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In the textual format, `noduplicates` means no COMDAT/section group deduplication is performed. Therefore, if both sets of sections are retained, and they happen to define strong external symbols with the same names, there will be a duplicate definition linker error. In PE/COFF, the selection kind lowers to `IMAGE_COMDAT_SELECT_NODUPLICATES`. The name describes the corollary instead of the immediate semantics. The name can cause confusion to other binary formats (ELF, wasm) which have implemented/ want to implement the "no deduplication" selection kind. Rename it to be clearer. Reviewed By: rnk Differential Revision: https://reviews.llvm.org/D106319
95 lines
3.7 KiB
LLVM
95 lines
3.7 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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; RUN: opt -mtriple i686-win32 -passes='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*), 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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$source_comdat_function = comdat any
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define dllexport void @source_comdat_function() comdat($source_comdat_function) {
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entry:
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ret void
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}
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$source_comdat_function_1 = comdat exactmatch
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define dllexport void @source_comdat_function_1() comdat($source_comdat_function_1) {
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entry:
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ret void
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}
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$source_comdat_variable = comdat largest
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@source_comdat_variable = global i32 32, comdat($source_comdat_variable)
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$source_comdat_variable_1 = comdat nodeduplicate
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@source_comdat_variable_1 = global i32 64, comdat($source_comdat_variable_1)
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; CHECK: $target_comdat_function = comdat any
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; CHECK: $target_comdat_function_1 = comdat exactmatch
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; CHECK: $target_comdat_variable = comdat largest
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; CHECK: $target_comdat_variable_1 = comdat nodeduplicate
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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: @target_comdat_variable = global i32 32, comdat
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; CHECK-NOT: @source_comdat_variable = global i32 32, comdat
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; CHECK: @target_comdat_variable_1 = global i32 64, comdat
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; CHECK-NOT: @source_comdat_variable_1 = global i32 64, comdat
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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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; CHECK: define dllexport void @target_comdat_function() comdat
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; CHECK-NOT: define dllexport void @source_comdat_function() comdat
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; CHECK: define dllexport void @target_comdat_function_1() comdat
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; CHECK-NOT: define dllexport void @source_comdat_function_1() comdat
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