6f8e8faa12
For a __thread variable x, when emulated TLS is enabled and there is an access to x, the compiler first looks up the symbol __emutls_v.x within the module. However, the issue arises with an alias y of x, the compiler still tries to look up __emutls_v.y instead of __emutls_v.x. As a result, the lookup returns a nullptr, causing the compiler to crash. The purpose of this MR (Merge Request) is to ensure that in emulated TLS, before checking __emutls_v.y, the compiler first identifies which global value y is an alias of.
18 lines
575 B
LLVM
18 lines
575 B
LLVM
; RUN: llc < %s -emulated-tls -mtriple=aarch64-linux-ohos \
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; RUN: | FileCheck -check-prefix=EMUTLS_CHECK %s
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%struct.__res_state = type { [5 x i8] }
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@foo = dso_local thread_local global %struct.__res_state { [5 x i8] c"\01\02\03\04\05" }, align 1
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@bar = hidden thread_local(initialexec) alias %struct.__res_state, ptr @foo
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define dso_local i32 @main() {
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%1 = alloca i32, align 4
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store i32 0, ptr %1, align 4
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store i8 0, ptr @bar, align 1
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; EMUTLS_CHECK: adrp x0, __emutls_v.foo
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; EMUTLS_CHECK-NEXT: add x0, x0, :lo12:__emutls_v.foo
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ret i32 0
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}
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