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[CIR][ABI][AArch64] convers aarch64_be return struct case #1049

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Nov 5, 2024
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[CIR][ABI][AArch64] convers aarch64_be return struct case #1049

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[CIR][ABI][AArch64] convers aarch64_be return struct case
gitoleg Nov 2, 2024
830cab3
clang-format ...
gitoleg Nov 2, 2024
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3 changes: 2 additions & 1 deletion clang/lib/CIR/Dialect/Transforms/TargetLowering/Targets/AArch64.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -134,7 +134,8 @@ ABIArgInfo AArch64ABIInfo::classifyReturnType(Type RetTy,
mlir::cir::ArrayType::get(LT.getMLIRContext(), baseTy, Size / 64));
}

cir_cconv_unreachable("NYI");
return ABIArgInfo::getDirect(
IntType::get(LT.getMLIRContext(), Size, false));
}

return getNaturalAlignIndirect(RetTy);
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17 changes: 17 additions & 0 deletions clang/test/CIR/CallConvLowering/AArch64/aarch64_be-cc-structs.c
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@@ -0,0 +1,17 @@
// RUN: %clang_cc1 -triple aarch64_be-unknown-linux-gnu -fclangir -fclangir-call-conv-lowering -emit-cir-flat -mmlir --mlir-print-ir-after=cir-call-conv-lowering %s -o %t.cir
// RUN: FileCheck --input-file=%t.cir %s

typedef struct {
int a;
int b;
} __attribute__((alligned (4))) S;

// CHECK: cir.func {{.*@init}}() -> !u64i
// CHECK: %[[#V0:]] = cir.alloca !ty_S, !cir.ptr<!ty_S>, ["__retval"] {alignment = 4 : i64}
// CHECK: %[[#V1:]] = cir.cast(bitcast, %[[#V0]] : !cir.ptr<!ty_S>), !cir.ptr<!u64i>
// CHECK: %[[#V2:]] = cir.load %[[#V1]] : !cir.ptr<!u64i>, !u64i
// CHECK: cir.return %[[#V2]] : !u64i
S init() {
S s;
return s;
}