diff --git a/llvm/lib/Target/RISCV/RISCVFrameLowering.cpp b/llvm/lib/Target/RISCV/RISCVFrameLowering.cpp --- a/llvm/lib/Target/RISCV/RISCVFrameLowering.cpp +++ b/llvm/lib/Target/RISCV/RISCVFrameLowering.cpp @@ -911,11 +911,21 @@ } } +static bool hasRVVFrameObject(const MachineFunction &MF) { + const MachineFrameInfo &MFI = MF.getFrameInfo(); + for (int I = 0, E = MFI.getObjectIndexEnd(); I != E; ++I) + if (MFI.getStackID(I) == TargetStackID::ScalableVector) + return true; + return false; +} + // Not preserve stack space within prologue for outgoing variables when the -// function contains variable size objects and let eliminateCallFramePseudoInstr -// preserve stack space for it. +// function contains variable size objects or there are vector objects accessed +// by the stack pointer. +// Let eliminateCallFramePseudoInstr preserve stack space for it. bool RISCVFrameLowering::hasReservedCallFrame(const MachineFunction &MF) const { - return !MF.getFrameInfo().hasVarSizedObjects(); + return !MF.getFrameInfo().hasVarSizedObjects() && + !(hasFP(MF) && hasRVVFrameObject(MF)); } // Eliminate ADJCALLSTACKDOWN, ADJCALLSTACKUP pseudo instructions. diff --git a/llvm/test/CodeGen/RISCV/rvv/rvv-out-arguments.ll b/llvm/test/CodeGen/RISCV/rvv/rvv-out-arguments.ll --- a/llvm/test/CodeGen/RISCV/rvv/rvv-out-arguments.ll +++ b/llvm/test/CodeGen/RISCV/rvv/rvv-out-arguments.ll @@ -65,10 +65,10 @@ define dso_local signext i32 @main() #0 { ; CHECK-LABEL: main: ; CHECK: # %bb.0: # %entry -; CHECK-NEXT: addi sp, sp, -128 -; CHECK-NEXT: sd ra, 120(sp) # 8-byte Folded Spill -; CHECK-NEXT: sd s0, 112(sp) # 8-byte Folded Spill -; CHECK-NEXT: addi s0, sp, 128 +; CHECK-NEXT: addi sp, sp, -112 +; CHECK-NEXT: sd ra, 104(sp) # 8-byte Folded Spill +; CHECK-NEXT: sd s0, 96(sp) # 8-byte Folded Spill +; CHECK-NEXT: addi s0, sp, 112 ; CHECK-NEXT: csrr a0, vlenb ; CHECK-NEXT: slli a0, a0, 3 ; CHECK-NEXT: sub sp, sp, a0 @@ -84,7 +84,7 @@ ; CHECK-NEXT: csrr a0, vlenb ; CHECK-NEXT: slli a0, a0, 3 ; CHECK-NEXT: sub a0, s0, a0 -; CHECK-NEXT: addi a0, a0, -128 +; CHECK-NEXT: addi a0, a0, -112 ; CHECK-NEXT: vs8r.v v8, (a0) ; CHECK-NEXT: addi a0, zero, 1 ; CHECK-NEXT: sw a0, -68(s0) @@ -102,7 +102,7 @@ ; CHECK-NEXT: csrr a2, vlenb ; CHECK-NEXT: slli a2, a2, 3 ; CHECK-NEXT: sub a2, s0, a2 -; CHECK-NEXT: addi a2, a2, -128 +; CHECK-NEXT: addi a2, a2, -112 ; CHECK-NEXT: vl8re32.v v8, (a2) ; CHECK-NEXT: lw a2, -76(s0) ; CHECK-NEXT: lw a3, -80(s0) @@ -112,15 +112,17 @@ ; CHECK-NEXT: lw a7, -96(s0) ; CHECK-NEXT: lw t0, -100(s0) ; CHECK-NEXT: lw t1, -104(s0) +; CHECK-NEXT: addi sp, sp, -16 ; CHECK-NEXT: sd t1, 8(sp) ; CHECK-NEXT: sd t0, 0(sp) ; CHECK-NEXT: call lots_args +; CHECK-NEXT: addi sp, sp, 16 ; CHECK-NEXT: lw a0, -68(s0) ; CHECK-NEXT: lw a1, -72(s0) ; CHECK-NEXT: csrr a2, vlenb ; CHECK-NEXT: slli a2, a2, 3 ; CHECK-NEXT: sub a2, s0, a2 -; CHECK-NEXT: addi a2, a2, -128 +; CHECK-NEXT: addi a2, a2, -112 ; CHECK-NEXT: vl8re32.v v8, (a2) ; CHECK-NEXT: lw a2, -76(s0) ; CHECK-NEXT: lw a3, -80(s0) @@ -130,16 +132,18 @@ ; CHECK-NEXT: lw a7, -96(s0) ; CHECK-NEXT: lw t0, -100(s0) ; CHECK-NEXT: lw t1, -104(s0) +; CHECK-NEXT: addi sp, sp, -16 ; CHECK-NEXT: sd t1, 8(sp) ; CHECK-NEXT: sd t0, 0(sp) ; CHECK-NEXT: call lots_args +; CHECK-NEXT: addi sp, sp, 16 ; CHECK-NEXT: mv a0, zero ; CHECK-NEXT: csrr a1, vlenb ; CHECK-NEXT: slli a1, a1, 3 ; CHECK-NEXT: add sp, sp, a1 -; CHECK-NEXT: ld s0, 112(sp) # 8-byte Folded Reload -; CHECK-NEXT: ld ra, 120(sp) # 8-byte Folded Reload -; CHECK-NEXT: addi sp, sp, 128 +; CHECK-NEXT: ld s0, 96(sp) # 8-byte Folded Reload +; CHECK-NEXT: ld ra, 104(sp) # 8-byte Folded Reload +; CHECK-NEXT: addi sp, sp, 112 ; CHECK-NEXT: ret entry: %retval = alloca i32, align 4