ddebce7021
Using the GlobalVariable code_model property added in #72077. code_model = "small" means the global should be treated as small regardless of the TargetMachine code model. code_model = "large" means the global should be treated as large regardless of the TargetMachine code model. Inferring small/large based on a known section name still takes precedence for correctness. The intention is to use this for globals that are accessed very infrequently but also take up a lot of space in the binary to mitigate relocation overflows. Prime examples are globals that go in "__llvm_prf_names" for coverage/PGO instrumented builds and "asan_globals" for ASan builds.
117 lines
6.4 KiB
LLVM
117 lines
6.4 KiB
LLVM
; RUN: llc < %s -relocation-model=pic -filetype=obj -code-model=small -o %t
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; RUN: llvm-readelf -S %t | FileCheck %s --check-prefix=SMALL
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; RUN: llc < %s -relocation-model=pic -filetype=obj -code-model=medium -o %t
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; RUN: llvm-readelf -S %t | FileCheck %s --check-prefix=LARGE
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; RUN: llc < %s -relocation-model=pic -filetype=obj -code-model=medium -large-data-threshold=79 -o %t
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; RUN: llvm-readelf -S %t | FileCheck %s --check-prefix=LARGE
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; RUN: llc < %s -relocation-model=pic -filetype=obj -code-model=medium -large-data-threshold=80 -o %t
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; RUN: llvm-readelf -S %t | FileCheck %s --check-prefix=SMALL
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; RUN: llc < %s -relocation-model=pic -filetype=obj -code-model=large -large-data-threshold=79 -o %t
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; RUN: llvm-readelf -S %t | FileCheck %s --check-prefix=LARGE
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; RUN: llc < %s -relocation-model=pic -filetype=obj -code-model=large -large-data-threshold=80 -o %t
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; RUN: llvm-readelf -S %t | FileCheck %s --check-prefix=SMALL
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; RUN: llc < %s -relocation-model=pic -filetype=obj -code-model=small -data-sections -o %t
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; RUN: llvm-readelf -S %t | FileCheck %s --check-prefix=SMALL-DS
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; RUN: llc < %s -relocation-model=pic -filetype=obj -code-model=medium -data-sections -o %t
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; RUN: llvm-readelf -S %t | FileCheck %s --check-prefix=LARGE-DS
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; RUN: llc < %s -relocation-model=pic -filetype=obj -code-model=large -data-sections -o %t
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; RUN: llvm-readelf -S %t | FileCheck %s --check-prefix=LARGE-DS
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; SMALL: .data {{.*}} WA {{.*}}
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; SMALL: .data.x {{.*}} WA {{.*}}
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; SMALL: .data0 {{.*}} WA {{.*}}
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; SMALL: .ldata {{.*}} WAl {{.*}}
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; SMALL: .ldata.x {{.*}} WAl {{.*}}
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; SMALL: .ldata0 {{.*}} WA {{.*}}
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; SMALL: force_small {{.*}} WA {{.*}}
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; SMALL: force_large {{.*}} WAl {{.*}}
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; SMALL: foo {{.*}} WA {{.*}}
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; SMALL: .bss {{.*}} WA {{.*}}
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; SMALL: .lbss {{.*}} WAl {{.*}}
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; SMALL: .rodata {{.*}} A {{.*}}
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; SMALL: .lrodata {{.*}} Al {{.*}}
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; SMALL: .data.rel.ro {{.*}} WA {{.*}}
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; SMALL: .tbss {{.*}} WAT {{.*}}
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; SMALL: .tdata {{.*}} WAT {{.*}}
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; SMALL-DS: .data {{.*}} WA {{.*}}
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; SMALL-DS: .data.x {{.*}} WA {{.*}}
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; SMALL-DS: .data0 {{.*}} WA {{.*}}
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; SMALL-DS: .ldata {{.*}} WAl {{.*}}
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; SMALL-DS: .ldata.x {{.*}} WAl {{.*}}
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; SMALL-DS: .ldata0 {{.*}} WA {{.*}}
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; SMALL-DS: .data.data {{.*}} WA {{.*}}
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; SMALL-DS: force_small {{.*}} WA {{.*}}
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; SMALL-DS: force_large {{.*}} WAl {{.*}}
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; SMALL-DS: foo {{.*}} WA {{.*}}
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; SMALL-DS: .lbss {{.*}} WAl {{.*}}
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; SMALL-DS: .bss.bss {{.*}} WA {{.*}}
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; SMALL-DS: .lrodata {{.*}} Al {{.*}}
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; SMALL-DS: .rodata.rodata {{.*}} A {{.*}}
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; SMALL-DS: .data.rel.ro.relro {{.*}} WA {{.*}}
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; SMALL-DS: .tbss.tbss {{.*}} WAT {{.*}}
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; SMALL-DS: .tdata.tdata {{.*}} WAT {{.*}}
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; LARGE: .data {{.*}} WA {{.*}}
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; LARGE: .data.x {{.*}} WA {{.*}}
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; LARGE: .data0 {{.*}} WAl {{.*}}
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; LARGE: .ldata {{.*}} WAl {{.*}}
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; LARGE: .ldata.x {{.*}} WAl {{.*}}
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; LARGE: .ldata0 {{.*}} WAl {{.*}}
