d23a85066b
Increase alignment of `llvm.threadlocal.address` if the pointed to global has higher alignment.
42 lines
1.3 KiB
LLVM
42 lines
1.3 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 4
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; RUN: opt -o - -S %s -passes=instcombine | FileCheck %s
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@tlsvar_a4 = thread_local global i32 4, align 4
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define void @func_increase_alignment() {
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; CHECK-LABEL: define void @func_increase_alignment() {
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; CHECK-NEXT: [[P:%.*]] = call align 4 ptr @llvm.threadlocal.address.p0(ptr @tlsvar_a4)
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; CHECK-NEXT: store i32 42, ptr [[P]], align 2
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; CHECK-NEXT: ret void
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;
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%p = call align 2 ptr @llvm.threadlocal.address(ptr @tlsvar_a4)
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store i32 42, ptr %p, align 2
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ret void
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}
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@tlsvar_a32 = thread_local global i32 5, align 32
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define i1 @func_add_alignment() {
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; CHECK-LABEL: define i1 @func_add_alignment() {
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; CHECK-NEXT: ret i1 true
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;
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%p = call ptr @llvm.threadlocal.address(ptr @tlsvar_a32)
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%p_int = ptrtoint ptr %p to i32
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%lowbits = and i32 %p_int, 31
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%zero = icmp eq i32 %lowbits, 0
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ret i1 %zero
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}
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@tlsvar_a1 = thread_local global i8 6, align 1
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define i1 @func_dont_reduce_alignment() {
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; CHECK-LABEL: define i1 @func_dont_reduce_alignment() {
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; CHECK-NEXT: ret i1 true
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;
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%p = call align 4 ptr @llvm.threadlocal.address(ptr @tlsvar_a1)
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%p_int = ptrtoint ptr %p to i32
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%lowbits = and i32 %p_int, 3
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%zero = icmp eq i32 %lowbits, 0
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ret i1 %zero
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}
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