https://github.com/banach-space created https://github.com/llvm/llvm-project/pull/176782
- **[CIR] Add cir.libc.memcpy Op** - **[Clang][CIR] Implement CIRGen logic for __builtin_bit_cast** From 8704f04fe26c14cfe4cfa47bbc3fc4b79b592b4d Mon Sep 17 00:00:00 2001 From: Andrzej Warzynski <[email protected]> Date: Mon, 19 Jan 2026 15:42:06 +0000 Subject: [PATCH 1/2] [CIR] Add cir.libc.memcpy Op The operation is a 1:1 mapping to libc's memcpy. NOTE: This patch merely upstreams code from * https://github.com/llvm/clangir. This Op was originally implemented by Vinicius Couto Espindola. Further modification were made by other ClangIR contributors. co-authored-by: Vinicius Couto Espindola <[email protected]> --- clang/include/clang/CIR/Dialect/IR/CIROps.td | 47 +++++++++++++++++++ clang/lib/CIR/CodeGen/CIRGenBuilder.h | 10 ++++ .../CIR/Lowering/DirectToLLVM/LowerToLLVM.cpp | 9 ++++ clang/test/CIR/IR/invalid-memcpy.cir | 37 +++++++++++++++ clang/test/CIR/IR/libc-memcpy.cir | 10 ++++ clang/test/CIR/Lowering/libc.cir | 12 +++++ 6 files changed, 125 insertions(+) create mode 100644 clang/test/CIR/IR/invalid-memcpy.cir create mode 100644 clang/test/CIR/IR/libc-memcpy.cir create mode 100644 clang/test/CIR/Lowering/libc.cir diff --git a/clang/include/clang/CIR/Dialect/IR/CIROps.td b/clang/include/clang/CIR/Dialect/IR/CIROps.td index db1696d50848c..c7f4df200d909 100644 --- a/clang/include/clang/CIR/Dialect/IR/CIROps.td +++ b/clang/include/clang/CIR/Dialect/IR/CIROps.td @@ -3439,6 +3439,53 @@ def CIR_CopyOp : CIR_Op<"copy",[ }]; } +//===----------------------------------------------------------------------===// +// MemCpyOp && MemMoveOp +//===----------------------------------------------------------------------===// + +class CIR_MemOp<string mnemonic> : CIR_Op<mnemonic, [ + AllTypesMatch<["dst", "src"]> +]> { + dag commonArgs = (ins + Arg<CIR_VoidPtrType, "", [MemWrite]>:$dst, + Arg<CIR_VoidPtrType, "", [MemRead]>:$src + ); +} + +def CIR_MemCpyOp : CIR_MemOp<"libc.memcpy"> { + let summary = "Equivalent to libc's `memcpy`"; + let description = [{ + Given two CIR pointers, `src` and `dst`, `cir.libc.memcpy` will copy `len` + bytes from the memory pointed by `src` to the memory pointed by `dst`. + + While `cir.copy` is meant to be used for implicit copies in the code where + the length of the copy is known, `cir.memcpy` copies only from and to void + pointers, requiring the copy length to be passed as an argument. + + Examples: + + ```mlir + // Copying 2 bytes from one array to a record: + %2 = cir.const #cir.int<2> : !u32i + cir.libc.memcpy %2 bytes from %arr to %record : !cir.ptr<!arr> -> !cir.ptr<!record> + ``` + }]; + + let arguments = !con(commonArgs, (ins CIR_AnyFundamentalUIntType:$len)); + + let assemblyFormat = [{ + $len `bytes` `from` $src `to` $dst attr-dict + `:` type($len) `` `,` qualified(type($src)) `->` qualified(type($dst)) + }]; + + let extraClassDeclaration = [{ + /// Returns the byte length type. + cir::IntType getLenTy() { return getLen().getType(); } + }]; +} + +// TODO: MemMoveOp + //===----------------------------------------------------------------------===// // ReturnAddrOp and FrameAddrOp //===----------------------------------------------------------------------===// diff --git a/clang/lib/CIR/CodeGen/CIRGenBuilder.h b/clang/lib/CIR/CodeGen/CIRGenBuilder.h index ff492edf0b04e..dc1ce9a901381 100644 --- a/clang/lib/CIR/CodeGen/CIRGenBuilder.h +++ b/clang/lib/CIR/CodeGen/CIRGenBuilder.h @@ -189,6 +189,16 @@ class CIRGenBuilderTy : public cir::CIRBaseBuilderTy { return getType<cir::RecordType>(nameAttr, kind); } + // + // Operation creation helpers + // -------------------------- + // + cir::MemCpyOp createMemCpy(mlir::Location loc, mlir::Value dst, + mlir::Value src, mlir::Value len) { + return cir::MemCpyOp::create(*this, loc, dst, src, len); + } + // --------------------------- + cir::DataMemberAttr getDataMemberAttr(cir::DataMemberType ty, unsigned memberIndex) { return cir::DataMemberAttr::get(ty, memberIndex); diff --git a/clang/lib/CIR/Lowering/DirectToLLVM/LowerToLLVM.cpp b/clang/lib/CIR/Lowering/DirectToLLVM/LowerToLLVM.cpp index 7625bcccd520f..a774b0dcc6ba8 100644 --- a/clang/lib/CIR/Lowering/DirectToLLVM/LowerToLLVM.cpp +++ b/clang/lib/CIR/Lowering/DirectToLLVM/LowerToLLVM.cpp @@ -187,6 +187,15 @@ mlir::LogicalResult CIRToLLVMCopyOpLowering::matchAndRewrite( return mlir::success(); } +mlir::LogicalResult CIRToLLVMMemCpyOpLowering::matchAndRewrite( + cir::MemCpyOp op, OpAdaptor adaptor, + mlir::ConversionPatternRewriter &rewriter) const { + rewriter.replaceOpWithNewOp<mlir::LLVM::MemcpyOp>( + op, adaptor.getDst(), adaptor.getSrc(), adaptor.getLen(), + /*isVolatile=*/false); + return mlir::success(); +} + mlir::LogicalResult CIRToLLVMSqrtOpLowering::matchAndRewrite( cir::SqrtOp op, OpAdaptor adaptor, mlir::ConversionPatternRewriter &rewriter) const { diff --git a/clang/test/CIR/IR/invalid-memcpy.cir b/clang/test/CIR/IR/invalid-memcpy.cir new file mode 100644 index 0000000000000..805d03adcb95f --- /dev/null +++ b/clang/test/CIR/IR/invalid-memcpy.cir @@ -0,0 +1,37 @@ +// RUN: cir-opt %s -verify-diagnostics -split-input-file + +!s8i = !cir.int<s, 8> +module { + // Should not memcpy with invalid length type. + cir.func @invalid_memcpy_len(%arg0 : !cir.ptr<!cir.void>, %arg1 : !s8i) { + // expected-error@+1 {{'cir.libc.memcpy' op operand #2 must