| ; 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.ssub.sat.i4(i4, i4) |
| declare i8 @llvm.ssub.sat.i8(i8, i8) |
| declare i16 @llvm.ssub.sat.i16(i16, i16) |
| declare i32 @llvm.ssub.sat.i32(i32, i32) |
| declare i64 @llvm.ssub.sat.i64(i64, i64) |
| |
| define signext i32 @func(i32 signext %x, i32 signext %y) nounwind { |
| ; RV32I-LABEL: func: |
| ; RV32I: # %bb.0: |
| ; RV32I-NEXT: sgtz a2, a1 |
| ; RV32I-NEXT: sub a1, a0, a1 |
| ; RV32I-NEXT: slt a0, a1, a0 |
| ; RV32I-NEXT: xor a2, a2, a0 |
| ; RV32I-NEXT: lui a0, 524288 |
| ; RV32I-NEXT: bltz a1, .LBB0_3 |
| ; RV32I-NEXT: # %bb.1: |
| ; RV32I-NEXT: beqz a2, .LBB0_4 |
| ; RV32I-NEXT: .LBB0_2: |
| ; RV32I-NEXT: ret |
| ; RV32I-NEXT: .LBB0_3: |
| ; RV32I-NEXT: addi a0, a0, -1 |
| ; RV32I-NEXT: bnez a2, .LBB0_2 |
| ; RV32I-NEXT: .LBB0_4: |
| ; RV32I-NEXT: mv a0, a1 |
| ; RV32I-NEXT: ret |
| ; |
| ; RV64I-LABEL: func: |
| ; RV64I: # %bb.0: |
| ; RV64I-NEXT: sub a0, a0, a1 |
| ; RV64I-NEXT: lui a1, 524288 |
| ; RV64I-NEXT: addiw a2, a1, -1 |
| ; RV64I-NEXT: bge a0, a2, .LBB0_3 |
| ; RV64I-NEXT: # %bb.1: |
| ; RV64I-NEXT: bge a1, a0, .LBB0_4 |
| ; RV64I-NEXT: .LBB0_2: |
| ; RV64I-NEXT: ret |
| ; RV64I-NEXT: .LBB0_3: |
| ; RV64I-NEXT: mv a0, a2 |
| ; RV64I-NEXT: blt a1, a0, .LBB0_2 |
| ; RV64I-NEXT: .LBB0_4: |
| ; RV64I-NEXT: lui a0, 524288 |
| ; RV64I-NEXT: ret |
| ; |
| ; RV32IZbb-LABEL: func: |
| ; RV32IZbb: # %bb.0: |
| ; RV32IZbb-NEXT: sgtz a2, a1 |
| ; RV32IZbb-NEXT: sub a1, a0, a1 |
| ; RV32IZbb-NEXT: slt a0, a1, a0 |
| ; RV32IZbb-NEXT: xor a2, a2, a0 |
| ; RV32IZbb-NEXT: lui a0, 524288 |
| ; RV32IZbb-NEXT: bltz a1, .LBB0_3 |
| ; RV32IZbb-NEXT: # %bb.1: |
| ; RV32IZbb-NEXT: beqz a2, .LBB0_4 |
| ; RV32IZbb-NEXT: .LBB0_2: |
| ; RV32IZbb-NEXT: ret |
| ; RV32IZbb-NEXT: .LBB0_3: |
| ; RV32IZbb-NEXT: addi a0, a0, -1 |
| ; RV32IZbb-NEXT: bnez a2, .LBB0_2 |
| ; RV32IZbb-NEXT: .LBB0_4: |
| ; RV32IZbb-NEXT: mv a0, a1 |
| ; RV32IZbb-NEXT: ret |
| ; |
| ; RV64IZbb-LABEL: func: |
| ; RV64IZbb: # %bb.0: |
| ; RV64IZbb-NEXT: sub a0, a0, a1 |
| ; RV64IZbb-NEXT: lui a1, 524288 |
| ; RV64IZbb-NEXT: addiw a2, a1, -1 |
| ; RV64IZbb-NEXT: min a0, a0, a2 |
| ; RV64IZbb-NEXT: max a0, a0, a1 |
| ; RV64IZbb-NEXT: ret |
| %tmp = call i32 @llvm.ssub.sat.i32(i32 %x, i32 %y); |
| ret i32 %tmp; |
| } |
| |
| define i64 @func2(i64 %x, i64 %y) nounwind { |
| ; RV32I-LABEL: func2: |
| ; RV32I: # %bb.0: |
