| 1 | // RUN: %clang_cc1 %s -triple x86_64-pc-win32 -emit-llvm -o - | FileCheck %s |
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| 2 | |
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| 3 | typedef __SIZE_TYPE__ size_t; |
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| 4 | typedef __WCHAR_TYPE__ wchar_t; |
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| 5 | |
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| 6 | int wmemcmp_test(const wchar_t *s1, const wchar_t *s2, size_t n) { |
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| 7 | // CHECK: [[S1:%.*]] = load |
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| 8 | // CHECK: [[S2:%.*]] = load |
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| 9 | // CHECK: [[N:%.*]] = load |
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| 10 | // CHECK: [[N0:%.*]] = icmp eq i64 [[N]], 0 |
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| 11 | // CHECK: br i1 [[N0]], label %[[EXIT:.*]], label %[[GT:.*]] |
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| 12 | |
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| 13 | // CHECK: [[GT]]: |
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| 14 | // CHECK: [[S1P:%.*]] = phi i16* [ [[S1]], %[[ENTRY:.*]] ], [ [[S1N:.*]], %[[NEXT:.*]] ] |
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| 15 | // CHECK: [[S2P:%.*]] = phi i16* [ [[S2]], %[[ENTRY]] ], [ [[S2N:.*]], %[[NEXT]] ] |
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| 16 | // CHECK: [[NP:%.*]] = phi i64 [ [[N]], %[[ENTRY]] ], [ [[NN:.*]], %[[NEXT]] ] |
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| 17 | // CHECK: [[S1L:%.*]] = load i16, i16* [[S1P]], align 2 |
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| 18 | // CHECK: [[S2L:%.*]] = load i16, i16* [[S2P]], align 2 |
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| 19 | // CHECK: [[CMPGT:%.*]] = icmp ugt i16 [[S1L]], [[S2L]] |
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| 20 | // CHECK: br i1 [[CMPGT]], label %[[EXIT]], label %[[LT:.*]] |
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| 21 | |
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| 22 | // CHECK: [[LT]]: |
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| 23 | // CHECK: [[CMPLT:%.*]] = icmp ult i16 [[S1L]], [[S2L]] |
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| 24 | // CHECK: br i1 [[CMPLT]], label %[[EXIT]], label %[[NEXT:.*]] |
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| 25 | |
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| 26 | // CHECK: [[NEXT]]: |
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| 27 | // CHECK: [[S1N]] = getelementptr inbounds i16, i16* [[S1P]], i32 1 |
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| 28 | // CHECK: [[S2N]] = getelementptr inbounds i16, i16* [[S2P]], i32 1 |
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| 29 | // CHECK: [[NN]] = sub i64 [[NP]], 1 |
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| 30 | // CHECK: [[NN0:%.*]] = icmp eq i64 [[NN]], 0 |
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| 31 | // CHECK: br i1 [[NN0]], label %[[EXIT]], label %[[GT]] |
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| 32 | // |
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| 33 | // CHECK: [[EXIT]]: |
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| 34 | // CHECK: [[RV:%.*]] = phi i32 [ 0, %[[ENTRY]] ], [ 1, %[[GT]] ], [ -1, %[[LT]] ], [ 0, %[[NEXT]] ] |
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| 35 | // CHECK: ret i32 [[RV]] |
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| 36 | return __builtin_wmemcmp(s1, s2, n); |
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| 37 | } |
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| 38 | |
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