be fundamental unsigned integer type, but got '!cir.int<s, 8>'}} + cir.libc.memcpy %arg1 bytes from %arg0 to %arg0 : !s8i, !cir.ptr<!cir.void> -> !cir.ptr<!cir.void> + cir.return + } +} + +// ----- + +!s8i = !cir.int<s, 8> +!u32i = !cir.int<u, 32> +module { + // Should not memcpy non-void pointers. + cir.func @invalid_memcpy_pointer_0(%arg0 : !cir.ptr<!s8i>, %arg1 : !u32i) { + // expected-error@+1 {{'cir.libc.memcpy' op operand #0 must be pointer to void type, but got '!cir.ptr<!cir.int<s, 8>>'}} + cir.libc.memcpy %arg1 bytes from %arg0 to %arg0 : !u32i, !cir.ptr<!s8i> -> !cir.ptr<!s8i> + cir.return + } +} + +// ----- + +!s8i = !cir.int<s, 8> +!u32i = !cir.int<u, 32> +module { + // Should not memcpy non-void pointers. + cir.func @invalid_memcpy_pointer_1(%arg0 : !cir.ptr<!cir.void>, %arg1 : !cir.ptr<!s8i>, %arg2 : !u32i) { + // expected-error@+1 {{'cir.libc.memcpy' op operand #1 must be pointer to void type, but got '!cir.ptr<!cir.int<s, 8>>'}} + cir.libc.memcpy %arg2 bytes from %arg1 to %arg0 : !u32i, !cir.ptr<!s8i> -> !cir.ptr<!cir.void> + cir.return + } +} diff --git a/clang/test/CIR/IR/libc-memcpy.cir b/clang/test/CIR/IR/libc-memcpy.cir new file mode 100644 index 0000000000000..6769092f3beb1 --- /dev/null +++ b/clang/test/CIR/IR/libc-memcpy.cir @@ -0,0 +1,10 @@ +// RUN: cir-opt %s --verify-roundtrip | FileCheck %s + +!u32i = !cir.int<u, 32> +module { + cir.func @shouldParseLibcMemcpyOp(%arg0 : !cir.ptr<!cir.void>, %arg1 : !u32i) { + // CHECK: cir.libc.memcpy + cir.libc.memcpy %arg1 bytes from %arg0 to %arg0 : !u32i, !cir.ptr<!cir.void> -> !cir.ptr<!cir.void> + cir.return + } +} diff --git a/clang/test/CIR/Lowering/libc.cir b/clang/test/CIR/Lowering/libc.cir new file mode 100644 index 0000000000000..74e384d08a74b --- /dev/null +++ b/clang/test/CIR/Lowering/libc.cir @@ -0,0 +1,12 @@ +// RUN: cir-opt %s -cir-to-llvm -o %t.mlir +// RUN: FileCheck --input-file=%t.mlir %s + +!void = !cir.void +!u64i = !cir.int<u, 64> +module { + cir.func @shouldLowerLibcMemcpyBuiltin(%arg0: !cir.ptr<!void>, %arg1: !cir.ptr<!void>, %arg2: !u64i) { + cir.libc.memcpy %arg2 bytes from %arg0 to %arg1 : !u64i, !cir.ptr<!void> -> !cir.ptr<!void> + // CHECK: "llvm.intr.memcpy"(%{{.+}}, %{{.+}}, %{{.+}}) <{isVolatile = false}> : (!llvm.ptr, !llvm.ptr, i64) -> () + cir.return + } +} From 7654a990f19351041c0e7bdd9d30b44554ac3778 Mon Sep 17 00:00:00 2001 From: Andrzej Warzynski <[email protected]> Date: Mon, 19 Jan 2026 17:11:58 +0000 Subject: [PATCH 2/2] [Clang][CIR] Implement CIRGen logic for __builtin_bit_cast NOTE: This patch merely upstreams code from * https://github.com/llvm/clangir. This Op was originally implemented by Sirui Mu in #762 Further