From 222e2a7620e6520ffaf4fc4e69d79c18da31542e Mon Sep 17 00:00:00 2001 From: "Zancanaro; Carlo" Date: Mon, 24 Sep 2012 09:58:17 +1000 Subject: Add the clang library to the repo (with some of my changes, too). --- clang/test/CodeGenObjC/bitfield-access.m | 44 ++++++++++++++++++++++++++++++++ 1 file changed, 44 insertions(+) create mode 100644 clang/test/CodeGenObjC/bitfield-access.m (limited to 'clang/test/CodeGenObjC/bitfield-access.m') diff --git a/clang/test/CodeGenObjC/bitfield-access.m b/clang/test/CodeGenObjC/bitfield-access.m new file mode 100644 index 0000000..521d2e5 --- /dev/null +++ b/clang/test/CodeGenObjC/bitfield-access.m @@ -0,0 +1,44 @@ +// RUN: %clang_cc1 -triple i386-apple-darwin10 -fobjc-fragile-abi -emit-llvm -o %t1 %s +// RUN: FileCheck -check-prefix=CHECK-I386 < %t1 %s + +// RUN: %clang_cc1 -triple armv6-apple-darwin10 -fobjc-fragile-abi -target-abi apcs-gnu -emit-llvm -o %t2 %s +// RUN: FileCheck -check-prefix=CHECK-ARM < %t2 %s + +@interface I0 { +@public + unsigned x:15; + unsigned y: 1; +} +@end + +// Check that we don't try to use an i32 load here, which would reach beyond the +// end of the structure. +// +// CHECK-I386: define i32 @f0( +// CHECK-I386: [[t0_0:%.*]] = load i16* {{.*}}, align 1 +// CHECK-I386: lshr i16 [[t0_0]], 7 +// CHECK-I386: } +int f0(I0 *a) { + return a->y; +} + +// Check that we can handled straddled loads. +// +// CHECK-ARM: define i32 @f1( +// CHECK-ARM: [[t1_ptr:%.*]] = getelementptr +// CHECK-ARM: [[t1_base:%.*]] = bitcast i8* [[t1_ptr]] to i32* +// CHECK-ARM: [[t1_0:%.*]] = load i32* [[t1_base]], align 1 +// CHECK-ARM: lshr i32 [[t1_0]], 1 +// CHECK-ARM: [[t1_base_2_cast:%.*]] = bitcast i32* %{{.*}} to i8* +// CHECK-ARM: [[t1_base_2:%.*]] = getelementptr i8* [[t1_base_2_cast]] +// CHECK-ARM: [[t1_1:%.*]] = load i8* [[t1_base_2]], align 1 +// CHECK-ARM: and i8 [[t1_1:%.*]], 1 +// CHECK-ARM: } +@interface I1 { +@public + unsigned x: 1; + unsigned y:32; +} +@end + +int f1(I1 *a) { return a->y; } -- cgit v1.2.3