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compiler: add nounwind attribute

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This attribute is also set by Clang when it compiles C source files
(unless -fexceptions is set). The advantage is that no unwind tables are
emitted on Linux (and perhaps other systems). It also avoids
__aeabi_unwind_cpp_pr0 on ARM when using the musl libc.
This commit is contained in:
Ayke van Laethem
2021-09-13 18:19:26 +02:00
committed by Ron Evans
parent 112b369636
commit 478dd3a28d
18 changed files with 357 additions and 199 deletions
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compiler/testdata/goroutine-wasm.ll
Vendored
+33 -21
View File
@@ -17,14 +17,16 @@ target triple = "wasm32-unknown-wasi"
declare noalias nonnull i8* @runtime.alloc(i32, i8*, i8*)
define hidden void @main.init(i8* %context, i8* %parentHandle) unnamed_addr {
; Function Attrs: nounwind
define hidden void @main.init(i8* %context, i8* %parentHandle) unnamed_addr #0 {
entry:
ret void
}
define hidden void @main.regularFunctionGoroutine(i8* %context, i8* %parentHandle) unnamed_addr {
; Function Attrs: nounwind
define hidden void @main.regularFunctionGoroutine(i8* %context, i8* %parentHandle) unnamed_addr #0 {
entry:
call void @"internal/task.start"(i32 ptrtoint (void (i32, i8*, i8*)* @main.regularFunction to i32), i8* bitcast ({ i32, i8* }* @"main.regularFunctionGoroutine$pack" to i8*), i32 undef, i8* undef, i8* null)
call void @"internal/task.start"(i32 ptrtoint (void (i32, i8*, i8*)* @main.regularFunction to i32), i8* bitcast ({ i32, i8* }* @"main.regularFunctionGoroutine$pack" to i8*), i32 undef, i8* undef, i8* null) #0
ret void
}
@@ -32,35 +34,39 @@ declare void @main.regularFunction(i32, i8*, i8*)
declare void @"internal/task.start"(i32, i8*, i32, i8*, i8*)
define hidden void @main.inlineFunctionGoroutine(i8* %context, i8* %parentHandle) unnamed_addr {
; Function Attrs: nounwind
define hidden void @main.inlineFunctionGoroutine(i8* %context, i8* %parentHandle) unnamed_addr #0 {
entry:
call void @"internal/task.start"(i32 ptrtoint (void (i32, i8*, i8*)* @"main.inlineFunctionGoroutine$1" to i32), i8* bitcast ({ i32, i8* }* @"main.inlineFunctionGoroutine$pack" to i8*), i32 undef, i8* undef, i8* null)
call void @"internal/task.start"(i32 ptrtoint (void (i32, i8*, i8*)* @"main.inlineFunctionGoroutine$1" to i32), i8* bitcast ({ i32, i8* }* @"main.inlineFunctionGoroutine$pack" to i8*), i32 undef, i8* undef, i8* null) #0
ret void
}
define hidden void @"main.inlineFunctionGoroutine$1"(i32 %x, i8* %context, i8* %parentHandle) unnamed_addr {
; Function Attrs: nounwind
define hidden void @"main.inlineFunctionGoroutine$1"(i32 %x, i8* %context, i8* %parentHandle) unnamed_addr #0 {
entry:
ret void
}
define hidden void @main.closureFunctionGoroutine(i8* %context, i8* %parentHandle) unnamed_addr {
; Function Attrs: nounwind
define hidden void @main.closureFunctionGoroutine(i8* %context, i8* %parentHandle) unnamed_addr #0 {
entry:
%n = call i8* @runtime.alloc(i32 4, i8* undef, i8* null)
%n = call i8* @runtime.alloc(i32 4, i8* undef, i8* null) #0
%0 = bitcast i8* %n to i32*
store i32 3, i32* %0, align 4
%1 = call i8* @runtime.alloc(i32 8, i8* undef, i8* null)
%1 = call i8* @runtime.alloc(i32 8, i8* undef, i8* null) #0
%2 = bitcast i8* %1 to i32*
store i32 5, i32* %2, align 4
%3 = getelementptr inbounds i8, i8* %1, i32 4
%4 = bitcast i8* %3 to i8**
store i8* %n, i8** %4, align 4
call void @"internal/task.start"(i32 ptrtoint (void (i32, i8*, i8*)* @"main.closureFunctionGoroutine$1" to i32), i8* nonnull %1, i32 undef, i8* undef, i8* null)
