c46827c7ed
LLVM IR recently added a Type parameter to the byval Attribute, so that when pointers become opaque and no longer have an element type the information will still be present in IR. For now the Type parameter is optional (which is why Clang didn't need this change at the time), but it will become mandatory soon. llvm-svn: 362652
28 lines
937 B
C
28 lines
937 B
C
// This verifies that structs returned from functions by value are passed
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// correctly according to their attributes and the ABI.
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// SEE: PR3835
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// RUN: %clang_cc1 -triple i386-unknown-unknown -emit-llvm %s -o - | FileCheck %s
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typedef int T0;
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typedef struct { int a[16]; } T1;
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T0 __attribute__((const)) f0(void);
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T0 __attribute__((pure)) f1(void);
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T1 __attribute__((const)) f2(void);
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T1 __attribute__((pure)) f3(void);
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void __attribute__((const)) f4(T1 a);
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void __attribute__((pure)) f5(T1 a);
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void *ps[] = { f0, f1, f2, f3, f4, f5 };
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// CHECK: declare i32 @f0() [[RN:#[0-9]+]]
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// CHECK: declare i32 @f1() [[RO:#[0-9]+]]
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// CHECK: declare void @f2({{.*}} sret)
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// CHECK: declare void @f3({{.*}} sret)
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// CHECK: declare void @f4({{.*}} byval({{.*}}) align 4)
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// CHECK: declare void @f5({{.*}} byval({{.*}}) align 4)
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// CHECK: attributes [[RN]] = { nounwind readnone{{.*}} }
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// CHECK: attributes [[RO]] = { nounwind readonly{{.*}} }
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