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compiler: make string data unnamed addresses

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This ensures LLVM can merge identical strings, and thus reduces code
size in some cases.
This commit is contained in:
Ayke van Laethem
2018-09-23 03:03:40 +02:00
parent 7cea40bcb5
commit 2938437efc
1 changed files with 1 additions and 0 deletions
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compiler/compiler.go
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@@ -2734,6 +2734,7 @@ func (c *Compiler) parseConst(prefix string, expr *ssa.Const) (llvm.Value, error
global.SetInitializer(c.ctx.ConstString(str, false))
global.SetLinkage(llvm.InternalLinkage)
global.SetGlobalConstant(true)
global.SetUnnamedAddr(true)
zero := llvm.ConstInt(llvm.Int32Type(), 0, false)
strPtr := c.builder.CreateInBoundsGEP(global, []llvm.Value{zero, zero}, "")
strObj := llvm.ConstNamedStruct(c.mod.GetTypeByName("runtime._string"), []llvm.Value{strPtr, strLen})