diff options
Diffstat (limited to 'compiler/intrinsics.go')
| -rw-r--r-- | compiler/intrinsics.go | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/compiler/intrinsics.go b/compiler/intrinsics.go index c1d05348b..3c7edd7c9 100644 --- a/compiler/intrinsics.go +++ b/compiler/intrinsics.go @@ -23,6 +23,8 @@ func (b *builder) defineIntrinsicFunction() { b.createMemoryCopyImpl() case name == "runtime.memzero": b.createMemoryZeroImpl() + case name == "runtime.stacksave": + b.createStackSaveImpl() case name == "runtime.KeepAlive": b.createKeepAliveImpl() case strings.HasPrefix(name, "runtime/volatile.Load"): @@ -77,6 +79,14 @@ func (b *builder) createMemoryZeroImpl() { b.CreateRetVoid() } +// createStackSaveImpl creates a call to llvm.stacksave.p0 to read the current +// stack pointer. +func (b *builder) createStackSaveImpl() { + b.createFunctionStart(true) + sp := b.readStackPointer() + b.CreateRet(sp) +} + // Return the llvm.memset.p0.i8 function declaration. func (c *compilerContext) getMemsetFunc() llvm.Value { fnName := "llvm.memset.p0.i" + strconv.Itoa(c.uintptrType.IntTypeWidth()) |