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SetBlockEx: BeforeLast

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This commit is contained in:
xushiwei
2024-05-26 16:18:24 +08:00
parent 5cf6a30027
commit ddabfdca3d
9 changed files with 181 additions and 137 deletions
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13
ssa/expr.go
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@@ -525,16 +525,15 @@ func (b Builder) newPhi(t Type, phis []llvm.Value) Phi {
}
// AddIncoming adds incoming values to a phi node.
func (p Phi) AddIncoming(b Builder, preds []BasicBlock, f func(i int) Expr) {
func (p Phi) AddIncoming(b Builder, preds []BasicBlock, f func(i int, blk BasicBlock) Expr) {
bs := llvmPredBlocks(preds)
phis := p.phis
if phis != nil {
vals := make([][]llvm.Value, len(phis))
for iblk, blk := range preds {
last := blk.last.LastInstruction()
b.impl.SetInsertPointBefore(last)
val := f(iblk, blk).impl
impl := b.impl
val := f(iblk).impl
b.SetBlockEx(blk, BeforeLast, false)
for i := range phis {
if iblk == 0 {
vals[i] = make([]llvm.Value, len(preds))
@@ -548,9 +547,7 @@ func (p Phi) AddIncoming(b Builder, preds []BasicBlock, f func(i int) Expr) {
} else {
vals := make([]llvm.Value, len(preds))
for iblk, blk := range preds {
last := blk.last.LastInstruction()
b.impl.SetInsertPointBefore(last)
vals[iblk] = f(iblk).impl
vals[iblk] = f(iblk, blk).impl
}
p.impl.AddIncoming(vals, bs)
}
@@ -571,7 +568,7 @@ func (b Builder) Phi(t Type) Phi {
phis := createStrucPhis(impl, nil, tund, b.Prog)
return b.newPhi(t, phis)
default:
panic("todo")
log.Panicf("todo: %T\n", tund)
}
phi := llvm.CreatePHI(impl, t.ll)
return &aPhi{Expr{phi, t}, nil}