| ; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py |
| ; RUN: llc < %s -mtriple=riscv32 -mattr=+m | FileCheck %s --check-prefix=RV32I |
| ; RUN: llc < %s -mtriple=riscv64 -mattr=+m | FileCheck %s --check-prefix=RV64I |
| ; RUN: llc < %s -mtriple=riscv32 -mattr=+m,+experimental-zbb | FileCheck %s --check-prefix=RV32IZbb |
| ; RUN: llc < %s -mtriple=riscv64 -mattr=+m,+experimental-zbb | FileCheck %s --check-prefix=RV64IZbb |
| |
| declare i4 @llvm.usub.sat.i4(i4, i4) |
| declare i8 @llvm.usub.sat.i8(i8, i8) |
| declare i16 @llvm.usub.sat.i16(i16, i16) |
| declare i32 @llvm.usub.sat.i32(i32, i32) |
| declare i64 @llvm.usub.sat.i64(i64, i64) |
| |
| define i32 @func32(i32 %x, i32 %y, i32 %z) nounwind { |
| ; RV32I-LABEL: func32: |
| ; RV32I: # %bb.0: |
| ; RV32I-NEXT: mul a1, a1, a2 |
| ; RV32I-NEXT: sub a1, a0, a1 |
| ; RV32I-NEXT: sltu a2, a0, a1 |
| ; RV32I-NEXT: mv a0, zero |
| ; RV32I-NEXT: bnez a2, .LBB0_2 |
| ; RV32I-NEXT: # %bb.1: |
| ; RV32I-NEXT: mv a0, a1 |
| ; RV32I-NEXT: .LBB0_2: |
| ; RV32I-NEXT: ret |
| ; |
| ; RV64I-LABEL: func32: |
| ; RV64I: # %bb.0: |
| ; RV64I-NEXT: slli a0, a0, 32 |
| ; RV64I-NEXT: srli a0, a0, 32 |
| ; RV64I-NEXT: mul a1, a1, a2 |
| ; RV64I-NEXT: slli a1, a1, 32 |
| ; RV64I-NEXT: srli a1, a1, 32 |
| ; RV64I-NEXT: sub a1, a0, a1 |
| ; RV64I-NEXT: sltu a2, a0, a1 |
| ; RV64I-NEXT: mv a0, zero |
| ; RV64I-NEXT: bnez a2, .LBB0_2 |
| ; RV64I-NEXT: # %bb.1: |
| ; RV64I-NEXT: mv a0, a1 |
| ; RV64I-NEXT: .LBB0_2: |
| ; RV64I-NEXT: ret |
| ; |
| ; RV32IZbb-LABEL: func32: |
| ; RV32IZbb: # %bb.0: |
| ; RV32IZbb-NEXT: mul a1, a1, a2 |
| ; RV32IZbb-NEXT: maxu a0, a0, a1 |
| ; RV32IZbb-NEXT: sub a0, a0, a1 |
| ; RV32IZbb-NEXT: ret |
| ; |
| ; RV64IZbb-LABEL: func32: |
| ; RV64IZbb: # %bb.0: |
| ; RV64IZbb-NEXT: slli a0, a0, 32 |
| ; RV64IZbb-NEXT: srli a0, a0, 32 |
| ; RV64IZbb-NEXT: mul a1, a1, a2 |
| ; RV64IZbb-NEXT: slli a1, a1, 32 |
| ; RV64IZbb-NEXT: srli a1, a1, 32 |
| ; RV64IZbb-NEXT: maxu a0, a0, a1 |
| ; RV64IZbb-NEXT: sub a0, a0, a1 |
| ; RV64IZbb-NEXT: ret |
| %a = mul i32 %y, %z |
| %tmp = call i32 @llvm.usub.sat.i32(i32 %x, i32 %a) |
| ret i32 %tmp |
| } |
| |
