derek.holloway
7502bf64a4
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57 lines
1.9 KiB
C
57 lines
1.9 KiB
C
// RUN: %clang_cc1 -triple x86_64 -target-cpu x86-64 -O1 -funroll-loops -emit-llvm -o - %s | FileCheck %s -check-prefix=CHECK-ENABLE-UNROLL
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// RUN: %clang_cc1 -triple x86_64 -target-cpu x86-64 -O1 -fno-unroll-loops -emit-llvm -o - %s | FileCheck %s -check-prefix=CHECK-DISABLE-UNROLL
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// REQUIRES: x86-registered-target
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// CHECK-ENABLE-UNROLL-LABEL: @for_test()
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// CHECK-ENABLE-UNROLL: br label %[[FORBODY:[a-z0-9_\.]+]]
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// CHECK-ENABLE-UNROLL: [[FORBODY]]:
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// CHECK-ENABLE-UNROLL: store
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// CHECK-ENABLE-UNROLL: store
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// CHECK-ENABLE-UNROLL: br i1 %[[EXITCOND:[a-z0-9_\.]+]], label %[[FORBODY5:[a-z0-9_\.]+]], label %[[FORBODY]]
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// CHECK-ENABLE-UNROLL: [[FORBODY5]]:
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// CHECK-ENABLE-UNROLL: fmul
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// CHECK-ENABLE-UNROLL: fadd
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// CHECK-ENABLE-UNROLL: store
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// CHECK-ENABLE-UNROLL: fmul
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// CHECK-ENABLE-UNROLL: fadd
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// CHECK-ENABLE-UNROLL: store
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// CHECK-ENABLE-UNROLL: fmul
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// CHECK-ENABLE-UNROLL: fadd
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// CHECK-ENABLE-UNROLL: store
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// CHECK-DISABLE-UNROLL-LABEL: @for_test()
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// CHECK-DISABLE-UNROLL: br label %[[FORBODY:[a-z0-9_\.]+]]
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// CHECK-DISABLE-UNROLL: [[FORBODY]]:
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// CHECK-DISABLE-UNROLL: store
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// CHECK-DISABLE-UNROLL-NOT: store
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// CHECK-DISABLE-UNROLL: br i1 %[[EXITCOND:[a-z0-9_\.]+]], label %[[FORBODY5:[a-z0-9_\.]+]], label %[[FORBODY]]
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// CHECK-DISABLE-UNROLL: [[FORBODY5]]:
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// CHECK-DISABLE-UNROLL: fmul
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// CHECK-DISABLE-UNROLL: fadd
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// CHECK-DISABLE-UNROLL: store
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// CHECK-DISABLE-UNROLL: fmul
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// CHECK-DISABLE-UNROLL: fadd
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// CHECK-DISABLE-UNROLL: store
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// CHECK-DISABLE-UNROLL-NOT: fmul
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// CHECK-DISABLE-UNROLL-NOT: fadd
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// CHECK-DISABLE-UNROLL-NOT: store
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// Limit scope of checking so this does not match "fadd" within git version string
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// CHECK-DISABLE-UNROLL: !0 =
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int printf(const char * restrict format, ...);
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void for_test(void) {
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double A[1000], B[1000];
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int L = 500;
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for (int i = 0; i < L; i++) {
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A[i] = i;
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}
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for (int i = 0; i < L; i++) {
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B[i] = A[i]*5;
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B[i]++;
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A[i] *= 7;
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A[i]++;
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}
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printf("%lf %lf\n", A[0], B[0]);
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}
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