diff options
Diffstat (limited to 'compiler/llvm.go')
| -rw-r--r-- | compiler/llvm.go | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/compiler/llvm.go b/compiler/llvm.go index 747edabbd..2df6d2768 100644 --- a/compiler/llvm.go +++ b/compiler/llvm.go @@ -54,6 +54,22 @@ func (c *Compiler) createTemporaryAlloca(t llvm.Type, name string) (alloca, bitc return } +// createInstructionAlloca creates an alloca in the entry block, and places lifetime control intrinsics around the instruction +func (c *Compiler) createInstructionAlloca(t llvm.Type, inst llvm.Value, name string) llvm.Value { + alloca := c.createEntryBlockAlloca(t, name) + c.builder.SetInsertPointBefore(inst) + bitcast := c.builder.CreateBitCast(alloca, c.i8ptrType, name+".bitcast") + size := llvm.ConstInt(c.ctx.Int64Type(), c.targetData.TypeAllocSize(t), false) + c.builder.CreateCall(c.getLifetimeStartFunc(), []llvm.Value{size, bitcast}, "") + if next := llvm.NextInstruction(inst); !next.IsNil() { + c.builder.SetInsertPointBefore(next) + } else { + c.builder.SetInsertPointAtEnd(inst.InstructionParent()) + } + c.builder.CreateCall(c.getLifetimeEndFunc(), []llvm.Value{size, bitcast}, "") + return alloca +} + // emitLifetimeEnd signals the end of an (alloca) lifetime by calling the // llvm.lifetime.end intrinsic. It is commonly used together with // createTemporaryAlloca. |