| define i64 @func64(i64 %x, i64 %y, i64 %z) nounwind { |
| ; RV32I-LABEL: func64: |
| ; RV32I: # %bb.0: |
| ; RV32I-NEXT: sltu a2, a0, a4 |
| ; RV32I-NEXT: sub a3, a1, a5 |
| ; RV32I-NEXT: sub a2, a3, a2 |
| ; RV32I-NEXT: sub a3, a0, a4 |
| ; RV32I-NEXT: beq a2, a1, .LBB1_2 |
| ; RV32I-NEXT: # %bb.1: |
| ; RV32I-NEXT: sltu a4, a1, a2 |
| ; RV32I-NEXT: j .LBB1_3 |
| ; RV32I-NEXT: .LBB1_2: |
| ; RV32I-NEXT: sltu a4, a0, a3 |
| ; RV32I-NEXT: .LBB1_3: |
| ; RV32I-NEXT: mv a0, zero |
| ; RV32I-NEXT: mv a1, zero |
| ; RV32I-NEXT: bnez a4, .LBB1_5 |
| ; RV32I-NEXT: # %bb.4: |
| ; RV32I-NEXT: mv a0, a3 |
| ; RV32I-NEXT: mv a1, a2 |
| ; RV32I-NEXT: .LBB1_5: |
| ; RV32I-NEXT: ret |
| ; |
| ; RV64I-LABEL: func64: |
| ; RV64I: # %bb.0: |
| ; RV64I-NEXT: sub a1, a0, a2 |
| ; RV64I-NEXT: sltu a2, a0, a1 |
| ; RV64I-NEXT: mv a0, zero |
| ; RV64I-NEXT: bnez a2, .LBB1_2 |
| ; RV64I-NEXT: # %bb.1: |
| ; RV64I-NEXT: mv a0, a1 |
| ; RV64I-NEXT: .LBB1_2: |
| ; RV64I-NEXT: ret |
| ; |
| ; RV32IZbb-LABEL: func64: |
| ; RV32IZbb: # %bb.0: |
| ; RV32IZbb-NEXT: sltu a2, a0, a4 |
| ; RV32IZbb-NEXT: sub a3, a1, a5 |
| ; RV32IZbb-NEXT: sub a2, a3, a2 |
| ; RV32IZbb-NEXT: sub a3, a0, a4 |
| ; RV32IZbb-NEXT: beq a2, a1, .LBB1_2 |
| ; RV32IZbb-NEXT: # %bb.1: |
| ; RV32IZbb-NEXT: sltu a4, a1, a2 |
| ; RV32IZbb-NEXT: j .LBB1_3 |
| ; RV32IZbb-NEXT: .LBB1_2: |
| ; RV32IZbb-NEXT: sltu a4, a0, a3 |
| ; RV32IZbb-NEXT: .LBB1_3: |
| ; RV32IZbb-NEXT: mv a0, zero |
| ; RV32IZbb-NEXT: mv a1, zero |
| ; RV32IZbb-NEXT: bnez a4, .LBB1_5 |
| ; RV32IZbb-NEXT: # %bb.4: |
| ; RV32IZbb-NEXT: mv a0, a3 |
| ; RV32IZbb-NEXT: mv a1, a2 |
| ; RV32IZbb-NEXT: .LBB1_5: |
| ; RV32IZbb-NEXT: ret |
| ; |
| ; RV64IZbb-LABEL: func64: |
| ; RV64IZbb: # %bb.0: |
| ; RV64IZbb-NEXT: maxu a0, a0, a2 |
| ; RV64IZbb-NEXT: sub a0, a0, a2 |
| ; RV64IZbb-NEXT: ret |
| %a = mul i64 %y, %z |
| %tmp = call i64 @llvm.usub.sat.i64(i64 %x, i64 %z) |
| ret i64 %tmp |
| } |
| |
| define i16 @func16(i16 %x, i16 %y, i16 %z) nounwind { |
| ; RV32I-LABEL: func16: |
| ; RV32I: # %bb.0: |
| ; RV32I-NEXT: lui a3, 16 |
| ; RV32I-NEXT: addi a3, a3, -1 |
| ; RV32I-NEXT: and a0, a0, a3 |
| ; RV32I-NEXT: mul a1, a1, a2 |
