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94473f4db6
Generate nuw GEPs for struct member accesses, as inbounds + non-negative implies nuw. Regression tests are updated using update scripts where possible, and by find + replace where not.
57 lines
1.7 KiB
C++
57 lines
1.7 KiB
C++
// REQUIRES: x86-registered-target
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// RUN: %clang_cc1 %s -triple i386-apple-darwin10 -fasm-blocks -emit-llvm -o - | FileCheck %s
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struct A {
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int a1;
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int a2;
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struct B {
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int b1;
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int b2;
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} a3;
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};
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namespace asdf {
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A a_global;
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}
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extern "C" int test_param_field(A p) {
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// CHECK: define{{.*}} i32 @test_param_field(ptr noundef byval(%struct.A) align 4 %p)
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// CHECK: getelementptr inbounds nuw %struct.A, ptr %p, i32 0, i32 0
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// CHECK: call i32 asm sideeffect inteldialect "mov eax, $1"
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// CHECK: ret i32
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__asm mov eax, p.a1
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}
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extern "C" int test_namespace_global() {
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// CHECK: define{{.*}} i32 @test_namespace_global()
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// CHECK: call i32 asm sideeffect inteldialect "mov eax, $1", "{{.*}}"(ptr elementtype(i32) getelementptr inbounds nuw (%"struct.A::B", ptr getelementptr inbounds nuw (%struct.A, ptr @_ZN4asdf8a_globalE, i32 0, i32 2), i32 0, i32 1))
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// CHECK: ret i32
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__asm mov eax, asdf::a_global.a3.b2
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}
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template <bool Signed>
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struct make_storage_type {
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struct type {
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struct B {
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int a;
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int x;
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} b;
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};
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};
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template <bool Signed>
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struct msvc_dcas_x86 {
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typedef typename make_storage_type<Signed>::type storage_type;
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void store() __asm("PR26001") {
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storage_type p;
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__asm mov edx, p.b.x;
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}
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};
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template void msvc_dcas_x86<false>::store();
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// CHECK: define weak_odr void @"\01PR26001"(
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// CHECK: %[[P:.*]] = alloca %"struct.make_storage_type<false>::type", align 4
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// CHECK: %[[B:.*]] = getelementptr inbounds nuw %"struct.make_storage_type<false>::type", ptr %[[P]], i32 0, i32 0
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// CHECK: %[[X:.*]] = getelementptr inbounds nuw %"struct.make_storage_type<false>::type::B", ptr %[[B]], i32 0, i32 1
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// CHECK: call void asm sideeffect inteldialect "mov edx, $0", "*m,~{edx},~{dirflag},~{fpsr},~{flags}"(ptr elementtype(i32) %[[X]])
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