| ; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py |
| ; RUN: llc -mtriple=riscv32 -verify-machineinstrs < %s \ |
| ; RUN: | FileCheck %s --check-prefix=RV32I |
| ; RUN: llc -mtriple=riscv32 -mattr=+zbb -verify-machineinstrs < %s \ |
| ; RUN: | FileCheck %s --check-prefix=RV32ZBB |
| ; RUN: llc -mtriple=riscv64 -verify-machineinstrs < %s \ |
| ; RUN: | FileCheck %s --check-prefix=RV64I |
| ; RUN: llc -mtriple=riscv64 -mattr=+zbb -verify-machineinstrs < %s \ |
| ; RUN: | FileCheck %s --check-prefix=RV64ZBB |
| |
| declare i32 @llvm.abs.i32(i32, i1 immarg) |
| declare i64 @llvm.abs.i64(i64, i1 immarg) |
| |
| define i32 @neg_abs32(i32 %x) { |
| ; RV32I-LABEL: neg_abs32: |
| ; RV32I: # %bb.0: |
| ; RV32I-NEXT: srai a1, a0, 31 |
| ; RV32I-NEXT: xor a0, a0, a1 |
| ; RV32I-NEXT: sub a0, a1, a0 |
| ; RV32I-NEXT: ret |
| ; |
| ; RV32ZBB-LABEL: neg_abs32: |
| ; RV32ZBB: # %bb.0: |
| ; RV32ZBB-NEXT: neg a1, a0 |
| ; RV32ZBB-NEXT: min a0, a0, a1 |
| ; RV32ZBB-NEXT: ret |
| ; |
| ; RV64I-LABEL: neg_abs32: |
| ; RV64I: # %bb.0: |
| ; RV64I-NEXT: sraiw a1, a0, 31 |
| ; RV64I-NEXT: xor a0, a0, a1 |
| ; RV64I-NEXT: subw a0, a1, a0 |
| ; RV64I-NEXT: ret |
| ; |
| ; RV64ZBB-LABEL: neg_abs32: |
| ; RV64ZBB: # %bb.0: |
| ; RV64ZBB-NEXT: sraiw a1, a0, 31 |
| ; RV64ZBB-NEXT: xor a0, a0, a1 |
| ; RV64ZBB-NEXT: subw a0, a1, a0 |
| ; RV64ZBB-NEXT: ret |
| %abs = tail call i32 @llvm.abs.i32(i32 %x, i1 true) |
| %neg = sub nsw i32 0, %abs |
| ret i32 %neg |
| } |
| |
| define i32 @select_neg_abs32(i32 %x) { |
| ; RV32I-LABEL: select_neg_abs32: |
| ; RV32I: # %bb.0: |
| ; RV32I-NEXT: srai a1, a0, 31 |
| ; RV32I-NEXT: xor a0, a0, a1 |
| ; RV32I-NEXT: sub a0, a1, a0 |
| ; RV32I-NEXT: ret |
| ; |
| ; RV32ZBB-LABEL: select_neg_abs32: |
| ; RV32ZBB: # %bb.0: |
| ; RV32ZBB-NEXT: neg a1, a0 |
| ; RV32ZBB-NEXT: min a0, a0, a1 |
| ; RV32ZBB-NEXT: ret |
| ; |
| ; RV64I-LABEL: select_neg_abs32: |
| ; RV64I: # %bb.0: |
| ; RV64I-NEXT: sraiw a1, a0, 31 |
| ; RV64I-NEXT: xor a0, a0, a1 |
| ; RV64I-NEXT: subw a0, a1, a0 |
| ; RV64I-NEXT: ret |
| ; |
| ; RV64ZBB-LABEL: select_neg_abs32: |
| ; RV64ZBB: # %bb.0: |
| ; RV64ZBB-NEXT: sraiw a1, a0, 31 |
| ; RV64ZBB-NEXT: xor a0, a0, a1 |
| ; RV64ZBB-NEXT: subw a0, a1, a0 |
| ; RV64ZBB-NEXT: ret |
| %1 = icmp slt i32 %x, 0 |
| %2 = sub nsw i32 0, %x |
| %3 = select i1 %1, i32 %x, i32 %2 |
| ret i32 %3 |
| } |
| |
| define i64 @neg_abs64(i64 %x) { |
| ; RV32I-LABEL: neg_abs64: |
| ; RV32I: # %bb.0: |
| ; RV32I-NEXT: srai a2, a1, 31 |
| ; RV32I-NEXT: xor a0, a0, a2 |
