21b43885b8
5b330e8d61 caused
a regression on s390:
https://bugs.llvm.org/show_bug.cgi?id=44190
we need to copy if if either the argument is non-byval or the argument is underaligned.
Differential Revision: https://reviews.llvm.org/D71282
24 lines
428 B
C
24 lines
428 B
C
// RUN: %clang_cc1 -triple s390x-linux-gnu -target-cpu z13 -emit-llvm -o - %s \
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// RUN: | FileCheck %s
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struct S0 {
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long f1;
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int f2 : 4;
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} d;
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#pragma pack(1)
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struct S1 {
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struct S0 S0_member;
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};
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void f(struct S0 arg) {
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arg.f2 = 1;
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}
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void g() {
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struct S1 g;
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// CHECK: alloca %struct.S0, align 8
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// CHECK: call void @llvm.memcpy.p0i8.p0i8.i64(i8* align 8 {{.*}}, i8* align 1 {{.*}}, i64 16
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f(g.S0_member);
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}
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