1; RUN: split-file %s %t 2; RUN: opt -thinlto-bc %t/a.ll -thin-link-bitcode-file=%t1.thinlink.bc -o %t1.bc 3; RUN: opt -thinlto-bc %t/b.ll -thin-link-bitcode-file=%t1.thinlink.bc -o %t2.bc 4; RUN: opt -thinlto-bc %t/c.ll -thin-link-bitcode-file=%t1.thinlink.bc -o %t3.bc 5 6; If the prevailing weak symbol is defined in a native file, the IR copies should be dead and propagation should not occur 7; RUN: llvm-lto2 run -disable-thinlto-funcattrs=0 %t1.bc %t2.bc %t3.bc -o %t.o \ 8; RUN: -r %t1.bc,caller,px -r %t1.bc,callee,lx \ 9; RUN: -r %t2.bc,callee,x \ 10; RUN: -r %t3.bc,callee,x \ 11; RUN: -save-temps 12 13; RUN: llvm-dis -o - %t.o.1.3.import.bc | FileCheck %s 14 15; If the prevailing weak symbol is in an IR file, it should be the one used in the final binary and thus propagation 16; should be based off of that copy 17; RUN: llvm-lto2 run -O3 -disable-thinlto-funcattrs=0 %t1.bc %t2.bc %t3.bc -o %t.2.o \ 18; RUN: -r %t1.bc,caller,px -r %t1.bc,callee,lx \ 19; RUN: -r %t2.bc,callee,px \ 20; RUN: -r %t3.bc,callee,x \ 21; RUN: -save-temps 22 23; RUN: llvm-dis -o - %t.2.o.1.3.import.bc | FileCheck %s --check-prefix=PREVAILING 24; RUN: llvm-dis -o - %t.2.o.2.3.import.bc | FileCheck %s --check-prefix=PREVAILING-B 25; RUN: llvm-dis -o - %t.2.o.3.3.import.bc | FileCheck %s --check-prefix=PREVAILING-C 26 27;--- a.ll 28target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128" 29target triple = "x86_64-unknown-linux-gnu" 30 31declare i32 @callee() 32 33; CHECK-NOT: Function Attrs: 34; CHECK: define i32 @caller() 35 36; PREVAILING: Function Attrs: norecurse nounwind 37; PREVAILING-NEXT: define i32 @caller() 38define i32 @caller() { 39 %res = call i32 @callee() 40 ret i32 %res 41} 42 43;--- b.ll 44target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128" 45target triple = "x86_64-unknown-linux-gnu" 46 47; PREVAILING-B: define weak i32 @callee() 48define weak i32 @callee() { 49 ret i32 5 50} 51 52;--- c.ll 53target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128" 54target triple = "x86_64-unknown-linux-gnu" 55 56; PREVAILING-C: declare i32 @callee() 57define weak i32 @callee() { 58 ret i32 6 59} 60 61