modification were made by other ClangIR contributors. co-authored-by: Sirui Mu <[email protected]> --- clang/lib/CIR/CodeGen/CIRGenExprAggregate.cpp | 24 ++++ clang/lib/CIR/CodeGen/CIRGenExprScalar.cpp | 17 +++ clang/test/CIR/CodeGen/builtin-bit-cast.cpp | 135 ++++++++++++++++++ 3 files changed, 176 insertions(+) create mode 100644 clang/test/CIR/CodeGen/builtin-bit-cast.cpp diff --git a/clang/lib/CIR/CodeGen/CIRGenExprAggregate.cpp b/clang/lib/CIR/CodeGen/CIRGenExprAggregate.cpp index 8fcff6d0f9b84..9610d81929673 100644 --- a/clang/lib/CIR/CodeGen/CIRGenExprAggregate.cpp +++ b/clang/lib/CIR/CodeGen/CIRGenExprAggregate.cpp @@ -232,6 +232,30 @@ class AggExprEmitter : public StmtVisitor<AggExprEmitter> { // Stubs -- These should be moved up when they are implemented. void VisitCastExpr(CastExpr *e) { switch (e->getCastKind()) { + case CK_LValueToRValueBitCast: { + if (dest.isIgnored()) { + cgf.emitAnyExpr(e->getSubExpr(), AggValueSlot::ignored(), + /*ignoreResult=*/true); + break; + } + + LValue sourceLV = cgf.emitLValue(e->getSubExpr()); + Address sourceAddress = sourceLV.getAddress(); + Address destAddress = dest.getAddress(); + + auto loc = cgf.getLoc(e->getExprLoc()); + mlir::Value srcPtr = cgf.getBuilder().createBitcast( + loc, sourceAddress.getPointer(), cgf.voidPtrTy); + mlir::Value dstPtr = cgf.getBuilder().createBitcast( + loc, destAddress.getPointer(), cgf.voidPtrTy); + + mlir::Value sizeVal = cgf.getBuilder().getConstInt( + loc, cgf.sizeTy, + cgf.getContext().getTypeSizeInChars(e->getType()).getQuantity()); + cgf.getBuilder().createMemCpy(loc, dstPtr, srcPtr, sizeVal); + + break; + } case CK_LValueToRValue: // If we're loading from a volatile type, force the destination // into existence. diff --git a/clang/lib/CIR/CodeGen/CIRGenExprScalar.cpp b/clang/lib/CIR/CodeGen/CIRGenExprScalar.cpp index 4ce38f4e0a1f9..ce6f5e4e22891 100644 --- a/clang/lib/CIR/CodeGen/CIRGenExprScalar.cpp +++ b/clang/lib/CIR/CodeGen/CIRGenExprScalar.cpp @@ -2072,6 +2072,23 @@ mlir::Value ScalarExprEmitter::VisitCastExpr(CastExpr *ce) { llvm_unreachable("dependent cast kind in CIR gen!"); case clang::CK_BuiltinFnToFnPtr: llvm_unreachable("builtin functions are handled elsewhere"); + case CK_LValueBitCast: + case CK_LValueToRValueBitCast: { + LValue sourceLVal = cgf.emitLValue(subExpr); + Address sourceAddr = sourceLVal.getAddress(); + + mlir::Type destElemTy = cgf.convertTypeForMem(destTy); + mlir::Type destPtrTy = cgf.getBuilder().getPointerTo(destElemTy); + mlir::Value destPtr = cgf.getBuilder().createBitcast( + cgf.getLoc(subExpr->getExprLoc()), sourceAddr.getPointer(), destPtrTy); + + Address destAddr = Address(destPtr, destElemTy, sourceAddr.getAlignment(), + sourceAddr.isKnownNonNull()); + LValue destLVal = cgf.makeAddrLValue(destAddr, destTy); + // TOOD: Uncomment once TBAA is upstreamed + // destLVal.setTBAAInfo(TBAAAccessInfo::getMayAliasInfo()); + return emitLoadOfLValue(destLVal, ce->getExprLoc()); + } case CK_CPointerToObjCPointerCast: case CK_BlockPointerToObjCPointerCast: diff --git a/clang/test/CIR/CodeGen/builtin-bit-cast.cpp b/clang/test/CIR/CodeGen/builtin-bit-cast.cpp new file mode 100644 index 0000000000000..49fb2538472bd --- /dev/null +++ b/clang/test/CIR/CodeGen/builtin-bit-cast.cpp @@ -0,0 +1,135 @@ +// RUN: %clang_cc1 -std=c++20 -fclangir -emit-cir %s -o - | FileCheck --check-prefix=CIR %s +// RUN: %clang_cc1 -std=c++20 -fclangir -emit-llvm %s -o - | FileCheck --check-prefixes=LLVM,LLVM-VIA-CIR %s +// RUN: %clang_cc1 -std=c++20 -emit-llvm %s -o - | FileCheck --check-prefixes=LLVM,LLVM-DIRECT %s + +//============================================================================= +// NOTES +// +// Major differences between code lowered via ClangIR and directly to LLVM +// (e.g. different return types) are captured by using LLVM-VIA-CIR and LLVM-DIRECT labels. +// +// Minor differences (e.g. presence of `noundef` attached to argumens, `align` +// attribute attached to pointers), look for catch-alls like {{.*}}. +// +//============================================================================= + +float test_scalar(int &oper) { + return __builtin_bit_cast(float, oper); +} + +// CIR-LABEL: cir.func {{.*}} @_Z11test_scalarRi +// CIR: %[[#SRC_PTR:]] = cir.load{{.*}} %{{.+}} : !cir.ptr<!cir.ptr<!s32i>>, !cir.ptr<!s32i> +// CIR-NEXT: %[[#DST_PTR:]] = cir.cast bitcast %[[#SRC_PTR]] : !cir.ptr<!s32i> -> !cir.ptr<!cir.float> +// CIR-NEXT: %{{.+}} = cir.load{{.*}} %[[#DST_PTR]] : !cir.ptr<!cir.float>, !cir.float + +// LLVM-LABEL: define dso_local{{.*}} float @_Z11test_scalarRi +// LLVM: %[[#PTR:]] = load ptr, ptr %{{.+}}, align 8 +// LLVM-NEXT: %{{.+}} = load float, ptr %[[#PTR]], align 4 + +struct two_ints { + int x; + int y; +}; + +unsigned long test_aggregate_to_scalar(two_ints &ti) { + return __builtin_bit_cast(unsigned long, ti); +} + +// CIR-LABEL: cir.func {{.*}} @_Z24test_aggregate_to_scalarR8two_ints +// CIR: %[[#SRC_PTR:]] = cir.load{{.*}} %{{.+}} : !cir.ptr<!cir.ptr<!rec_two_ints>>, !cir.ptr<!rec_two_ints> +// CIR-NEXT: %[[#DST_PTR:]] = cir.cast bitcast %[[#SRC_PTR]] : !cir.ptr<!rec_two_ints> -> !cir.ptr<!u64i> +// CIR-NEXT: %{{.+}} = cir.load{{.*}} %[[#DST_PTR]] : !cir.ptr<!u64i>, !u64i + +// LLVM-LABEL: define dso_local{{.*}} i64 @_Z24test_aggregate_to_scalarR8two_ints +// LLVM: %[[#PTR:]] = load ptr, ptr %{{.+}}, align 8 +// LLVM-NEXT: %{{.