diff options
Diffstat (limited to 'llvm/lib/Target/AArch64/AArch64CallingConvention.td')
| -rw-r--r-- | llvm/lib/Target/AArch64/AArch64CallingConvention.td | 17 |
1 files changed, 16 insertions, 1 deletions
diff --git a/llvm/lib/Target/AArch64/AArch64CallingConvention.td b/llvm/lib/Target/AArch64/AArch64CallingConvention.td index fdcc890bf589..4b7ce565eb1e 100644 --- a/llvm/lib/Target/AArch64/AArch64CallingConvention.td +++ b/llvm/lib/Target/AArch64/AArch64CallingConvention.td @@ -69,6 +69,10 @@ def CC_AArch64_AAPCS : CallingConv<[ // A SwiftError is passed in X21. CCIfSwiftError<CCIfType<[i64], CCAssignToRegWithShadow<[X21], [W21]>>>, + // Pass SwiftAsync in an otherwise callee saved register so that it will be + // preserved for normal function calls. + CCIfSwiftAsync<CCIfType<[i64], CCAssignToRegWithShadow<[X22], [W22]>>>, + CCIfConsecutiveRegs<CCCustom<"CC_AArch64_Custom_Block">>, CCIfType<[nxv16i8, nxv8i16, nxv4i32, nxv2i64, nxv2f16, nxv4f16, nxv8f16, @@ -166,7 +170,8 @@ def RetCC_AArch64_AAPCS : CallingConv<[ // Vararg functions on windows pass floats in integer registers let Entry = 1 in def CC_AArch64_Win64_VarArg : CallingConv<[ - CCIfType<[f16, bf16, f32], CCPromoteToType<f64>>, + CCIfType<[f16, bf16], CCBitConvertToType<i16>>, + CCIfType<[f32], CCBitConvertToType<i32>>, CCIfType<[f64], CCBitConvertToType<i64>>, CCDelegateTo<CC_AArch64_AAPCS> ]>; @@ -202,6 +207,10 @@ def CC_AArch64_DarwinPCS : CallingConv<[ // A SwiftError is passed in X21. CCIfSwiftError<CCIfType<[i64], CCAssignToRegWithShadow<[X21], [W21]>>>, + // Pass SwiftAsync in an otherwise callee saved register so that it will be + // preserved for normal function calls. + CCIfSwiftAsync<CCIfType<[i64], CCAssignToRegWithShadow<[X22], [W22]>>>, + CCIfConsecutiveRegs<CCCustom<"CC_AArch64_Custom_Block">>, // Handle i1, i8, i16, i32, i64, f32, f64 and v2f64 by passing in registers, @@ -412,6 +421,9 @@ def CSR_AArch64_SVE_AAPCS : CalleeSavedRegs<(add (sequence "Z%u", 8, 23), X19, X20, X21, X22, X23, X24, X25, X26, X27, X28, LR, FP)>; +def CSR_AArch64_AAPCS_SwiftTail + : CalleeSavedRegs<(sub CSR_AArch64_AAPCS, X20, X22)>; + // Constructors and destructors return 'this' in the iOS 64-bit C++ ABI; since // 'this' and the pointer return value are both passed in X0 in these cases, // this can be partially modelled by treating X0 as a callee-saved register; @@ -464,6 +476,9 @@ def CSR_Darwin_AArch64_AAPCS_ThisReturn def CSR_Darwin_AArch64_AAPCS_SwiftError : CalleeSavedRegs<(sub CSR_Darwin_AArch64_AAPCS, X21)>; +def CSR_Darwin_AArch64_AAPCS_SwiftTail + : CalleeSavedRegs<(sub CSR_Darwin_AArch64_AAPCS, X20, X22)>; + // The function used by Darwin to obtain the address of a thread-local variable // guarantees more than a normal AAPCS function. x16 and x17 are used on the // fast path for calculation, but other registers except X0 (argument/return) |