1; RUN: rm -rf %t && split-file %s %t && cd %t 2; RUN: opt -module-summary -o a.bc a.ll 3; RUN: opt -module-summary -o b.bc b.ll 4; RUN: llvm-lto2 run a.bc b.bc -o t --save-temps \ 5; RUN: -r a.bc,external.ifunc,pl -r a.bc,use,pl -r a.bc,use2,pl -r a.bc,__cpu_model,lx \ 6; RUN: -r b.bc,main,plx -r b.bc,use,l -r b.bc,use2,l 7; RUN: llvm-dis < t.1.3.import.bc | FileCheck %s --check-prefix=A 8; RUN: llvm-dis < t.2.3.import.bc | FileCheck %s --check-prefix=B --implicit-check-not='@internal.resolver' 9 10; A: define internal nonnull ptr @internal.resolver() 11; A: define internal i32 @internal.default.1(i32 %n) 12 13;; The ifunc implementations of internal.ifunc are internal in A, so they cannot 14;; be referenced by B. Our implementation actually ensures that the ifunc resolver 15;; along with its implementations are not imported. 16; B: declare i32 @use(i32) local_unnamed_addr 17; B: define available_externally i32 @use2(i32 %n) local_unnamed_addr 18; B: declare i32 @external.ifunc(i32) 19 20;--- a.ll 21target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128" 22target triple = "x86_64-unknown-linux-gnu" 23 24$internal.resolver = comdat any 25 26@__cpu_model = external dso_local local_unnamed_addr global { i32, i32, i32, [1 x i32] } 27 28@internal.ifunc = internal ifunc i32 (i32), ptr @internal.resolver 29@external.ifunc = ifunc i32 (i32), ptr @internal.resolver 30 31define dso_local i32 @use(i32 %n) local_unnamed_addr { 32entry: 33 %call = call i32 @internal.ifunc(i32 %n) 34 ret i32 %call 35} 36 37define dso_local i32 @use2(i32 %n) local_unnamed_addr { 38entry: 39 %call = call i32 @external.ifunc(i32 %n) 40 ret i32 %call 41} 42 43define internal nonnull ptr @internal.resolver() comdat { 44entry: 45 %0 = load i32, ptr getelementptr inbounds ({ i32, i32, i32, [1 x i32] }, ptr @__cpu_model, i64 0, i32 3, i64 0), align 4 46 %1 = and i32 %0, 4 47 %.not = icmp eq i32 %1, 0 48 %internal.popcnt.0.internal.default.1 = select i1 %.not, ptr @internal.default.1, ptr @internal.popcnt.0 49 ret ptr %internal.popcnt.0.internal.default.1 50} 51 52define internal i32 @internal.popcnt.0(i32 %n) { 53entry: 54 %0 = call i32 @llvm.ctpop.i32(i32 %n) 55 ret i32 %0 56} 57 58declare i32 @llvm.ctpop.i32(i32) 59 60define internal i32 @internal.default.1(i32 %n) { 61entry: 62 %0 = call i32 @llvm.ctpop.i32(i32 %n) 63 ret i32 %0 64} 65 66;--- b.ll 67target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128" 68target triple = "x86_64-unknown-linux-gnu" 69 70define dso_local i32 @main() local_unnamed_addr { 71entry: 72 %0 = call i32 @use(i32 0) 73 %1 = call i32 @use2(i32 0) 74 %2 = add i32 %0, %1 75 ret i32 %2 76} 77 78declare i32 @use(i32) local_unnamed_addr 79declare i32 @use2(i32) local_unnamed_addr 80