+}} = load i64, ptr %[[#PTR]], align 4 + +struct two_floats { + float x; + float y; +}; + +two_floats test_aggregate_record(two_ints& ti) { + return __builtin_bit_cast(two_floats, ti); +} + +// CIR-LABEL: cir.func {{.*}} @_Z21test_aggregate_recordR8two_ints +// CIR: %[[#SRC_PTR:]] = cir.load{{.*}} %{{.+}} : !cir.ptr<!cir.ptr<!rec_two_ints>>, !cir.ptr<!rec_two_ints> +// CIR-NEXT: %[[#SRC_VOID_PTR:]] = cir.cast bitcast %[[#SRC_PTR]] : !cir.ptr<!rec_two_ints> -> !cir.ptr<!void> +// CIR-NEXT: %[[#DST_VOID_PTR:]] = cir.cast bitcast %{{.+}} : !cir.ptr<!rec_two_floats> -> !cir.ptr<!void> +// CIR-NEXT: %[[#SIZE:]] = cir.const #cir.int<8> : !u64i +// CIR-NEXT: cir.libc.memcpy %[[#SIZE]] bytes from %[[#SRC_VOID_PTR]] to %[[#DST_VOID_PTR]] : !u64i, !cir.ptr<!void> -> !cir.ptr<!void> + +// LLVM-LABEL: define dso_local{{.*}} %struct.two_floats @_Z21test_aggregate_recordR8two_ints +// LLVM: %[[DST_SLOT:.*]] = alloca %struct.two_floats{{.*}}, align 4 +// LLVM: %[[SRC_PTR:.*]] = load ptr, ptr {{.*}}, align 8 +// LLVM-NEXT: call void @llvm.memcpy.p0.p0.i64(ptr{{.*}} %[[DST_SLOT]], ptr{{.*}} %[[SRC_PTR]], i64 8, i1 false) +// LLVM-NEXT: %{{.+}} = load %struct.two_floats, ptr %[[DST_SLOT]], align 4 + +two_floats test_aggregate_array(int (&ary)[2]) { + return __builtin_bit_cast(two_floats, ary); +} + +// CIR-LABEL: cir.func {{.*}} @_Z20test_aggregate_arrayRA2_i +// CIR: %[[#SRC_PTR:]] = cir.load{{.*}} %{{.+}} : !cir.ptr<!cir.ptr<!cir.array<!s32i x 2>>>, !cir.ptr<!cir.array<!s32i x 2>> +// CIR-NEXT: %[[#SRC_VOID_PTR:]] = cir.cast bitcast %[[#SRC_PTR]] : !cir.ptr<!cir.array<!s32i x 2>> -> !cir.ptr<!void> +// CIR-NEXT: %[[#DST_VOID_PTR:]] = cir.cast bitcast %{{.+}} : !cir.ptr<!rec_two_floats> -> !cir.ptr<!void> +// CIR-NEXT: %[[#SIZE:]] = cir.const #cir.int<8> : !u64i +// CIR-NEXT: cir.libc.memcpy %[[#SIZE]] bytes from %[[#SRC_VOID_PTR]] to %[[#DST_VOID_PTR]] : !u64i, !cir.ptr<!void> -> !cir.ptr<!void> + +// LLVM-LABEL: define dso_local{{.*}} %struct.two_floats @_Z20test_aggregate_arrayRA2_i +// LLVM: %[[DST_SLOT:.*]] = alloca %struct.two_floats{{.*}}, align 4 +// LLVM: %[[SRC_PTR:.*]] = load ptr, ptr {{.*}}, align 8 +// LLVM-NEXT: call void @llvm.memcpy.p0.p0.i64(ptr{{.*}} %[[DST_SLOT]], ptr{{.*}} %[[SRC_PTR]], i64 8, i1 false) +// LLVM-NEXT: %{{.+}} = load %struct.two_floats, ptr %[[DST_SLOT]], align 4 + +two_ints test_scalar_to_aggregate(unsigned long ul) { + return __builtin_bit_cast(two_ints, ul); +} + +// CIR-LABEL: cir.func {{.*}} @_Z24test_scalar_to_aggregatem +// CIR: %[[#SRC_VOID_PTR:]] = cir.cast bitcast %{{.+}} : !cir.ptr<!u64i> -> !cir.ptr<!void> +// CIR-NEXT: %[[#DST_VOID_PTR:]] = cir.cast bitcast %{{.