| ; RV32I-NEXT: sltu a4, a0, a2 |
| ; RV32I-NEXT: sub a5, a1, a3 |
| ; RV32I-NEXT: sub t0, a5, a4 |
| ; RV32I-NEXT: addi a6, zero, -1 |
| ; RV32I-NEXT: addi a7, zero, 1 |
| ; RV32I-NEXT: addi a4, zero, 1 |
| ; RV32I-NEXT: beqz t0, .LBB1_2 |
| ; RV32I-NEXT: # %bb.1: |
| ; RV32I-NEXT: slt a4, a6, t0 |
| ; RV32I-NEXT: .LBB1_2: |
| ; RV32I-NEXT: addi a5, zero, 1 |
| ; RV32I-NEXT: beqz a1, .LBB1_4 |
| ; RV32I-NEXT: # %bb.3: |
| ; RV32I-NEXT: slt a5, a6, a1 |
| ; RV32I-NEXT: .LBB1_4: |
| ; RV32I-NEXT: xor a1, a5, a4 |
| ; RV32I-NEXT: snez a1, a1 |
| ; RV32I-NEXT: beqz a3, .LBB1_6 |
| ; RV32I-NEXT: # %bb.5: |
| ; RV32I-NEXT: slt a7, a6, a3 |
| ; RV32I-NEXT: .LBB1_6: |
| ; RV32I-NEXT: xor a3, a5, a7 |
| ; RV32I-NEXT: snez a3, a3 |
| ; RV32I-NEXT: and a3, a3, a1 |
| ; RV32I-NEXT: bnez a3, .LBB1_8 |
| ; RV32I-NEXT: # %bb.7: |
| ; RV32I-NEXT: sub a0, a0, a2 |
| ; RV32I-NEXT: lui a1, 524288 |
| ; RV32I-NEXT: bltz t0, .LBB1_9 |
| ; RV32I-NEXT: j .LBB1_10 |
| ; RV32I-NEXT: .LBB1_8: |
| ; RV32I-NEXT: srai a0, t0, 31 |
| ; RV32I-NEXT: lui a1, 524288 |
| ; RV32I-NEXT: bgez t0, .LBB1_10 |
| ; RV32I-NEXT: .LBB1_9: |
| ; RV32I-NEXT: addi a1, a1, -1 |
| ; RV32I-NEXT: .LBB1_10: |
| ; RV32I-NEXT: beqz a3, .LBB1_12 |
| ; RV32I-NEXT: # %bb.11: |
| ; RV32I-NEXT: ret |
| ; RV32I-NEXT: .LBB1_12: |
| ; RV32I-NEXT: mv a1, t0 |
| ; RV32I-NEXT: ret |
| ; |
| ; RV64I-LABEL: func2: |
| ; RV64I: # %bb.0: |
| ; RV64I-NEXT: sgtz a2, a1 |
| ; RV64I-NEXT: sub a1, a0, a1 |
| ; RV64I-NEXT: slt a0, a1, a0 |
| ; RV64I-NEXT: xor a2, a2, a0 |
| ; RV64I-NEXT: addi a0, zero, -1 |
| ; RV64I-NEXT: slli a0, a0, 63 |
| ; RV64I-NEXT: bltz a1, .LBB1_3 |
| ; RV64I-NEXT: # %bb.1: |
| ; RV64I-NEXT: beqz a2, .LBB1_4 |
| ; RV64I-NEXT: .LBB1_2: |
| ; RV64I-NEXT: ret |
| ; RV64I-NEXT: .LBB1_3: |
| ; RV64I-NEXT: addi a0, a0, -1 |
| ; RV64I-NEXT: bnez a2, .LBB1_2 |
| ; RV64I-NEXT: .LBB1_4: |
| ; RV64I-NEXT: mv a0, a1 |
| ; RV64I-NEXT: ret |
| ; |
| ; RV32IZbb-LABEL: func2: |
| ; RV32IZbb: # %bb.0: |
| ; RV32IZbb-NEXT: sltu a4, a0, a2 |
| ; RV32IZbb-NEXT: sub a5, a1, a3 |
| ; RV32IZbb-NEXT: sub t0, a5, a4 |
| ; RV32IZbb-NEXT: addi a6, zero, -1 |
| ; RV32IZbb-NEXT: addi a7, zero, 1 |
| ; RV32IZbb-NEXT: addi a4, zero, 1 |
| ; RV32IZbb-NEXT: beqz t0, .LBB1_2 |
| ; RV32IZbb-NEXT: # %bb.1: |
| ; RV32IZbb-NEXT: slt a4, a6, t0 |
| ; RV32IZbb-NEXT: .LBB1_2: |
| ; RV32IZbb-NEXT: addi a5, zero, 1 |
