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| author | Peter Collingbourne <peter@pcc.me.uk> | 2018-01-24 18:59:58 +0000 |
|---|---|---|
| committer | Peter Collingbourne <peter@pcc.me.uk> | 2018-01-24 18:59:58 +0000 |
| commit | 9e31f0a389528651b289ccbe7d05c8edfaf959f7 (patch) | |
| tree | 3822f18458719ce68a207001b01f4c118c79908d /clang/test/CodeGen/wmemcmp.c | |
| parent | 123ce97fac78bc4519afd5d2aba17c59c5717aad (diff) | |
| download | bcm5719-llvm-9e31f0a389528651b289ccbe7d05c8edfaf959f7.tar.gz bcm5719-llvm-9e31f0a389528651b289ccbe7d05c8edfaf959f7.zip | |
IRGen: Emit an inline implementation of __builtin_wmemcmp on MSVCRT platforms.
The MSVC runtime library does not provide a definition of wmemcmp,
so we need an inline implementation.
Differential Revision: https://reviews.llvm.org/D42441
llvm-svn: 323362
Diffstat (limited to 'clang/test/CodeGen/wmemcmp.c')
| -rw-r--r-- | clang/test/CodeGen/wmemcmp.c | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/clang/test/CodeGen/wmemcmp.c b/clang/test/CodeGen/wmemcmp.c new file mode 100644 index 00000000000..ad0886192bc --- /dev/null +++ b/clang/test/CodeGen/wmemcmp.c @@ -0,0 +1,37 @@ +// RUN: %clang_cc1 %s -triple x86_64-pc-win32 -emit-llvm -o - | FileCheck %s + +typedef __SIZE_TYPE__ size_t; +typedef __WCHAR_TYPE__ wchar_t; + +int wmemcmp_test(const wchar_t *s1, const wchar_t *s2, size_t n) { + // CHECK: [[S1:%.*]] = load + // CHECK: [[S2:%.*]] = load + // CHECK: [[N:%.*]] = load + // CHECK: [[N0:%.*]] = icmp eq i64 [[N]], 0 + // CHECK: br i1 [[N0]], label %[[EXIT:.*]], label %[[GT:.*]] + + // CHECK: [[GT]]: + // CHECK: [[S1P:%.*]] = phi i16* [ [[S1]], %[[ENTRY:.*]] ], [ [[S1N:.*]], %[[NEXT:.*]] ] + // CHECK: [[S2P:%.*]] = phi i16* [ [[S2]], %[[ENTRY]] ], [ [[S2N:.*]], %[[NEXT]] ] + // CHECK: [[NP:%.*]] = phi i64 [ [[N]], %[[ENTRY]] ], [ [[NN:.*]], %[[NEXT]] ] + // CHECK: [[S1L:%.*]] = load i16, i16* [[S1P]], align 2 + // CHECK: [[S2L:%.*]] = load i16, i16* [[S2P]], align 2 + // CHECK: [[CMPGT:%.*]] = icmp ugt i16 [[S1L]], [[S2L]] + // CHECK: br i1 [[CMPGT]], label %[[EXIT]], label %[[LT:.*]] + + // CHECK: [[LT]]: + // CHECK: [[CMPLT:%.*]] = icmp ult i16 [[S1L]], [[S2L]] + // CHECK: br i1 [[CMPLT]], label %[[EXIT]], label %[[NEXT:.*]] + + // CHECK: [[NEXT]]: + // CHECK: [[S1N]] = getelementptr inbounds i16, i16* [[S1P]], i32 1 + // CHECK: [[S2N]] = getelementptr inbounds i16, i16* [[S2P]], i32 1 + // CHECK: [[NN]] = sub i64 [[NP]], 1 + // CHECK: [[NN0:%.*]] = icmp eq i64 [[NN]], 0 + // CHECK: br i1 [[NN0]], label %[[EXIT]], label %[[GT]] + // + // CHECK: [[EXIT]]: + // CHECK: [[RV:%.*]] = phi i32 [ 0, %[[ENTRY]] ], [ 1, %[[GT]] ], [ -1, %[[LT]] ], [ 0, %[[NEXT]] ] + // CHECK: ret i32 [[RV]] + return __builtin_wmemcmp(s1, s2, n); +} |