+}} : !cir.ptr<!rec_two_ints> -> !cir.ptr<!void> +// CIR-NEXT: %[[#SIZE:]] = cir.const #cir.int<8> : !u64i +// CIR-NEXT: cir.libc.memcpy %[[#SIZE]] bytes from %[[#SRC_VOID_PTR]] to %[[#DST_VOID_PTR]] : !u64i, !cir.ptr<!void> -> !cir.ptr<!void> + +// LLVM-DIRECT-LABEL: define dso_local i64 @_Z24test_scalar_to_aggregatem +// LLVM-VIA-CIR-LABEL: define dso_local %struct.two_ints @_Z24test_scalar_to_aggregatem +// LLVM: %[[DST_SLOT:.*]] = alloca %struct.two_ints{{.*}}, align 4 +// LLVM: call void @llvm.memcpy.p0.p0.i64(ptr{{.*}} %[[DST_SLOT]], ptr{{.*}} %{{.+}}, i64 8, i1 false) +// LLVM-DIRECT-NEXT: %{{.+}} = load i64, ptr %[[DST_SLOT]], align 4 +// LLVM-VIA-CIR-NEXT: %{{.+}} = load %struct.two_ints, ptr %[[DST_SLOT]], align 4 + +unsigned long test_array(int (&ary)[2]) { + return __builtin_bit_cast(unsigned long, ary); +} + +// CIR-LABEL: cir.func {{.*}} @_Z10test_arrayRA2_i +// CIR: %[[#SRC_PTR:]] = cir.load{{.*}} %{{.+}} : !cir.ptr<!cir.ptr<!cir.array<!s32i x 2>>>, !cir.ptr<!cir.array<!s32i x 2>> +// CIR-NEXT: %[[#DST_PTR:]] = cir.cast bitcast %[[#SRC_PTR]] : !cir.ptr<!cir.array<!s32i x 2>> -> !cir.ptr<!u64i> +// CIR-NEXT: %{{.+}} = cir.load{{.*}} %[[#DST_PTR]] : !cir.ptr<!u64i>, !u64i + +// LLVM-LABEL: define dso_local{{.*}} i64 @_Z10test_arrayRA2_i +// LLVM: %[[SRC_PTR:.*]] = load ptr, ptr %{{.+}}, align 8 +// LLVM-NEXT: %{{.+}} = load i64, ptr %[[SRC_PTR]], align 4 + +two_ints test_rvalue_aggregate() { + return __builtin_bit_cast(two_ints, 42ul); +} + +// CIR-LABEL: cir.func {{.*}} @_Z21test_rvalue_aggregatev() +// CIR: cir.scope { +// CIR-NEXT: %[[#TMP_SLOT:]] = cir.alloca !u64i, !cir.ptr<!u64i> +// CIR-NEXT: %[[#A:]] = cir.const #cir.int<42> : !u64i +// CIR-NEXT: cir.store{{.*}} %[[#A]], %[[#TMP_SLOT]] : !u64i, !cir.ptr<!u64i> +// CIR-NEXT: %[[#SRC_VOID_PTR:]] = cir.cast bitcast %[[#TMP_SLOT]] : !cir.ptr<!u64i> -> !cir.ptr<!void> +// CIR-NEXT: %[[#DST_VOID_PTR:]] = cir.cast bitcast %0 : !cir.ptr<!rec_two_ints> -> !cir.ptr<!void> +// CIR-NEXT: %[[#SIZE:]] = cir.const #cir.int<8> : !u64i +// CIR-NEXT: cir.libc.memcpy %[[#SIZE]] bytes from %[[#SRC_VOID_PTR]] to %[[#DST_VOID_PTR]] : !u64i, !cir.ptr<!void> -> !cir.ptr<!void> +// CIR-NEXT: } + +// LLVM-DIRECT-LABEL: define dso_local{{.*}} i64 @_Z21test_rvalue_aggregatev +// LLVM-VIA-CIR-LABEL: define dso_local{{.*}} %struct.two_ints @_Z21test_rvalue_aggregatev +// LLVM: %[[SRC_SLOT:.*]] = alloca i64{{.*}}, align 8 +// LLVM: store i64 42, ptr %[[SRC_SLOT]], align 8 +// LLVM-NEXT: call void @llvm.memcpy.p0.p0.i64(ptr{{.*}} %{{.+}}, ptr{{.*}} %[[SRC_SLOT]], i64 8, i1 false) _______________________________________________ cfe-commits mailing list [email protected] https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits
