bbe8cd1333
The module paths string table mapped to both an id sequentially assigned during LTO linking, and the module hash. The former is leftover from before the module hash was added for caching and subsequently replaced use of the module id when renaming promoted symbols (to avoid affects due to link order changes). The sequentially assigned module id was not removed, however, as it was still a convenience when serializing to/from bitcode and assembly. This patch removes the module id from this table, since it isn't strictly needed and can lead to confusion on when it is appropriate to use (e.g. see fix in D156525). It also takes a (likely not significant) amount of overhead. Where an integer module id is needed (e.g. bitcode writing), one is assigned on the fly. There are a couple of test changes since the paths are now sorted alphanumerically when assigning ids on the fly during assembly writing, in order to ensure deterministic behavior. Differential Revision: https://reviews.llvm.org/D156730
64 lines
2.5 KiB
LLVM
64 lines
2.5 KiB
LLVM
; REQUIRES: x86
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; Basic ThinLTO tests.
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; RUN: opt -thinlto-bc %s -o %t1.obj
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; RUN: opt -thinlto-bc %p/Inputs/thinlto.ll -o %t2.obj
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; RUN: opt -thinlto-bc %p/Inputs/thinlto-empty.ll -o %t3.obj
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; Ensure lld generates an index and not a binary if requested.
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; RUN: rm -f %t4.exe
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; RUN: lld-link -thinlto-index-only -entry:main %t1.obj %t2.obj -out:%t4.exe
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; RUN: llvm-bcanalyzer -dump %t1.obj.thinlto.bc | FileCheck %s --check-prefix=BACKEND1
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; RUN: llvm-bcanalyzer -dump %t2.obj.thinlto.bc | FileCheck %s --check-prefix=BACKEND2
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; RUN: not test -e %t4.exe
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; The backend index for this module contains summaries from itself and
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; Inputs/thinlto.ll, as it imports from the latter.
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; BACKEND1: <MODULE_STRTAB_BLOCK
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; BACKEND1-NEXT: <ENTRY {{.*}} record string = '{{.*}}thinlto-index-only.ll.tmp{{.*}}.obj'
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; BACKEND1: <ENTRY {{.*}} record string = '{{.*}}thinlto-index-only.ll.tmp{{.*}}.obj'
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; BACKEND1-NOT: <ENTRY
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; BACKEND1: </MODULE_STRTAB_BLOCK
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; BACKEND1: <GLOBALVAL_SUMMARY_BLOCK
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; BACKEND1: <VERSION
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; BACKEND1: <FLAGS
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; BACKEND1: <VALUE_GUID op0={{1|2}} op1={{-5300342847281564238|-2624081020897602054}}
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; BACKEND1: <VALUE_GUID op0={{1|2}} op1={{-5300342847281564238|-2624081020897602054}}
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; BACKEND1: <COMBINED
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; BACKEND1: <COMBINED
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; BACKEND1: </GLOBALVAL_SUMMARY_BLOCK
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; The backend index for Input/thinlto.ll contains summaries from itself only,
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; as it does not import anything.
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; BACKEND2: <MODULE_STRTAB_BLOCK
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; BACKEND2-NEXT: <ENTRY {{.*}} record string = '{{.*}}thinlto-index-only.ll.tmp2.obj'
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; BACKEND2-NOT: <ENTRY
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; BACKEND2: </MODULE_STRTAB_BLOCK
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; BACKEND2-NEXT: <GLOBALVAL_SUMMARY_BLOCK
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; BACKEND2-NEXT: <VERSION
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; BACKEND2-NEXT: <FLAGS
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; BACKEND2-NEXT: <VALUE_GUID op0=1 op1=-5300342847281564238
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; BACKEND2-NEXT: <COMBINED
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; BACKEND2-NEXT: </GLOBALVAL_SUMMARY_BLOCK
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; Thin archive tests. Check that the module paths point to the original files.
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; RUN: rm -rf %t
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; RUN: mkdir %t
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; RUN: opt -thinlto-bc -o %t/foo.obj < %s
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; RUN: opt -thinlto-bc -o %t/bar.obj < %p/Inputs/thinlto.ll
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; RUN: llvm-ar rcsT %t5.lib %t/bar.obj %t3.obj
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; RUN: lld-link -thinlto-index-only -entry:main %t/foo.obj %t5.lib
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; RUN: llvm-dis -o - %t/foo.obj.thinlto.bc | FileCheck %s --check-prefix=THINARCHIVE
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; THINARCHIVE: ^0 = module: (path: "{{.*}}bar.obj",
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; THINARCHIVE: ^1 = module: (path: "{{.*}}foo.obj",
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target datalayout = "e-m:w-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
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target triple = "x86_64-pc-windows-msvc19.0.24215"
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declare void @g(...)
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define void @main() {
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call void (...) @g()
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ret void
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}
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