forked from OSchip/llvm-project
66 lines
2.8 KiB
C++
66 lines
2.8 KiB
C++
// Check code generation
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// RUN: %clang_cc1 -verify -triple x86_64-pc-linux-gnu -fopenmp -fopenmp-version=51 -emit-llvm %s -o - | FileCheck %s --check-prefix=IR
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// Check same results after serialization round-trip
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// RUN: %clang_cc1 -verify -triple x86_64-pc-linux-gnu -fopenmp -fopenmp-version=51 -emit-pch -o %t %s
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// RUN: %clang_cc1 -verify -triple x86_64-pc-linux-gnu -fopenmp -fopenmp-version=51 -include-pch %t -emit-llvm %s -o - | FileCheck %s --check-prefix=IR
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// expected-no-diagnostics
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#ifndef HEADER
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#define HEADER
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// placeholder for loop body code.
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extern "C" void body(...) {}
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// IR-LABEL: @func(
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// IR-NEXT: [[ENTRY:.*]]:
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// IR-NEXT: %[[START_ADDR:.+]] = alloca i32, align 4
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// IR-NEXT: %[[END_ADDR:.+]] = alloca i32, align 4
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// IR-NEXT: %[[STEP_ADDR:.+]] = alloca i32, align 4
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// IR-NEXT: %[[I:.+]] = alloca i32, align 4
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// IR-NEXT: store i32 %[[START:.+]], i32* %[[START_ADDR]], align 4
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// IR-NEXT: store i32 %[[END:.+]], i32* %[[END_ADDR]], align 4
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// IR-NEXT: store i32 %[[STEP:.+]], i32* %[[STEP_ADDR]], align 4
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// IR-NEXT: %[[TMP0:.+]] = load i32, i32* %[[START_ADDR]], align 4
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// IR-NEXT: store i32 %[[TMP0]], i32* %[[I]], align 4
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// IR-NEXT: br label %[[FOR_COND:.+]]
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// IR-EMPTY:
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// IR-NEXT: [[FOR_COND]]:
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// IR-NEXT: %[[TMP1:.+]] = load i32, i32* %[[I]], align 4
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// IR-NEXT: %[[TMP2:.+]] = load i32, i32* %[[END_ADDR]], align 4
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// IR-NEXT: %[[CMP:.+]] = icmp slt i32 %[[TMP1]], %[[TMP2]]
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// IR-NEXT: br i1 %[[CMP]], label %[[FOR_BODY:.+]], label %[[FOR_END:.+]]
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// IR-EMPTY:
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// IR-NEXT: [[FOR_BODY]]:
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// IR-NEXT: %[[TMP3:.+]] = load i32, i32* %[[START_ADDR]], align 4
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// IR-NEXT: %[[TMP4:.+]] = load i32, i32* %[[END_ADDR]], align 4
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// IR-NEXT: %[[TMP5:.+]] = load i32, i32* %[[STEP_ADDR]], align 4
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// IR-NEXT: %[[TMP6:.+]] = load i32, i32* %[[I]], align 4
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// IR-NEXT: call void (...) @body(i32 noundef %[[TMP3]], i32 noundef %[[TMP4]], i32 noundef %[[TMP5]], i32 noundef %[[TMP6]])
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// IR-NEXT: br label %[[FOR_INC:.+]]
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// IR-EMPTY:
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// IR-NEXT: [[FOR_INC]]:
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// IR-NEXT: %[[TMP7:.+]] = load i32, i32* %[[STEP_ADDR]], align 4
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// IR-NEXT: %[[TMP8:.+]] = load i32, i32* %[[I]], align 4
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// IR-NEXT: %[[ADD:.+]] = add nsw i32 %[[TMP8]], %[[TMP7]]
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// IR-NEXT: store i32 %[[ADD]], i32* %[[I]], align 4
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// IR-NEXT: br label %[[FOR_COND]], !llvm.loop ![[LOOP2:[0-9]+]]
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// IR-EMPTY:
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// IR-NEXT: [[FOR_END]]:
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// IR-NEXT: ret void
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// IR-NEXT: }
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extern "C" void func(int start, int end, int step) {
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#pragma omp unroll partial(4)
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for (int i = start; i < end; i+=step)
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body(start, end, step, i);
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}
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#endif /* HEADER */
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// IR: ![[LOOP2]] = distinct !{![[LOOP2]], ![[LOOPPROP3:[0-9]+]], ![[LOOPPROP4:[0-9]+]], ![[LOOPPROP5:[0-9]+]]}
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// IR: ![[LOOPPROP3]] = !{!"llvm.loop.mustprogress"}
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// IR: ![[LOOPPROP4]] = !{!"llvm.loop.unroll.count", i32 4}
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// IR: ![[LOOPPROP5]] = !{!"llvm.loop.unroll.enable"}
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