diff options
Diffstat (limited to 'llvm/test/Transforms/FunctionImport/funcimport_resolved.ll')
| -rw-r--r-- | llvm/test/Transforms/FunctionImport/funcimport_resolved.ll | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/llvm/test/Transforms/FunctionImport/funcimport_resolved.ll b/llvm/test/Transforms/FunctionImport/funcimport_resolved.ll new file mode 100644 index 00000000000..a6cef7cd260 --- /dev/null +++ b/llvm/test/Transforms/FunctionImport/funcimport_resolved.ll @@ -0,0 +1,43 @@ +; Test to ensure that we always select the same copy of a linkonce function +; when it is encountered with different thresholds. Initially, we will encounter +; the copy in funcimport_resolved1.ll with a lower threshold by reaching it +; from the deeper call chain via foo(), and it won't be selected for importing. +; Later we encounter it with a higher threshold via the direct call from main() +; and it will be selected. 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. + +; 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 -debug-only=function-import 2>&1 | FileCheck %s --check-prefix=INSTLIMDEFAULT +; INSTLIMDEFAULT-DAG: Is importing function {{.*}} foo from {{.*}}funcimport_resolved1.ll +; INSTLIMDEFAULT-DAG: Is importing function {{.*}} linkonceodrfunc from {{.*}}funcimport_resolved1.ll +; INSTLIMDEFAULT-DAG: Is importing function {{.*}} linkonceodrfunc2 from {{.*}}funcimport_resolved1.ll +; INSTLIMDEFAULT-DAG: Is importing function {{.*}} f from {{.*}}funcimport_resolved1.ll + +; Now run with the lower threshold that will only allow linkonceodrfunc to be +; imported from funcimport_resolved1.ll the second time it is encountered. +; 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 -debug-only=function-import -import-instr-limit=8 2>&1 | FileCheck %s --check-prefix=INSTLIM8 +; INSTLIM8-DAG: Is importing function {{.*}} foo from {{.*}}funcimport_resolved1.ll +; INSTLIM8-DAG: Is importing function {{.*}} linkonceodrfunc from {{.*}}funcimport_resolved1.ll +; INSTLIM8-DAG: Not importing function {{.*}} linkonceodrfunc2 from {{.*}}funcimport_resolved1.ll +; INSTLIM8-DAG: Is importing function {{.*}} f from {{.*}}funcimport_resolved1.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 |
