Merge branch 'master' of ssh://bitbucket.org/czan/honours

1 files changed, 65 insertions, 0 deletions

diff --git a/clang/test/CodeGen/builtin-memfns.c b/clang/test/CodeGen/builtin-memfns.c
new file mode 100644
index 0000000..72d3406
--- /dev/null
+++ b/clang/test/CodeGen/builtin-memfns.c
@@ -0,0 +1,65 @@
+// RUN: %clang_cc1 -triple i386-pc-linux-gnu -emit-llvm < %s| FileCheck %s
+
+// CHECK: @test1
+// CHECK: call void @llvm.memset.p0i8.i32
+// CHECK: call void @llvm.memset.p0i8.i32
+// CHECK: call void @llvm.memcpy.p0i8.p0i8.i32
+// CHECK: call void @llvm.memmove.p0i8.p0i8.i32
+// CHECK-NOT: __builtin
+// CHECK: ret
+int test1(int argc, char **argv) {
+  unsigned char a = 0x11223344;
+  unsigned char b = 0x11223344;
+  __builtin_bzero(&a, sizeof(a));
+  __builtin_memset(&a, 0, sizeof(a));
+  __builtin_memcpy(&a, &b, sizeof(a));
+  __builtin_memmove(&a, &b, sizeof(a));
+  return 0;
+}
+
+// rdar://9289468
+
+// CHECK: @test2
+// CHECK: call void @llvm.memcpy.p0i8.p0i8.i32
+char* test2(char* a, char* b) {
+  return __builtin_memcpy(a, b, 4);
+}
+
+// CHECK: @test3
+// CHECK: call void @llvm.memset
+void test3(char *P) {
+  __builtin___memset_chk(P, 42, 128, 128);
+}
+
+// CHECK: @test4
+// CHECK: call void @llvm.memcpy
+void test4(char *P, char *Q) {
+  __builtin___memcpy_chk(P, Q, 128, 128);
+}
+
+// CHECK: @test5
+// CHECK: call void @llvm.memmove
+void test5(char *P, char *Q) {
+  __builtin___memmove_chk(P, Q, 128, 128);
+}
+
+// CHECK: @test6
+// CHECK: call void @llvm.memcpy
+int test6(char *X) {
+  return __builtin___memcpy_chk(X, X, 42, 42) != 0;
+}
+
+// CHECK: @test7
+// PR12094
+int test7(int *p) {
+  struct snd_pcm_hw_params_t* hwparams;  // incomplete type.
+  
+  // CHECK: call void @llvm.memset{{.*}}256, i32 4, i1 false)
+  __builtin_memset(p, 0, 256);  // Should be alignment = 4
+
+  // CHECK: call void @llvm.memset{{.*}}256, i32 1, i1 false)
+  __builtin_memset((char*)p, 0, 256);  // Should be alignment = 1
+
+  __builtin_memset(hwparams, 0, 256);  // No crash alignment = 1
+  // CHECK: call void @llvm.memset{{.*}}256, i32 1, i1 false)
+}