| ; RV32I-NEXT: and a1, a1, a3 |
| ; RV32I-NEXT: sub a1, a0, a1 |
| ; RV32I-NEXT: sltu a2, a0, a1 |
| ; RV32I-NEXT: mv a0, zero |
| ; RV32I-NEXT: bnez a2, .LBB2_2 |
| ; RV32I-NEXT: # %bb.1: |
| ; RV32I-NEXT: mv a0, a1 |
| ; RV32I-NEXT: .LBB2_2: |
| ; RV32I-NEXT: ret |
| ; |
| ; RV64I-LABEL: func16: |
| ; RV64I: # %bb.0: |
| ; RV64I-NEXT: lui a3, 16 |
| ; RV64I-NEXT: addiw a3, a3, -1 |
| ; RV64I-NEXT: and a0, a0, a3 |
| ; RV64I-NEXT: mul a1, a1, a2 |
| ; RV64I-NEXT: and a1, a1, a3 |
| ; RV64I-NEXT: sub a1, a0, a1 |
| ; RV64I-NEXT: sltu a2, a0, a1 |
| ; RV64I-NEXT: mv a0, zero |
| ; RV64I-NEXT: bnez a2, .LBB2_2 |
| ; RV64I-NEXT: # %bb.1: |
| ; RV64I-NEXT: mv a0, a1 |
| ; RV64I-NEXT: .LBB2_2: |
| ; RV64I-NEXT: ret |
| ; |
| ; RV32IZbb-LABEL: func16: |
| ; RV32IZbb: # %bb.0: |
| ; RV32IZbb-NEXT: zext.h a0, a0 |
| ; RV32IZbb-NEXT: mul a1, a1, a2 |
| ; RV32IZbb-NEXT: zext.h a1, a1 |
| ; RV32IZbb-NEXT: maxu a0, a0, a1 |
| ; RV32IZbb-NEXT: sub a0, a0, a1 |
| ; RV32IZbb-NEXT: ret |
| ; |
| ; RV64IZbb-LABEL: func16: |
| ; RV64IZbb: # %bb.0: |
| ; RV64IZbb-NEXT: zext.h a0, a0 |
| ; RV64IZbb-NEXT: mul a1, a1, a2 |
| ; RV64IZbb-NEXT: zext.h a1, a1 |
| ; RV64IZbb-NEXT: maxu a0, a0, a1 |
| ; RV64IZbb-NEXT: sub a0, a0, a1 |
| ; RV64IZbb-NEXT: ret |
| %a = mul i16 %y, %z |
| %tmp = call i16 @llvm.usub.sat.i16(i16 %x, i16 %a) |
| ret i16 %tmp |
| } |
| |
| define i8 @func8(i8 %x, i8 %y, i8 %z) nounwind { |
| ; RV32I-LABEL: func8: |
| ; RV32I: # %bb.0: |
| ; RV32I-NEXT: andi a0, a0, 255 |
| ; RV32I-NEXT: mul a1, a1, a2 |
| ; RV32I-NEXT: andi a1, a1, 255 |
| ; RV32I-NEXT: sub a1, a0, a1 |
| ; RV32I-NEXT: sltu a2, a0, a1 |
| ; RV32I-NEXT: mv a0, zero |
| ; RV32I-NEXT: bnez a2, .LBB3_2 |
| ; RV32I-NEXT: # %bb.1: |
| ; RV32I-NEXT: mv a0, a1 |
| ; RV32I-NEXT: .LBB3_2: |
| ; RV32I-NEXT: ret |
| ; |
| ; RV64I-LABEL: func8: |
| ; RV64I: # %bb.0: |
| ; RV64I-NEXT: andi a0, a0, 255 |
| ; RV64I-NEXT: mul a1, a1, a2 |
| ; RV64I-NEXT: andi a1, a1, 255 |
| ; RV64I-NEXT: sub a1, a0, a1 |
| ; RV64I-NEXT: sltu a2, a0, a1 |
| ; RV64I-NEXT: mv a0, zero |
| ; RV64I-NEXT: bnez a2, .LBB3_2 |
| ; RV64I-NEXT: # %bb.1: |
| ; RV64I-NEXT: mv a0, a1 |
