| // REQUIRES: x86-registered-target | |
| // RUN: %clang_cc1 -o %t.o -O2 -flto=thin -triple x86_64-unknown-linux-gnu -emit-llvm-bc %s | |
| // RUN: llvm-lto -thinlto -o %t %t.o | |
| // Test to ensure the slp vectorize codegen option is passed down to the | |
| // ThinLTO backend. -vectorize-slp is a cc1 option and will be added | |
| // automatically when O2/O3/Os/Oz is available for clang. Also check that | |
| // "-mllvm -vectorize-slp=false" will disable slp vectorization, overriding | |
| // the cc1 option. | |
| // | |
| // RUN: %clang_cc1 -triple x86_64-unknown-linux-gnu -emit-llvm -O2 -vectorize-slp -o - -x ir %t.o -fthinlto-index=%t.thinlto.bc 2>&1 | FileCheck %s --check-prefix=SLP | |
| // RUN: %clang_cc1 -triple x86_64-unknown-linux-gnu -emit-llvm -O2 -vectorize-slp -mllvm -vectorize-slp=false -o - -x ir %t.o -fthinlto-index=%t.thinlto.bc 2>&1 | FileCheck %s --check-prefix=NOSLP | |
| // RUN: %clang_cc1 -triple x86_64-unknown-linux-gnu -emit-llvm -O0 -vectorize-slp -o - -x ir %t.o -fthinlto-index=%t.thinlto.bc 2>&1 | FileCheck %s --check-prefix=NOSLP | |
| // SLP: extractelement | |
| // NOSLP-NOT: extractelement | |
| int foo(double *A, int n, int m) { | |
| double sum = 0, v1 = 2, v0 = 3; | |
| for (int i=0; i < n; ++i) | |
| sum += 7*A[i*2] + 7*A[i*2+1]; | |
| return sum; | |
| } | |