| 1 | // RUN: %clang_cc1 -triple x86_64-apple-darwin10 -emit-llvm %s -o - | FileCheck %s |
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| 2 | |
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| 3 | // rdar://7309675 |
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| 4 | // PR4678 |
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| 5 | namespace test0 { |
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| 6 | // test1 should be compmiled to be a varargs function in the IR even |
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| 7 | // though there is no way to do a va_begin. Otherwise, the optimizer |
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| 8 | // will warn about 'dropped arguments' at the call site. |
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| 9 | |
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| 10 | // CHECK-LABEL: define i32 @_ZN5test05test1Ez(...) |
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| 11 | int test1(...) { |
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| 12 | return -1; |
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| 13 | } |
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| 14 | |
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| 15 | // CHECK: call i32 (...) @_ZN5test05test1Ez(i32 0) |
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| 16 | void test() { |
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| 17 | test1(0); |
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| 18 | } |
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| 19 | } |
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| 20 | |
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| 21 | namespace test1 { |
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| 22 | struct A { |
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| 23 | int x; |
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| 24 | int y; |
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| 25 | }; |
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| 26 | |
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| 27 | void foo(...); |
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| 28 | |
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| 29 | void test() { |
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| 30 | A x; |
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| 31 | foo(x); |
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| 32 | } |
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| 33 | // CHECK-LABEL: define void @_ZN5test14testEv() |
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| 34 | // CHECK: [[X:%.*]] = alloca [[A:%.*]], align 4 |
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| 35 | // CHECK-NEXT: [[TMP:%.*]] = alloca [[A]], align 4 |
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| 36 | // CHECK-NEXT: [[T0:%.*]] = bitcast [[A]]* [[TMP]] to i8* |
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| 37 | // CHECK-NEXT: [[T1:%.*]] = bitcast [[A]]* [[X]] to i8* |
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| 38 | // CHECK-NEXT: call void @llvm.memcpy.p0i8.p0i8.i64(i8* align 4 [[T0]], i8* align 4 [[T1]], i64 8, i1 false) |
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| 39 | // CHECK-NEXT: [[T0:%.*]] = bitcast [[A]]* [[TMP]] to i64* |
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| 40 | // CHECK-NEXT: [[T1:%.*]] = load i64, i64* [[T0]], align 4 |
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| 41 | // CHECK-NEXT: call void (...) @_ZN5test13fooEz(i64 [[T1]]) |
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| 42 | // CHECK-NEXT: ret void |
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| 43 | } |
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| 44 | |
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