| ; RV64I-NEXT: .LBB3_2: |
| ; RV64I-NEXT: ret |
| ; |
| ; RV32IZbb-LABEL: func8: |
| ; RV32IZbb: # %bb.0: |
| ; RV32IZbb-NEXT: andi a0, a0, 255 |
| ; RV32IZbb-NEXT: mul a1, a1, a2 |
| ; RV32IZbb-NEXT: andi a1, a1, 255 |
| ; RV32IZbb-NEXT: maxu a0, a0, a1 |
| ; RV32IZbb-NEXT: sub a0, a0, a1 |
| ; RV32IZbb-NEXT: ret |
| ; |
| ; RV64IZbb-LABEL: func8: |
| ; RV64IZbb: # %bb.0: |
| ; RV64IZbb-NEXT: andi a0, a0, 255 |
| ; RV64IZbb-NEXT: mul a1, a1, a2 |
| ; RV64IZbb-NEXT: andi a1, a1, 255 |
| ; RV64IZbb-NEXT: maxu a0, a0, a1 |
| ; RV64IZbb-NEXT: sub a0, a0, a1 |
| ; RV64IZbb-NEXT: ret |
| %a = mul i8 %y, %z |
| %tmp = call i8 @llvm.usub.sat.i8(i8 %x, i8 %a) |
| ret i8 %tmp |
| } |
| |
| define i4 @func4(i4 %x, i4 %y, i4 %z) nounwind { |
| ; RV32I-LABEL: func4: |
| ; RV32I: # %bb.0: |
| ; RV32I-NEXT: andi a0, a0, 15 |
| ; RV32I-NEXT: mul a1, a1, a2 |
| ; RV32I-NEXT: andi a1, a1, 15 |
| ; RV32I-NEXT: sub a1, a0, a1 |
| ; RV32I-NEXT: sltu a2, a0, a1 |
| ; RV32I-NEXT: mv a0, zero |
| ; RV32I-NEXT: bnez a2, .LBB4_2 |
| ; RV32I-NEXT: # %bb.1: |
| ; RV32I-NEXT: mv a0, a1 |
| ; RV32I-NEXT: .LBB4_2: |
| ; RV32I-NEXT: ret |
| ; |
| ; RV64I-LABEL: func4: |
| ; RV64I: # %bb.0: |
| ; RV64I-NEXT: andi a0, a0, 15 |
| ; RV64I-NEXT: mul a1, a1, a2 |
| ; RV64I-NEXT: andi a1, a1, 15 |
| ; RV64I-NEXT: sub a1, a0, a1 |
| ; RV64I-NEXT: sltu a2, a0, a1 |
| ; RV64I-NEXT: mv a0, zero |
| ; RV64I-NEXT: bnez a2, .LBB4_2 |
| ; RV64I-NEXT: # %bb.1: |
| ; RV64I-NEXT: mv a0, a1 |
| ; RV64I-NEXT: .LBB4_2: |
| ; RV64I-NEXT: ret |
| ; |
| ; RV32IZbb-LABEL: func4: |
| ; RV32IZbb: # %bb.0: |
| ; RV32IZbb-NEXT: andi a0, a0, 15 |
| ; RV32IZbb-NEXT: mul a1, a1, a2 |
| ; RV32IZbb-NEXT: andi a1, a1, 15 |
| ; RV32IZbb-NEXT: maxu a0, a0, a1 |
| ; RV32IZbb-NEXT: sub a0, a0, a1 |
| ; RV32IZbb-NEXT: ret |
| ; |
| ; RV64IZbb-LABEL: func4: |
| ; RV64IZbb: # %bb.0: |
| ; RV64IZbb-NEXT: andi a0, a0, 15 |
| ; RV64IZbb-NEXT: mul a1, a1, a2 |
| ; RV64IZbb-NEXT: andi a1, a1, 15 |
| ; RV64IZbb-NEXT: maxu a0, a0, a1 |
| ; RV64IZbb-NEXT: sub a0, a0, a1 |
| ; RV64IZbb-NEXT: ret |
| %a = mul i4 %y, %z |
| %tmp = call i4 @llvm.usub.sat.i4(i4 %x, i4 %a) |
| ret i4 %tmp |
| } |
