tinygo-org/tinygo
1
0
Fork 0
mirror of https://github.com/tinygo-org/tinygo.git synced 2026-08-14 16:03:41 +00:00
Code Issues Packages Projects Releases 6 Wiki Activity

compiler: store defer list head in defer frame

Browse Source
This commit is contained in:
Jake Bailey
2026-05-31 21:08:42 -07:00
committed by Ron Evans
parent f5d0ec93ef
commit ce888e1042
3 changed files with 24 additions and 21 deletions
Download Patch File Download Diff File Expand all files Collapse all files
compiler/defer.go
+8 -4
View File
@@ -60,10 +60,6 @@ func (b *builder) deferInitFunc() {
b.deferExprFuncs = make(map[ssa.Value]int)
b.deferBuiltinFuncs = make(map[ssa.Value]deferBuiltin)
// Create defer list pointer.
b.deferPtr = b.CreateAlloca(b.dataPtrType, "deferPtr")
b.CreateStore(llvm.ConstPointerNull(b.dataPtrType), b.deferPtr)
if b.hasDeferFrame() {
// Set up the defer frame with the current stack pointer.
// This assumes that the stack pointer doesn't move outside of the
@@ -73,12 +69,20 @@ func (b *builder) deferInitFunc() {
// in the setjmp-like inline assembly.
deferFrameType := b.getLLVMRuntimeType("deferFrame")
b.deferFrame = b.CreateAlloca(deferFrameType, "deferframe.buf")
b.deferPtr = b.CreateInBoundsGEP(deferFrameType, b.deferFrame, []llvm.Value{
llvm.ConstInt(b.ctx.Int32Type(), 0, false),
llvm.ConstInt(b.ctx.Int32Type(), 6, false), // DeferPtr field
}, "deferPtr")
stackPointer := b.readStackPointer()
b.createRuntimeCall("setupDeferFrame", []llvm.Value{b.deferFrame, stackPointer}, "")
// Create the landing pad block, which is where control transfers after
// a panic.
b.landingpad = b.ctx.AddBasicBlock(b.llvmFn, "lpad")
} else {
// Create defer list pointer.
b.deferPtr = b.CreateAlloca(b.dataPtrType, "deferPtr")
b.CreateStore(llvm.ConstPointerNull(b.dataPtrType), b.deferPtr)
}
}