| ; RV32I-NEXT: sltu a3, a2, a0 |
| ; RV32I-NEXT: xor a1, a1, a2 |
| ; RV32I-NEXT: sub a1, a2, a1 |
| ; RV32I-NEXT: sub a1, a1, a3 |
| ; RV32I-NEXT: sub a0, a2, a0 |
| ; RV32I-NEXT: ret |
| ; |
| ; RV32ZBB-LABEL: neg_abs64: |
| ; RV32ZBB: # %bb.0: |
| ; RV32ZBB-NEXT: srai a2, a1, 31 |
| ; RV32ZBB-NEXT: xor a0, a0, a2 |
| ; RV32ZBB-NEXT: sltu a3, a2, a0 |
| ; RV32ZBB-NEXT: xor a1, a1, a2 |
| ; RV32ZBB-NEXT: sub a1, a2, a1 |
| ; RV32ZBB-NEXT: sub a1, a1, a3 |
| ; RV32ZBB-NEXT: sub a0, a2, a0 |
| ; RV32ZBB-NEXT: ret |
| ; |
| ; RV64I-LABEL: neg_abs64: |
| ; RV64I: # %bb.0: |
| ; RV64I-NEXT: srai a1, a0, 63 |
| ; RV64I-NEXT: xor a0, a0, a1 |
| ; RV64I-NEXT: sub a0, a1, a0 |
| ; RV64I-NEXT: ret |
| ; |
| ; RV64ZBB-LABEL: neg_abs64: |
| ; RV64ZBB: # %bb.0: |
| ; RV64ZBB-NEXT: neg a1, a0 |
| ; RV64ZBB-NEXT: min a0, a0, a1 |
| ; RV64ZBB-NEXT: ret |
| %abs = tail call i64 @llvm.abs.i64(i64 %x, i1 true) |
| %neg = sub nsw i64 0, %abs |
| ret i64 %neg |
| } |
| |
| define i64 @select_neg_abs64(i64 %x) { |
| ; RV32I-LABEL: select_neg_abs64: |
| ; RV32I: # %bb.0: |
| ; RV32I-NEXT: srai a2, a1, 31 |
| ; RV32I-NEXT: xor a0, a0, a2 |
| ; RV32I-NEXT: sltu a3, a2, a0 |
| ; RV32I-NEXT: xor a1, a1, a2 |
| ; RV32I-NEXT: sub a1, a2, a1 |
| ; RV32I-NEXT: sub a1, a1, a3 |
| ; RV32I-NEXT: sub a0, a2, a0 |
| ; RV32I-NEXT: ret |
| ; |
| ; RV32ZBB-LABEL: select_neg_abs64: |
| ; RV32ZBB: # %bb.0: |
| ; RV32ZBB-NEXT: srai a2, a1, 31 |
| ; RV32ZBB-NEXT: xor a0, a0, a2 |
| ; RV32ZBB-NEXT: sltu a3, a2, a0 |
| ; RV32ZBB-NEXT: xor a1, a1, a2 |
| ; RV32ZBB-NEXT: sub a1, a2, a1 |
| ; RV32ZBB-NEXT: sub a1, a1, a3 |
| ; RV32ZBB-NEXT: sub a0, a2, a0 |
| ; RV32ZBB-NEXT: ret |
| ; |
| ; RV64I-LABEL: select_neg_abs64: |
| ; RV64I: # %bb.0: |
| ; RV64I-NEXT: srai a1, a0, 63 |
| ; RV64I-NEXT: xor a0, a0, a1 |
| ; RV64I-NEXT: sub a0, a1, a0 |
| ; RV64I-NEXT: ret |
| ; |
| ; RV64ZBB-LABEL: select_neg_abs64: |
| ; RV64ZBB: # %bb.0: |
| ; RV64ZBB-NEXT: neg a1, a0 |
| ; RV64ZBB-NEXT: min a0, a0, a1 |
| ; RV64ZBB-NEXT: ret |
| %1 = icmp slt i64 %x, 0 |
| %2 = sub nsw i64 0, %x |
| %3 = select i1 %1, i64 %x, i64 %2 |
| ret i64 %3 |
| } |
| |
| define i32 @neg_abs32_multiuse(i32 %x, ptr %y) { |
| ; RV32I-LABEL: neg_abs32_multiuse: |
| ; RV32I: # %bb.0: |
| ; RV32I-NEXT: srai a2, a0, 31 |
| ; RV32I-NEXT: xor a0, a0, a2 |
| ; RV32I-NEXT: sub a2, a0, a2 |
| ; RV32I-NEXT: neg a0, a2 |
| ; RV32I-NEXT: sw a2, 0(a1) |
| ; RV32I-NEXT: ret |
| ; |
| ; RV32ZBB-LABEL: neg_abs32_multiuse: |
| ; RV32ZBB: # %bb.0: |
