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1; RUN: llc -o - %s -mtriple=nvptx -mcpu=sm_20 | FileCheck %s2 3; Check that we do global variable demotion when the symbols don't need to be4; shared across modules or functions.5 6; Variable visible globally can't be demoted.7; CHECK: .visible .shared .align 4 .u64 external_global8@external_global = addrspace(3) global i64 undef, align 49 10; Not externally visible global used in only one function => demote.11; It should live in @define_internal_global.12@internal_global = internal addrspace(3) global i64 undef, align 413 14; Not externally visible global used in several functions => keep.15; CHECK: .shared .align 4 .u64 internal_global_used_in_different_fcts16@internal_global_used_in_different_fcts = internal addrspace(3) global i64 undef, align 417 18; Not externally visible global used in only one function => demote.19; It should live in @define_private_global.20@private_global = private addrspace(3) global i64 undef, align 421 22; Not externally visible global used in only one function23; (but with several uses) => demote.24; It should live in @define_private_global_more_than_one_use.25@private_global_used_more_than_once_in_same_fct = private addrspace(3) global i64 undef, align 426 27; CHECK-LABEL: define_external_global(28define void @define_external_global(i64 %val) {29 store i64 %val, ptr addrspace(3) @external_global30 ret void31}32 33; CHECK-LABEL: define_internal_global(34; Demoted `internal_global` should live here.35; CHECK: .shared .align 4 .u64 internal_global36define void @define_internal_global(i64 %val) {37 store i64 %val, ptr addrspace(3) @internal_global38 ret void39}40 41; CHECK-LABEL: define_internal_global_with_different_fct1(42; CHECK-NOT: .shared .align 4 .u64 internal_global_used_in_different_fcts43define void @define_internal_global_with_different_fct1(i64 %val) {44 store i64 %val, ptr addrspace(3) @internal_global_used_in_different_fcts45 ret void46}47 48; CHECK-LABEL: define_internal_global_with_different_fct2(49; CHECK-NOT: .shared .align 4 .u64 internal_global_used_in_different_fcts50define void @define_internal_global_with_different_fct2(i64 %val) {51 store i64 %val, ptr addrspace(3) @internal_global_used_in_different_fcts52 ret void53}54 55; CHECK-LABEL: define_private_global(56; Demoted `private_global` should live here.57; CHECK: .shared .align 4 .u64 private_global58define void @define_private_global(i64 %val) {59 store i64 %val, ptr addrspace(3) @private_global60 ret void61}62 63; CHECK-LABEL: define_private_global_more_than_one_use(64; Demoted `private_global_used_more_than_once_in_same_fct` should live here.65; CHECK: .shared .align 4 .u64 private_global_used_more_than_once_in_same_fct66;67; Also check that the if-then is still here, otherwise we may not be testing68; the "more-than-one-use" part.69; CHECK: st.shared.b64 [private_global_used_more_than_once_in_same_fct],70; CHECK: st.shared.b64 [private_global_used_more_than_once_in_same_fct], 2571define void @define_private_global_more_than_one_use(i64 %val, i1 %cond) {72 store i64 %val, ptr addrspace(3) @private_global_used_more_than_once_in_same_fct73 br i1 %cond, label %then, label %end74 75then:76 store i64 25, ptr addrspace(3) @private_global_used_more_than_once_in_same_fct77 br label %end78 79end:80 ret void81}82