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compiler: remove //go:volatile support

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This commit is contained in:
Ayke van Laethem
2019-06-06 14:41:33 +02:00
committed by Ron Evans
parent e67506ee68
commit 5cf7fba1a4
2 changed files with 2 additions and 37 deletions
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compiler/compiler.go
+2 -11
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@@ -1086,12 +1086,7 @@ func (c *Compiler) parseInstr(frame *Frame, instr ssa.Instruction) {
// nothing to store
return
}
store := c.builder.CreateStore(llvmVal, llvmAddr)
valType := instr.Addr.Type().Underlying().(*types.Pointer).Elem()
if c.ir.IsVolatile(valType) {
// Volatile store, for memory-mapped registers.
store.SetVolatile(true)
}
c.builder.CreateStore(llvmVal, llvmAddr)
default:
c.addError(instr.Pos(), "unknown instruction: "+instr.String())
}
@@ -2505,7 +2500,7 @@ func (c *Compiler) parseUnOp(frame *Frame, unop *ssa.UnOp) (llvm.Value, error) {
return llvm.Value{}, c.makeError(unop.Pos(), "todo: unknown type for negate: "+unop.X.Type().Underlying().String())
}
case token.MUL: // *x, dereference pointer
valType := unop.X.Type().Underlying().(*types.Pointer).Elem()
unop.X.Type().Underlying().(*types.Pointer).Elem()
if c.targetData.TypeAllocSize(x.Type().ElementType()) == 0 {
// zero-length data
return c.getZeroValue(x.Type().ElementType()), nil
@@ -2525,10 +2520,6 @@ func (c *Compiler) parseUnOp(frame *Frame, unop *ssa.UnOp) (llvm.Value, error) {
} else {
c.emitNilCheck(frame, x, "deref")
load := c.builder.CreateLoad(x, "")
if c.ir.IsVolatile(valType) {
// Volatile load, for memory-mapped registers.
load.SetVolatile(true)
}
return load, nil
}
case token.XOR: // ^x, toggle all bits in integer