llvm-project/clang/test/CodeGen/variadic-gpfp-x86.c

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// RUN: %clang_cc1 -triple x86_64-unknown-linux-gnu -emit-llvm %s -o - | FileCheck %s
struct Bar {
float f1;
float f2;
unsigned u;
};
struct Bar foo(__builtin_va_list ap) {
return __builtin_va_arg(ap, struct Bar);
// CHECK: [[FPOP:%.*]] = getelementptr inbounds %struct.__va_list_tag* {{.*}}, i32 0, i32 1
// CHECK: [[FPO:%.*]] = load i32* [[FPOP]]
// CHECK: [[FPVEC:%.*]] = getelementptr i8* {{.*}}, i32 [[FPO]]
// CHECK: bitcast i8* [[FPVEC]] to <2 x float>*
}