ptr, i32, i32 }, ptr @main.slice1, i32 0, i32 1), align 4
|
|
store i32 5, ptr getelementptr inbounds ({ ptr, i32, i32 }, ptr @main.slice1, i32 0, i32 2), align 4
|
|
%makeslice1 = call align 4 dereferenceable(20) ptr @runtime.alloc(i32 20, ptr nonnull inttoptr (i32 67 to ptr), ptr undef) #2
|
|
call void @runtime.trackPointer(ptr nonnull %makeslice1, ptr nonnull %stackalloc, ptr undef)
|
|
store ptr %makeslice1, ptr @main.slice2, align 4
|
|
store i32 5, ptr getelementptr inbounds ({ ptr, i32, i32 }, ptr @main.slice2, i32 0, i32 1), align 4
|
|
store i32 5, ptr getelementptr inbounds ({ ptr, i32, i32 }, ptr @main.slice2, i32 0, i32 2), align 4
|
|
%makeslice3 = call align 4 dereferenceable(60) ptr @runtime.alloc(i32 60, ptr nonnull inttoptr (i32 71 to ptr), ptr undef) #2
|
|
call void @runtime.trackPointer(ptr nonnull %makeslice3, ptr nonnull %stackalloc, ptr undef)
|
|
store ptr %makeslice3, ptr @main.slice3, align 4
|
|
store i32 5, ptr getelementptr inbounds ({ ptr, i32, i32 }, ptr @main.slice3, i32 0, i32 1), align 4
|
|
store i32 5, ptr getelementptr inbounds ({ ptr, i32, i32 }, ptr @main.slice3, i32 0, i32 2), align 4
|
|
ret void
|
|
}
|
|
|
|
; Function Attrs: nounwind
|
|
define hidden %runtime._interface @main.makeInterface(double %v.r, double %v.i, ptr %context) unnamed_addr #1 {
|
|
entry:
|
|
%stackalloc = alloca i8, align 1
|
|
%0 = call align 8 dereferenceable(16) ptr @runtime.alloc(i32 16, ptr null, ptr undef) #2
|
|
call void @runtime.trackPointer(ptr nonnull %0, ptr nonnull %stackalloc, ptr undef)
|
|
store double %v.r, ptr %0, align 8
|
|
%.repack1 = getelementptr inbounds { double, double }, ptr %0, i32 0, i32 1
|
|
store double %v.i, ptr %.repack1, align 8
|
|
%1 = insertvalue %runtime._interface { ptr @"reflect/types.type:basic:complex128", ptr undef }, ptr %0, 1
|
|
call void @runtime.trackPointer(ptr nonnull @"reflect/types.type:basic:complex128", ptr nonnull %stackalloc, ptr undef)
|
|
call void @runtime.trackPointer(ptr nonnull %0, ptr nonnull %stackalloc, ptr undef)
|
|
ret %runtime._interface %1
|
|
}
|
|
|
|
attributes #0 = { allockind("alloc,zeroed") allocsize(0) "alloc-family"="runtime.alloc" "target-features"="+bulk-memory,+exception-handling,+mutable-globals,+nontrapping-fptoint,+sign-ext" }
|
|
attributes #1 = { nounwind "target-features"="+bulk-memory,+exception-handling,+mutable-globals,+nontrapping-fptoint,+sign-ext" }
|
|
attributes #2 = { nounwind }
|