| ; RV32IZbb-NEXT: beqz a1, .LBB1_4 |
| ; RV32IZbb-NEXT: # %bb.3: |
| ; RV32IZbb-NEXT: slt a5, a6, a1 |
| ; RV32IZbb-NEXT: .LBB1_4: |
| ; RV32IZbb-NEXT: xor a1, a5, a4 |
| ; RV32IZbb-NEXT: snez a1, a1 |
| ; RV32IZbb-NEXT: beqz a3, .LBB1_6 |
| ; RV32IZbb-NEXT: # %bb.5: |
| ; RV32IZbb-NEXT: slt a7, a6, a3 |
| ; RV32IZbb-NEXT: .LBB1_6: |
| ; RV32IZbb-NEXT: xor a3, a5, a7 |
| ; RV32IZbb-NEXT: snez a3, a3 |
| ; RV32IZbb-NEXT: and a3, a3, a1 |
| ; RV32IZbb-NEXT: bnez a3, .LBB1_8 |
| ; RV32IZbb-NEXT: # %bb.7: |
| ; RV32IZbb-NEXT: sub a0, a0, a2 |
| ; RV32IZbb-NEXT: lui a1, 524288 |
| ; RV32IZbb-NEXT: bltz t0, .LBB1_9 |
| ; RV32IZbb-NEXT: j .LBB1_10 |
| ; RV32IZbb-NEXT: .LBB1_8: |
| ; RV32IZbb-NEXT: srai a0, t0, 31 |
| ; RV32IZbb-NEXT: lui a1, 524288 |
| ; RV32IZbb-NEXT: bgez t0, .LBB1_10 |
| ; RV32IZbb-NEXT: .LBB1_9: |
| ; RV32IZbb-NEXT: addi a1, a1, -1 |
| ; RV32IZbb-NEXT: .LBB1_10: |
| ; RV32IZbb-NEXT: beqz a3, .LBB1_12 |
| ; RV32IZbb-NEXT: # %bb.11: |
| ; RV32IZbb-NEXT: ret |
| ; RV32IZbb-NEXT: .LBB1_12: |
| ; RV32IZbb-NEXT: mv a1, t0 |
| ; RV32IZbb-NEXT: ret |
| ; |
| ; RV64IZbb-LABEL: func2: |
| ; RV64IZbb: # %bb.0: |
| ; RV64IZbb-NEXT: sgtz a2, a1 |
| ; RV64IZbb-NEXT: sub a1, a0, a1 |
| ; RV64IZbb-NEXT: slt a0, a1, a0 |
| ; RV64IZbb-NEXT: xor a2, a2, a0 |
| ; RV64IZbb-NEXT: addi a0, zero, -1 |
| ; RV64IZbb-NEXT: slli a0, a0, 63 |
| ; RV64IZbb-NEXT: bltz a1, .LBB1_3 |
| ; RV64IZbb-NEXT: # %bb.1: |
| ; RV64IZbb-NEXT: beqz a2, .LBB1_4 |
| ; RV64IZbb-NEXT: .LBB1_2: |
| ; RV64IZbb-NEXT: ret |
| ; RV64IZbb-NEXT: .LBB1_3: |
| ; RV64IZbb-NEXT: addi a0, a0, -1 |
| ; RV64IZbb-NEXT: bnez a2, .LBB1_2 |
| ; RV64IZbb-NEXT: .LBB1_4: |
| ; RV64IZbb-NEXT: mv a0, a1 |
| ; RV64IZbb-NEXT: ret |
| %tmp = call i64 @llvm.ssub.sat.i64(i64 %x, i64 %y); |
| ret i64 %tmp; |
| } |
| |
| define signext i16 @func16(i16 signext %x, i16 signext %y) nounwind { |
| ; RV32I-LABEL: func16: |
| ; RV32I: # %bb.0: |
| ; RV32I-NEXT: sub a0, a0, a1 |
| ; RV32I-NEXT: lui a1, 8 |
| ; RV32I-NEXT: addi a1, a1, -1 |
| ; RV32I-NEXT: bge a0, a1, .LBB2_3 |
| ; RV32I-NEXT: # %bb.1: |
| ; RV32I-NEXT: lui a1, 1048568 |
| ; RV32I-NEXT: bge a1, a0, .LBB2_4 |
| ; RV32I-NEXT: .LBB2_2: |
| ; RV32I-NEXT: ret |
| ; RV32I-NEXT: .LBB2_3: |
| ; RV32I-NEXT: mv a0, a1 |
| ; RV32I-NEXT: lui a1, 1048568 |
| ; RV32I-NEXT: blt a1, a0, .LBB2_2 |
| ; RV32I-NEXT: .LBB2_4: |
| ; RV32I-NEXT: lui a0, 1048568 |
