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compiler: change symbol name for string and packed data constants

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This new symbol name format (package name + "$string" or "$pack" suffix)
is easier to parse for analysis.
This commit is contained in:
Ayke van Laethem
2021-10-29 04:09:38 +02:00
committed by Ron Evans
parent 7c24925aa7
commit f63c389f1a
6 changed files with 23 additions and 22 deletions
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compiler/compiler.go
+9 -7
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@@ -83,6 +83,7 @@ type compilerContext struct {
program *ssa.Program
diagnostics []error
astComments map[string]*ast.CommentGroup
pkg *types.Package
runtimePkg *types.Package
}
@@ -253,6 +254,7 @@ func Sizes(machine llvm.TargetMachine) types.Sizes {
// CompilePackage compiles a single package to a LLVM module.
func CompilePackage(moduleName string, pkg *loader.Package, ssaPkg *ssa.Package, machine llvm.TargetMachine, config *Config, dumpSSA bool) (llvm.Module, []error) {
c := newCompilerContext(moduleName, machine, config, dumpSSA)
c.pkg = pkg.Pkg
c.runtimePkg = ssaPkg.Prog.ImportedPackage("runtime").Pkg
c.program = ssaPkg.Prog
@@ -1458,7 +1460,7 @@ func (b *builder) createFunctionCall(instr *ssa.CallCommon) (llvm.Value, error)
func (b *builder) getValue(expr ssa.Value) llvm.Value {
switch expr := expr.(type) {
case *ssa.Const:
return b.createConst(b.info.linkName, expr)
return b.createConst(expr)
case *ssa.Function:
if b.getFunctionInfo(expr).exported {
b.addError(expr.Pos(), "cannot use an exported function as value: "+expr.String())
@@ -2411,7 +2413,7 @@ func (b *builder) createBinOp(op token.Token, typ, ytyp types.Type, x, y llvm.Va
}
// createConst creates a LLVM constant value from a Go constant.
func (b *builder) createConst(prefix string, expr *ssa.Const) llvm.Value {
func (b *builder) createConst(expr *ssa.Const) llvm.Value {
switch typ := expr.Type().Underlying().(type) {
case *types.Basic:
llvmType := b.getLLVMType(typ)
@@ -2427,7 +2429,7 @@ func (b *builder) createConst(prefix string, expr *ssa.Const) llvm.Value {
strLen := llvm.ConstInt(b.uintptrType, uint64(len(str)), false)
var strPtr llvm.Value
if str != "" {
objname := prefix + "$string"
objname := b.pkg.Path() + "$string"
global := llvm.AddGlobal(b.mod, llvm.ArrayType(b.ctx.Int8Type(), len(str)), objname)
global.SetInitializer(b.ctx.ConstString(str, false))
global.SetLinkage(llvm.InternalLinkage)
@@ -2457,15 +2459,15 @@ func (b *builder) createConst(prefix string, expr *ssa.Const) llvm.Value {
n, _ := constant.Float64Val(expr.Value)
return llvm.ConstFloat(llvmType, n)
} else if typ.Kind() == types.Complex64 {
r := b.createConst(prefix, ssa.NewConst(constant.Real(expr.Value), types.Typ[types.Float32]))
i := b.createConst(prefix, ssa.NewConst(constant.Imag(expr.Value), types.Typ[types.Float32]))
r := b.createConst(ssa.NewConst(constant.Real(expr.Value), types.Typ[types.Float32]))
i := b.createConst(ssa.NewConst(constant.Imag(expr.Value), types.Typ[types.Float32]))
cplx := llvm.Undef(b.ctx.StructType([]llvm.Type{b.ctx.FloatType(), b.ctx.FloatType()}, false))
cplx = b.CreateInsertValue(cplx, r, 0, "")
cplx = b.CreateInsertValue(cplx, i, 1, "")
return cplx
} else if typ.Kind() == types.Complex128 {
r := b.createConst(prefix, ssa.NewConst(constant.Real(expr.Value), types.Typ[types.Float64]))
i := b.createConst(prefix, ssa.NewConst(constant.Imag(expr.Value), types.Typ[types.Float64]))
r := b.createConst(ssa.NewConst(constant.Real(expr.Value), types.Typ[types.Float64]))
i := b.createConst(ssa.NewConst(constant.Imag(expr.Value), types.Typ[types.Float64]))
cplx := llvm.Undef(b.ctx.StructType([]llvm.Type{b.ctx.DoubleType(), b.ctx.DoubleType()}, false))
cplx = b.CreateInsertValue(cplx, r, 0, "")
cplx = b.CreateInsertValue(cplx, i, 1, "")