| ; Test to ensure that we always select the same copy of a linkonce function |
| ; when it is encountered with different thresholds. When we encounter the |
| ; copy in funcimport_resolved1.ll with a higher threshold via the direct call |
| ; from main(), it will be selected for importing. When we encounter it with a |
| ; lower threshold by reaching it from the deeper call chain via foo(), it |
| ; won't be selected for importing. We don't want to select both the copy from |
| ; funcimport_resolved1.ll and the smaller one from funcimport_resolved2.ll, |
| ; leaving it up to the backend to figure out which one to actually import. |
| ; The linkonce_odr may have different instruction counts in practice due to |
| ; different inlines in the compile step. |
| |
| ; Require asserts so we can use -debug-only |
| ; REQUIRES: asserts |
| |
| ; REQUIRES: x86-registered-target |
| |
| ; RUN: opt -module-summary %s -o %t.bc |
| ; RUN: opt -module-summary %p/Inputs/funcimport_resolved1.ll -o %t2.bc |
| ; RUN: opt -module-summary %p/Inputs/funcimport_resolved2.ll -o %t3.bc |
| |
| ; First do a sanity check that all callees are imported with the default |
| ; instruction limit |
| ; RUN: llvm-lto2 run %t.bc %t2.bc %t3.bc -o %t4 -r=%t.bc,_main,pl -r=%t.bc,_linkonceodrfunc,l -r=%t.bc,_foo,l -r=%t2.bc,_foo,pl -r=%t2.bc,_linkonceodrfunc,pl -r=%t2.bc,_linkonceodrfunc2,pl -r=%t3.bc,_linkonceodrfunc,l -thinlto-threads=1 -debug-only=function-import 2>&1 | FileCheck %s --check-prefix=INSTLIMDEFAULT |
| ; INSTLIMDEFAULT: Is importing function {{.*}} foo from {{.*}}funcimport_resolved1.ll |
| ; INSTLIMDEFAULT: Is importing function {{.*}} linkonceodrfunc from {{.*}}funcimport_resolved1.ll |
| ; INSTLIMDEFAULT: Is importing function {{.*}} linkonceodrfunc2 from {{.*}}funcimport_resolved1.ll |
| ; INSTLIMDEFAULT: Is importing function {{.*}} f from {{.*}}funcimport_resolved1.ll |
| ; INSTLIMDEFAULT-NOT: Is importing function {{.*}} linkonceodrfunc from {{.*}}funcimport_resolved2.ll |
| |
| ; Now run with the lower threshold that will only allow linkonceodrfunc to be |
| ; imported from funcimport_resolved1.ll when encountered via the direct call |
| ; from main(). Ensure we don't also select the copy in funcimport_resolved2.ll |
| ; when it is encountered via the deeper call chain. |
| ; RUN: llvm-lto2 run %t.bc %t2.bc %t3.bc -o %t4 -r=%t.bc,_main,pl -r=%t.bc,_linkonceodrfunc,l -r=%t.bc,_foo,l -r=%t2.bc,_foo,pl -r=%t2.bc,_linkonceodrfunc,pl -r=%t2.bc,_linkonceodrfunc2,pl -r=%t3.bc,_linkonceodrfunc,l -thinlto-threads=1 -debug-only=function-import -import-instr-limit=8 2>&1 | FileCheck %s --check-prefix=INSTLIM8 |
| ; INSTLIM8: Is importing function {{.*}} foo from {{.*}}funcimport_resolved1.ll |
| ; INSTLIM8: Is importing function {{.*}} linkonceodrfunc from {{.*}}funcimport_resolved1.ll |
| ; INSTLIM8: Not importing function {{.*}} linkonceodrfunc2 from {{.*}}funcimport_resolved1.ll |
| ; INSTLIM8: Is importing function {{.*}} f from {{.*}}funcimport_resolved1.ll |
| ; INSTLIM8-NOT: Is importing function {{.*}} linkonceodrfunc from {{.*}}funcimport_resolved2.ll |
| |
| target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128" |
| target triple = "x86_64-apple-macosx10.11.0" |
| |
| define i32 @main() #0 { |
| entry: |
| call void (...) @foo() |
| call void (...) @linkonceodrfunc() |
| ret i32 0 |
| } |
| |
| declare void @foo(...) #1 |
| declare void @linkonceodrfunc(...) #1 |