| // Check code generation |
| // RUN: %clang_cc1 -verify -triple x86_64-pc-linux-gnu -fopenmp -emit-llvm %s -o - | FileCheck %s --check-prefix=IR |
| |
| // Check same results after serialization round-trip |
| // RUN: %clang_cc1 -verify -triple x86_64-pc-linux-gnu -fopenmp -emit-pch -o %t %s |
| // RUN: %clang_cc1 -verify -triple x86_64-pc-linux-gnu -fopenmp -include-pch %t -emit-llvm %s -o - | FileCheck %s --check-prefix=IR |
| // expected-no-diagnostics |
| |
| #ifndef HEADER |
| #define HEADER |
| |
| // placeholder for loop body code. |
| extern "C" void body(...) {} |
| |
| |
| // IR-LABEL: @func( |
| // IR-NEXT: [[ENTRY:.*]]: |
| // IR-NEXT: %[[START_ADDR:.+]] = alloca i32, align 4 |
| // IR-NEXT: %[[END_ADDR:.+]] = alloca i32, align 4 |
| // IR-NEXT: %[[STEP_ADDR:.+]] = alloca i32, align 4 |
| // IR-NEXT: %[[I:.+]] = alloca i32, align 4 |
| // IR-NEXT: store i32 %[[START:.+]], ptr %[[START_ADDR]], align 4 |
| // IR-NEXT: store i32 %[[END:.+]], ptr %[[END_ADDR]], align 4 |
| // IR-NEXT: store i32 %[[STEP:.+]], ptr %[[STEP_ADDR]], align 4 |
| // IR-NEXT: %[[TMP0:.+]] = load i32, ptr %[[START_ADDR]], align 4 |
| // IR-NEXT: store i32 %[[TMP0]], ptr %[[I]], align 4 |
| // IR-NEXT: br label %[[FOR_COND:.+]] |
| // IR-EMPTY: |
| // IR-NEXT: [[FOR_COND]]: |
| // IR-NEXT: %[[TMP1:.+]] = load i32, ptr %[[I]], align 4 |
| // IR-NEXT: %[[TMP2:.+]] = load i32, ptr %[[END_ADDR]], align 4 |
| // IR-NEXT: %[[CMP:.+]] = icmp slt i32 %[[TMP1]], %[[TMP2]] |
| // IR-NEXT: br i1 %[[CMP]], label %[[FOR_BODY:.+]], label %[[FOR_END:.+]] |
| // IR-EMPTY: |
| // IR-NEXT: [[FOR_BODY]]: |
| // IR-NEXT: %[[TMP3:.+]] = load i32, ptr %[[START_ADDR]], align 4 |
| // IR-NEXT: %[[TMP4:.+]] = load i32, ptr %[[END_ADDR]], align 4 |
| // IR-NEXT: %[[TMP5:.+]] = load i32, ptr %[[STEP_ADDR]], align 4 |
| // IR-NEXT: %[[TMP6:.+]] = load i32, ptr %[[I]], align 4 |
| // IR-NEXT: call void (...) @body(i32 noundef %[[TMP3]], i32 noundef %[[TMP4]], i32 noundef %[[TMP5]], i32 noundef %[[TMP6]]) |
| // IR-NEXT: br label %[[FOR_INC:.+]] |
| // IR-EMPTY: |
| // IR-NEXT: [[FOR_INC]]: |
| // IR-NEXT: %[[TMP7:.+]] = load i32, ptr %[[STEP_ADDR]], align 4 |
| // IR-NEXT: %[[TMP8:.+]] = load i32, ptr %[[I]], align 4 |
| // IR-NEXT: %[[ADD:.+]] = add nsw i32 %[[TMP8]], %[[TMP7]] |
| // IR-NEXT: store i32 %[[ADD]], ptr %[[I]], align 4 |
| // IR-NEXT: br label %[[FOR_COND]], !llvm.loop ![[LOOP2:[0-9]+]] |
| // IR-EMPTY: |
| // IR-NEXT: [[FOR_END]]: |
| // IR-NEXT: ret void |
| // IR-NEXT: } |
| extern "C" void func(int start, int end, int step) { |
| #pragma omp unroll |
| for (int i = start; i < end; i+=step) |
| body(start, end, step, i); |
| } |
| |
| #endif /* HEADER */ |
| |
| |
| // IR: ![[LOOP2]] = distinct !{![[LOOP2]], ![[LOOPPROP3:[0-9]+]], ![[LOOPPROP4:[0-9]+]]} |
| // IR: ![[LOOPPROP3]] = !{!"llvm.loop.mustprogress"} |
| // IR: ![[LOOPPROP4]] = !{!"llvm.loop.unroll.enable"} |