| ; RV32ZBB-NEXT: neg a2, a0 |
| ; RV32ZBB-NEXT: max a2, a0, a2 |
| ; RV32ZBB-NEXT: neg a0, a2 |
| ; RV32ZBB-NEXT: sw a2, 0(a1) |
| ; RV32ZBB-NEXT: ret |
| ; |
| ; RV64I-LABEL: neg_abs32_multiuse: |
| ; RV64I: # %bb.0: |
| ; RV64I-NEXT: sraiw a2, a0, 31 |
| ; RV64I-NEXT: xor a0, a0, a2 |
| ; RV64I-NEXT: subw a2, a0, a2 |
| ; RV64I-NEXT: negw a0, a2 |
| ; RV64I-NEXT: sw a2, 0(a1) |
| ; RV64I-NEXT: ret |
| ; |
| ; RV64ZBB-LABEL: neg_abs32_multiuse: |
| ; RV64ZBB: # %bb.0: |
| ; RV64ZBB-NEXT: sext.w a0, a0 |
| ; RV64ZBB-NEXT: negw a2, a0 |
| ; RV64ZBB-NEXT: max a2, a0, a2 |
| ; RV64ZBB-NEXT: negw a0, a2 |
| ; RV64ZBB-NEXT: sw a2, 0(a1) |
| ; RV64ZBB-NEXT: ret |
| %abs = tail call i32 @llvm.abs.i32(i32 %x, i1 true) |
| store i32 %abs, ptr %y |
| %neg = sub nsw i32 0, %abs |
| ret i32 %neg |
| } |
| |
| define i64 @neg_abs64_multiuse(i64 %x, ptr %y) { |
| ; RV32I-LABEL: neg_abs64_multiuse: |
| ; RV32I: # %bb.0: |
| ; RV32I-NEXT: bgez a1, .LBB5_2 |
| ; RV32I-NEXT: # %bb.1: |
| ; RV32I-NEXT: snez a3, a0 |
| ; RV32I-NEXT: neg a1, a1 |
| ; RV32I-NEXT: sub a1, a1, a3 |
| ; RV32I-NEXT: neg a0, a0 |
| ; RV32I-NEXT: .LBB5_2: |
| ; RV32I-NEXT: sw a0, 0(a2) |
| ; RV32I-NEXT: snez a3, a0 |
| ; RV32I-NEXT: neg a4, a1 |
| ; RV32I-NEXT: sub a3, a4, a3 |
| ; RV32I-NEXT: neg a0, a0 |
| ; RV32I-NEXT: sw a1, 4(a2) |
| ; RV32I-NEXT: mv a1, a3 |
| ; RV32I-NEXT: ret |
| ; |
| ; RV32ZBB-LABEL: neg_abs64_multiuse: |
| ; RV32ZBB: # %bb.0: |
| ; RV32ZBB-NEXT: bgez a1, .LBB5_2 |
| ; RV32ZBB-NEXT: # %bb.1: |
| ; RV32ZBB-NEXT: snez a3, a0 |
| ; RV32ZBB-NEXT: neg a1, a1 |
| ; RV32ZBB-NEXT: sub a1, a1, a3 |
| ; RV32ZBB-NEXT: neg a0, a0 |
| ; RV32ZBB-NEXT: .LBB5_2: |
| ; RV32ZBB-NEXT: sw a0, 0(a2) |
| ; RV32ZBB-NEXT: snez a3, a0 |
| ; RV32ZBB-NEXT: neg a4, a1 |
| ; RV32ZBB-NEXT: sub a3, a4, a3 |
| ; RV32ZBB-NEXT: neg a0, a0 |
| ; RV32ZBB-NEXT: sw a1, 4(a2) |
| ; RV32ZBB-NEXT: mv a1, a3 |
| ; RV32ZBB-NEXT: ret |
| ; |
| ; RV64I-LABEL: neg_abs64_multiuse: |
| ; RV64I: # %bb.0: |
| ; RV64I-NEXT: srai a2, a0, 63 |
| ; RV64I-NEXT: xor a0, a0, a2 |
| ; RV64I-NEXT: sub a2, a0, a2 |
| ; RV64I-NEXT: neg a0, a2 |
| ; RV64I-NEXT: sd a2, 0(a1) |
| ; RV64I-NEXT: ret |
| ; |
| ; RV64ZBB-LABEL: neg_abs64_multiuse: |
| ; RV64ZBB: # %bb.0: |
| ; RV64ZBB-NEXT: neg a2, a0 |
| ; RV64ZBB-NEXT: max a2, a0, a2 |
| ; RV64ZBB-NEXT: neg a0, a2 |
| ; RV64ZBB-NEXT: sd a2, 0(a1) |
| ; RV64ZBB-NEXT: ret |
| %abs = tail call i64 @llvm.abs.i64(i64 %x, i1 true) |
| store i64 %abs, ptr %y |
| %neg = sub nsw i64 0, %abs |
| ret i64 %neg |
| } |
| |