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; LARGE: force_small {{.*}} WA {{.*}}
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; LARGE: force_large {{.*}} WAl {{.*}}
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; LARGE: foo {{.*}} WAl {{.*}}
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; LARGE: .bss {{.*}} WA {{.*}}
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; LARGE: .lbss {{.*}} WAl {{.*}}
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; LARGE: .rodata {{.*}} A {{.*}}
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; LARGE: .lrodata {{.*}} Al {{.*}}
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; LARGE: .ldata.rel.ro {{.*}} WAl {{.*}}
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; LARGE: .tbss {{.*}} WAT {{.*}}
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; LARGE: .tdata {{.*}} WAT {{.*}}
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; LARGE-DS: .data {{.*}} WA {{.*}}
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; LARGE-DS: .data.x {{.*}} WA {{.*}}
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; LARGE-DS: .data0 {{.*}} WAl {{.*}}
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; LARGE-DS: .ldata {{.*}} WAl {{.*}}
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; LARGE-DS: .ldata.x {{.*}} WAl {{.*}}
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; LARGE-DS: .ldata0 {{.*}} WAl {{.*}}
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; LARGE-DS: .ldata.data {{.*}} WAl {{.*}}
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; LARGE-DS: force_small {{.*}} WA {{.*}}
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; LARGE-DS: force_large {{.*}} WAl {{.*}}
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; LARGE-DS: foo {{.*}} WAl {{.*}}
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; LARGE-DS: .bss {{.*}} WA {{.*}}
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; LARGE-DS: .lbss.bss {{.*}} WAl {{.*}}
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; LARGE-DS: .rodata {{.*}} A {{.*}}
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; LARGE-DS: .lrodata.rodata {{.*}} Al {{.*}}
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; LARGE-DS: .ldata.rel.ro.relro {{.*}} WAl {{.*}}
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; LARGE-DS: .tbss.tbss {{.*}} WAT {{.*}}
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; LARGE-DS: .tdata.tdata {{.*}} WAT {{.*}}
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target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
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target triple = "x86_64--linux"
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@data_with_explicit_section = internal global [10 x i64] [i64 1, i64 2, i64 0, i64 0, i64 0, i64 0, i64 0, i64 0, i64 0, i64 0], section ".data"
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@data_with_explicit_section2 = internal global [10 x i64] [i64 1, i64 2, i64 0, i64 0, i64 0, i64 0, i64 0, i64 0, i64 0, i64 0], section ".data.x"
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@data_with_explicit_section0 = internal global [10 x i64] [i64 1, i64 2, i64 0, i64 0, i64 0, i64 0, i64 0, i64 0, i64 0, i64 0], section ".data0"
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@ldata_with_explicit_section = internal global [10 x i64] [i64 1, i64 2, i64 0, i64 0, i64 0, i64 0, i64 0, i64 0, i64 0, i64 0], section ".ldata"
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@ldata_with_explicit_section2 = internal global [10 x i64] [i64 1, i64 2, i64 0, i64 0, i64 0, i64 0, i64 0, i64 0, i64 0, i64 0], section ".ldata.x"
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@ldata_with_explicit_section0 = internal global [10 x i64] [i64 1, i64 2, i64 0, i64 0, i64 0, i64 0, i64 0, i64 0, i64 0, i64 0], section ".ldata0"
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@data = internal global [10 x i64] [i64 1, i64 2, i64 0, i64 0, i64 0, i64 0, i64 0, i64 0, i64 0, i64 0]
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@data_force_small = internal global [10 x i64] [i64 1, i64 2, i64 0, i64 0, i64 0, i64 0, i64 0, i64 0, i64 0, i64 0], code_model "small", section "force_small"
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@data_force_large = internal global [10 x i64] [i64 1, i64 2, i64 0, i64 0, i64 0, i64 0, i64 0, i64 0, i64 0, i64 0], code_model "large", section "force_large"
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@data_force_small_ldata = internal global [10 x i64] [i64 1, i64 2, i64 0, i64 0, i64 0, i64 0, i64 0, i64 0, i64 0, i64 0], code_model "small", section ".ldata"
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@data_force_large_data = internal global [10 x i64] [i64 1, i64 2, i64 0, i64 0, i64 0, i64 0, i64 0, i64 0, i64 0, i64 0], code_model "large", section ".data"
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@foo_with_explicit_section = internal global [10 x i64] [i64 1, i64 2, i64 0, i64 0, i64 0, i64 0, i64 0, i64 0, i64 0, i64 0], section "foo"
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@bss_with_explicit_section = internal global [10 x i64] zeroinitializer, section ".bss"
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@lbss_with_explicit_section = internal global [10 x i64] zeroinitializer, section ".lbss"
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@bss = internal global [10 x i64] zeroinitializer
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@rodata_with_explicit_section = internal constant [10 x i64] zeroinitializer, section ".rodata"
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@lrodata_with_explicit_section = internal constant [10 x i64] zeroinitializer, section ".lrodata"
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@rodata = internal constant [10 x i64] zeroinitializer
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@relro = internal constant [10 x ptr] [ptr @func, ptr @func, ptr @func, ptr @func, ptr @func, ptr @func, ptr @func, ptr @func, ptr @func, ptr @func]
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@tbss = internal thread_local global [10 x i64] zeroinitializer
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@tdata = internal thread_local global [10 x i64] [i64 1, i64 2, i64 0, i64 0, i64 0, i64 0, i64 0, i64 0, i64 0, i64 0]
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declare void @func()
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