From 056abd2059c65a3e908193aeae16fad98017437c Mon Sep 17 00:00:00 2001 From: dim Date: Sun, 2 Dec 2012 13:20:44 +0000 Subject: Vendor import of clang release_32 branch r168974 (effectively, 3.2 RC2): http://llvm.org/svn/llvm-project/cfe/branches/release_32@168974 --- test/CodeGen/builtin-memfns.c | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) (limited to 'test/CodeGen/builtin-memfns.c') diff --git a/test/CodeGen/builtin-memfns.c b/test/CodeGen/builtin-memfns.c index 72d3406..4a06160 100644 --- a/test/CodeGen/builtin-memfns.c +++ b/test/CodeGen/builtin-memfns.c @@ -63,3 +63,23 @@ int test7(int *p) { __builtin_memset(hwparams, 0, 256); // No crash alignment = 1 // CHECK: call void @llvm.memset{{.*}}256, i32 1, i1 false) } + +// +// Make sure we don't over-estimate the alignment of fields of +// packed structs. +struct PS { + int modes[4]; +} __attribute__((packed)); +struct PS ps; +void test8(int *arg) { + // CHECK: @test8 + // CHECK: call void @llvm.memcpy{{.*}} 16, i32 1, i1 false) + __builtin_memcpy(arg, ps.modes, sizeof(struct PS)); +} + +__attribute((aligned(16))) int x[4], y[4]; +void test9() { + // CHECK: @test9 + // CHECK: call void @llvm.memcpy{{.*}} 16, i32 16, i1 false) + __builtin_memcpy(x, y, sizeof(y)); +} -- cgit v1.1