| ; RV32I-NEXT: ret |
| ; |
| ; RV64I-LABEL: func16: |
| ; RV64I: # %bb.0: |
| ; RV64I-NEXT: sub a0, a0, a1 |
| ; RV64I-NEXT: lui a1, 8 |
| ; RV64I-NEXT: addiw a1, a1, -1 |
| ; RV64I-NEXT: bge a0, a1, .LBB2_3 |
| ; RV64I-NEXT: # %bb.1: |
| ; RV64I-NEXT: lui a1, 1048568 |
| ; RV64I-NEXT: bge a1, a0, .LBB2_4 |
| ; RV64I-NEXT: .LBB2_2: |
| ; RV64I-NEXT: ret |
| ; RV64I-NEXT: .LBB2_3: |
| ; RV64I-NEXT: mv a0, a1 |
| ; RV64I-NEXT: lui a1, 1048568 |
| ; RV64I-NEXT: blt a1, a0, .LBB2_2 |
| ; RV64I-NEXT: .LBB2_4: |
| ; RV64I-NEXT: lui a0, 1048568 |
| ; RV64I-NEXT: ret |
| ; |
| ; RV32IZbb-LABEL: func16: |
| ; RV32IZbb: # %bb.0: |
| ; RV32IZbb-NEXT: sub a0, a0, a1 |
| ; RV32IZbb-NEXT: lui a1, 8 |
| ; RV32IZbb-NEXT: addi a1, a1, -1 |
| ; RV32IZbb-NEXT: min a0, a0, a1 |
| ; RV32IZbb-NEXT: lui a1, 1048568 |
| ; RV32IZbb-NEXT: max a0, a0, a1 |
| ; RV32IZbb-NEXT: ret |
| ; |
| ; RV64IZbb-LABEL: func16: |
| ; RV64IZbb: # %bb.0: |
| ; RV64IZbb-NEXT: sub a0, a0, a1 |
| ; RV64IZbb-NEXT: lui a1, 8 |
| ; RV64IZbb-NEXT: addiw a1, a1, -1 |
| ; RV64IZbb-NEXT: min a0, a0, a1 |
| ; RV64IZbb-NEXT: lui a1, 1048568 |
| ; RV64IZbb-NEXT: max a0, a0, a1 |
| ; RV64IZbb-NEXT: ret |
| %tmp = call i16 @llvm.ssub.sat.i16(i16 %x, i16 %y); |
| ret i16 %tmp; |
| } |
| |
| define signext i8 @func8(i8 signext %x, i8 signext %y) nounwind { |
| ; RV32I-LABEL: func8: |
| ; RV32I: # %bb.0: |
| ; RV32I-NEXT: sub a0, a0, a1 |
| ; RV32I-NEXT: addi a1, zero, 127 |
| ; RV32I-NEXT: bge a0, a1, .LBB3_3 |
| ; RV32I-NEXT: # %bb.1: |
| ; RV32I-NEXT: addi a1, zero, -128 |
| ; RV32I-NEXT: bge a1, a0, .LBB3_4 |
| ; RV32I-NEXT: .LBB3_2: |
| ; RV32I-NEXT: ret |
| ; RV32I-NEXT: .LBB3_3: |
| ; RV32I-NEXT: addi a0, zero, 127 |
| ; RV32I-NEXT: addi a1, zero, -128 |
| ; RV32I-NEXT: blt a1, a0, .LBB3_2 |
| ; RV32I-NEXT: .LBB3_4: |
| ; RV32I-NEXT: addi a0, zero, -128 |
| ; RV32I-NEXT: ret |
| ; |
| ; RV64I-LABEL: func8: |
| ; RV64I: # %bb.0: |
| ; RV64I-NEXT: sub a0, a0, a1 |
| ; RV64I-NEXT: addi a1, zero, 127 |
| ; RV64I-NEXT: bge a0, a1, .LBB3_3 |
| ; RV64I-NEXT: # %bb.1: |
| ; RV64I-NEXT: addi a1, zero, -128 |
| ; RV64I-NEXT: bge a1, a0, .LBB3_4 |
| ; RV64I-NEXT: .LBB3_2: |
| ; RV64I-NEXT: ret |
| ; RV64I-NEXT: .LBB3_3: |
| ; RV64I-NEXT: addi a0, zero, 127 |
| ; RV64I-NEXT: addi a1, zero, -128 |
| ; RV64I-NEXT: blt a1, a0, .LBB3_2 |
| ; RV64I-NEXT: .LBB3_4: |
| ; RV64I-NEXT: addi a0, zero, -128 |
| ; RV64I-NEXT: ret |
