50 lines · cpp
1// RUN: %clang_cc1 -triple x86_64-apple-darwin -std=c++11 -emit-llvm -o - %s -O0 -disable-llvm-optzns -fno-unroll-loops | FileCheck --check-prefix=NO_UNROLL_MD %s2// RUN: %clang_cc1 -triple x86_64-apple-darwin -std=c++11 -emit-llvm -o - %s -O1 -disable-llvm-optzns -fno-unroll-loops | FileCheck --check-prefix=UNROLL_DISABLED_MD %s3// RUN: %clang_cc1 -triple x86_64-apple-darwin -std=c++11 -emit-llvm -o - %s -O2 -disable-llvm-optzns -fno-unroll-loops | FileCheck --check-prefix=UNROLL_DISABLED_MD %s4// RUN: %clang_cc1 -triple x86_64-apple-darwin -std=c++11 -emit-llvm -o - %s -O3 -disable-llvm-optzns -fno-unroll-loops | FileCheck --check-prefix=UNROLL_DISABLED_MD %s5// RUN: %clang_cc1 -triple x86_64-apple-darwin -std=c++11 -emit-llvm -o - %s -O3 -disable-llvm-optzns | FileCheck --check-prefix=NO_UNROLL_MD %s6 7// NO_UNROLL_MD-NOT: llvm.loop.unroll.disable8 9// Verify unroll.disable metadata is added to while loop with -fno-unroll-loops10// and optlevel > 0.11void while_test(int *List, int Length) {12 // UNROLL_DISABLED_MD: define {{.*}} @_Z10while_test13 int i = 0;14 15 while (i < Length) {16 // UNROLL_DISABLED_MD: br label {{.*}}, !llvm.loop [[LOOP_1:![0-9]+]]17 List[i] = i * 2;18 i++;19 }20}21 22// Verify unroll.disable metadata is added to do-while loop with23// -fno-unroll-loops and optlevel > 0.24void do_test(int *List, int Length) {25 // UNROLL_DISABLED_MD: define {{.*}} @_Z7do_test26 int i = 0;27 28 do {29 // UNROLL_DISABLED_MD: br i1 {{.*}}, label {{.*}}, label {{.*}}, !llvm.loop [[LOOP_2:![0-9]+]]30 List[i] = i * 2;31 i++;32 } while (i < Length);33}34 35// Verify unroll.disable metadata is added to while loop with -fno-unroll-loops36// and optlevel > 0.37void for_test(int *List, int Length) {38 // UNROLL_DISABLED_MD: define {{.*}} @_Z8for_test39 for (int i = 0; i < Length; i++) {40 // UNROLL_DISABLED_MD: br label {{.*}}, !llvm.loop [[LOOP_3:![0-9]+]]41 List[i] = i * 2;42 }43}44 45// UNROLL_DISABLED_MD: [[LOOP_1]] = distinct !{[[LOOP_1]], [[MP:![0-9]+]], [[UNROLL_DISABLE:![0-9]+]]}46// UNROLL_DISABLED_MD: [[MP]] = !{!"llvm.loop.mustprogress"}47// UNROLL_DISABLED_MD: [[UNROLL_DISABLE]] = !{!"llvm.loop.unroll.disable"}48// UNROLL_DISABLED_MD: [[LOOP_2]] = distinct !{[[LOOP_2]], [[MP]], [[UNROLL_DISABLE]]}49// UNROLL_DISABLED_MD: [[LOOP_3]] = distinct !{[[LOOP_3]], [[MP]], [[UNROLL_DISABLE]]}50