call void @"internal/task.start"(i32 ptrtoint (void (i32, i8*, i8*)* @"main.closureFunctionGoroutine$1" to i32), i8* nonnull %1, i32 undef, i8* undef, i8* null) #0
%5 = load i32, i32* %0, align 4
call void @runtime.printint32(i32 %5, i8* undef, i8* null)
call void @runtime.printint32(i32 %5, i8* undef, i8* null) #0
ret void
}
define hidden void @"main.closureFunctionGoroutine$1"(i32 %x, i8* %context, i8* %parentHandle) unnamed_addr {
; Function Attrs: nounwind
define hidden void @"main.closureFunctionGoroutine$1"(i32 %x, i8* %context, i8* %parentHandle) unnamed_addr #0 {
entry:
%unpack.ptr = bitcast i8* %context to i32*
store i32 7, i32* %unpack.ptr, align 4
@@ -69,38 +75,44 @@ entry:
declare void @runtime.printint32(i32, i8*, i8*)
define hidden void @main.funcGoroutine(i8* %fn.context, i32 %fn.funcptr, i8* %context, i8* %parentHandle) unnamed_addr {
; Function Attrs: nounwind
define hidden void @main.funcGoroutine(i8* %fn.context, i32 %fn.funcptr, i8* %context, i8* %parentHandle) unnamed_addr #0 {
entry:
%0 = call i32 @runtime.getFuncPtr(i8* %fn.context, i32 %fn.funcptr, i8* nonnull @"reflect/types.funcid:func:{basic:int}{}", i8* undef, i8* null)
%1 = call i8* @runtime.alloc(i32 8, i8* undef, i8* null)
%0 = call i32 @runtime.getFuncPtr(i8* %fn.context, i32 %fn.funcptr, i8* nonnull @"reflect/types.funcid:func:{basic:int}{}", i8* undef, i8* null) #0
%1 = call i8* @runtime.alloc(i32 8, i8* undef, i8* null) #0
%2 = bitcast i8* %1 to i32*
store i32 5, i32* %2, align 4
%3 = getelementptr inbounds i8, i8* %1, i32 4
%4 = bitcast i8* %3 to i8**
store i8* %fn.context, i8** %4, align 4
call void @"internal/task.start"(i32 %0, i8* nonnull %1, i32 undef, i8* undef, i8* null)
call void @"internal/task.start"(i32 %0, i8* nonnull %1, i32 undef, i8* undef, i8* null) #0
ret void
}
declare i32 @runtime.getFuncPtr(i8*, i32, i8* dereferenceable_or_null(1), i8*, i8*)
define hidden void @main.recoverBuiltinGoroutine(i8* %context, i8* %parentHandle) unnamed_addr {
; Function Attrs: nounwind
define hidden void @main.recoverBuiltinGoroutine(i8* %context, i8* %parentHandle) unnamed_addr #0 {
entry:
ret void
}
define hidden void @main.copyBuiltinGoroutine(i8* %dst.data, i32 %dst.len, i32 %dst.cap, i8* %src.data, i32 %src.len, i32 %src.cap, i8* %context, i8* %parentHandle) unnamed_addr {
; Function Attrs: nounwind
define hidden void @main.copyBuiltinGoroutine(i8* %dst.data, i32 %dst.len, i32 %dst.cap, i8* %src.data, i32 %src.len, i32 %src.cap, i8* %context, i8* %parentHandle) unnamed_addr #0 {
entry:
%copy.n = call i32 @runtime.sliceCopy(i8* %dst.data, i8* %src.data, i32 %dst.len, i32 %src.len, i32 1, i8* undef, i8* null)
%copy.n = call i32 @runtime.sliceCopy(i8* %dst.data, i8* %src.data, i32 %dst.len, i32 %src.len, i32 1, i8* undef, i8* null) #0
ret void
}
declare i32 @runtime.sliceCopy(i8* nocapture writeonly, i8* nocapture readonly, i32, i32, i32, i8*, i8*)
define hidden void @main.closeBuiltinGoroutine(%runtime.channel* dereferenceable_or_null(32) %ch, i8* %context, i8* %parentHandle) unnamed_addr {
; Function Attrs: nounwind
define hidden void @main.closeBuiltinGoroutine(%runtime.channel* dereferenceable_or_null(32) %ch, i8* %context, i8* %parentHandle) unnamed_addr #0 {
entry:
call void @runtime.chanClose(%runtime.channel* %ch, i8* undef, i8* null)
call void @runtime.chanClose(%runtime.channel* %ch, i8* undef, i8* null) #0
ret void
}
declare void @runtime.chanClose(%runtime.channel* dereferenceable_or_null(32), i8*, i8*)
attributes #0 = { nounwind }