| ; |
| ; RV32IZbb-LABEL: func8: |
| ; RV32IZbb: # %bb.0: |
| ; RV32IZbb-NEXT: sub a0, a0, a1 |
| ; RV32IZbb-NEXT: addi a1, zero, 127 |
| ; RV32IZbb-NEXT: min a0, a0, a1 |
| ; RV32IZbb-NEXT: addi a1, zero, -128 |
| ; RV32IZbb-NEXT: max a0, a0, a1 |
| ; RV32IZbb-NEXT: ret |
| ; |
| ; RV64IZbb-LABEL: func8: |
| ; RV64IZbb: # %bb.0: |
| ; RV64IZbb-NEXT: sub a0, a0, a1 |
| ; RV64IZbb-NEXT: addi a1, zero, 127 |
| ; RV64IZbb-NEXT: min a0, a0, a1 |
| ; RV64IZbb-NEXT: addi a1, zero, -128 |
| ; RV64IZbb-NEXT: max a0, a0, a1 |
| ; RV64IZbb-NEXT: ret |
| %tmp = call i8 @llvm.ssub.sat.i8(i8 %x, i8 %y); |
| ret i8 %tmp; |
| } |
| |
| define signext i4 @func3(i4 signext %x, i4 signext %y) nounwind { |
| ; RV32I-LABEL: func3: |
| ; RV32I: # %bb.0: |
| ; RV32I-NEXT: sub a0, a0, a1 |
| ; RV32I-NEXT: addi a1, zero, 7 |
| ; RV32I-NEXT: bge a0, a1, .LBB4_3 |
| ; RV32I-NEXT: # %bb.1: |
| ; RV32I-NEXT: addi a1, zero, -8 |
| ; RV32I-NEXT: bge a1, a0, .LBB4_4 |
| ; RV32I-NEXT: .LBB4_2: |
| ; RV32I-NEXT: ret |
| ; RV32I-NEXT: .LBB4_3: |
| ; RV32I-NEXT: addi a0, zero, 7 |
| ; RV32I-NEXT: addi a1, zero, -8 |
| ; RV32I-NEXT: blt a1, a0, .LBB4_2 |
| ; RV32I-NEXT: .LBB4_4: |
| ; RV32I-NEXT: addi a0, zero, -8 |
| ; RV32I-NEXT: ret |
| ; |
| ; RV64I-LABEL: func3: |
| ; RV64I: # %bb.0: |
| ; RV64I-NEXT: sub a0, a0, a1 |
| ; RV64I-NEXT: addi a1, zero, 7 |
| ; RV64I-NEXT: bge a0, a1, .LBB4_3 |
| ; RV64I-NEXT: # %bb.1: |
| ; RV64I-NEXT: addi a1, zero, -8 |
| ; RV64I-NEXT: bge a1, a0, .LBB4_4 |
| ; RV64I-NEXT: .LBB4_2: |
| ; RV64I-NEXT: ret |
| ; RV64I-NEXT: .LBB4_3: |
| ; RV64I-NEXT: addi a0, zero, 7 |
| ; RV64I-NEXT: addi a1, zero, -8 |
| ; RV64I-NEXT: blt a1, a0, .LBB4_2 |
| ; RV64I-NEXT: .LBB4_4: |
| ; RV64I-NEXT: addi a0, zero, -8 |
| ; RV64I-NEXT: ret |
| ; |
| ; RV32IZbb-LABEL: func3: |
| ; RV32IZbb: # %bb.0: |
| ; RV32IZbb-NEXT: sub a0, a0, a1 |
| ; RV32IZbb-NEXT: addi a1, zero, 7 |
| ; RV32IZbb-NEXT: min a0, a0, a1 |
| ; RV32IZbb-NEXT: addi a1, zero, -8 |
| ; RV32IZbb-NEXT: max a0, a0, a1 |
| ; RV32IZbb-NEXT: ret |
| ; |
| ; RV64IZbb-LABEL: func3: |
| ; RV64IZbb: # %bb.0: |
| ; RV64IZbb-NEXT: sub a0, a0, a1 |
| ; RV64IZbb-NEXT: addi a1, zero, 7 |
| ; RV64IZbb-NEXT: min a0, a0, a1 |
| ; RV64IZbb-NEXT: addi a1, zero, -8 |
| ; RV64IZbb-NEXT: max a0, a0, a1 |
| ; RV64IZbb-NEXT: ret |
| %tmp = call i4 @llvm.ssub.sat.i4(i4 %x, i4 %y); |
| ret i4 %tmp; |
| } |
