5d07e0448e
Adding a module flag 'MaxTLSAlign' describing the maximum alignment a global TLS variable can have. Optimizers are prevented from increasing the alignment of such variables beyond this threshold. Reviewed By: probinson Differential Revision: https://reviews.llvm.org/D140123
21 lines
1016 B
LLVM
21 lines
1016 B
LLVM
; REQUIRES: x86-registered-target
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; RUN: opt -passes=instcombine -S < %s | FileCheck %s
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%class.Arr = type <{ [160 x %class.Derived], i32, [4 x i8] }>
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%class.Derived = type { %class.Base, ptr }
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%class.Base = type { ptr }
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@array = hidden thread_local global %class.Arr zeroinitializer, align 32
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; CHECK: @array{{.*}}align 32
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@_ZTV7Derived = constant { [4 x ptr] } { [4 x ptr] [ptr null, ptr null, ptr null, ptr null] }, align 8
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define internal fastcc void @foo() unnamed_addr {
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entry:
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store <8 x ptr> <ptr getelementptr inbounds ({ [4 x ptr] }, ptr @_ZTV7Derived, i64 0, inrange i32 0, i64 2), ptr null, ptr getelementptr inbounds ({ [4 x ptr] }, ptr @_ZTV7Derived, i64 0, inrange i32 0, i64 2), ptr null, ptr getelementptr inbounds ({ [4 x ptr] }, ptr @_ZTV7Derived, i64 0, inrange i32 0, i64 2), ptr null, ptr getelementptr inbounds ({ [4 x ptr] }, ptr @_ZTV7Derived, i64 0, inrange i32 0, i64 2), ptr null>, ptr @array, align 32
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ret void
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}
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!llvm.module.flags = !{!0}
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!0 = !{i32 1, !"MaxTLSAlign", i32 256}
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