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https://github.com/c64scene-ar/llvm-6502.git
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35c163020a
This introduces the symbol rewriter. This is an IR->IR transformation that is implemented as a CodeGenPrepare pass. This allows for the transparent adjustment of the symbols during compilation. It provides a clean, simple, elegant solution for symbol inter-positioning. This technique is often used, such as in the various sanitizers and performance analysis. The control of this is via a custom YAML syntax map file that indicates source to destination mapping, so as to avoid having the compiler to know the exact details of the source to destination transformations. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@221548 91177308-0d34-0410-b5e6-96231b3b80d8
60 lines
2.3 KiB
LLVM
60 lines
2.3 KiB
LLVM
; RUN: opt -mtriple i686-win32 -rewrite-symbols -rewrite-map-file %p/rewrite.map \
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; RUN: %s -o - | llvm-dis | FileCheck %s
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declare void @source_function()
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@source_variable = external global i32
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declare void @source_function_pattern_function()
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declare void @source_function_pattern_multiple_function_matches()
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@source_variable_pattern_variable = external global i32
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@source_variable_pattern_multiple_variable_matches = external global i32
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declare void @"\01naked_source_function"()
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declare void @"\01__imp_missing_global_leader_prefix"()
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declare i32 @first_callee()
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declare i32 @second_callee()
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define i32 @caller() {
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%rhs = call i32 @first_callee()
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%lhs = call i32 @second_callee()
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%res = add i32 %rhs, %lhs
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ret i32 %res
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}
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%struct.S = type { i8 }
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@_ZN1SC1Ev = alias void (%struct.S*)* @_ZN1SC2Ev
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define void @_ZN1SC2Ev(%struct.S* %this) unnamed_addr align 2 {
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entry:
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%this.addr = alloca %struct.S*, align 4
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store %struct.S* %this, %struct.S** %this.addr, align 4
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ret void
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}
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; CHECK: @target_variable = external global i32
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; CHECK-NOT: @source_variable = external global i32
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; CHECK: @target_pattern_variable = external global i32
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; CHECK-NOT: @source_pattern_variable = external global i32
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; CHECK: @target_pattern_multiple_variable_matches = external global i32
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; CHECK-NOT: @source_pattern_multiple_variable_matches = external global i32
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; CHECK: declare void @target_function()
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; CHECK-NOT: declare void @source_function()
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; CHECK: declare void @target_pattern_function()
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; CHECK-NOT: declare void @source_function_pattern_function()
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; CHECK: declare void @target_pattern_multiple_function_matches()
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; CHECK-NOT: declare void @source_function_pattern_multiple_function_matches()
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; CHECK: declare void @naked_target_function()
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; CHECK-NOT: declare void @"\01naked_source_function"()
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; CHECK-NOT: declare void @"\01__imp__imported_function"()
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; CHECK: declare void @"\01__imp_missing_global_leader_prefix"()
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; CHECK-NOT: declare void @"\01__imp_DO_NOT_REWRITE"()
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; CHECK: declare i32 @renamed_callee()
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; CHECK-NOT: declare i32 @first_callee()
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; CHECK: declare i32 @second_callee()
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; CHECK: define i32 @caller() {
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; CHECK: %rhs = call i32 @renamed_callee()
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; CHECK-NOT: %rhs = call i32 @first_callee()
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; CHECK: %lhs = call i32 @second_callee()
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; CHECK: %res = add i32 %rhs, %lhs
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; CHECK: ret i32 %res
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; CHECK: }
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