| ; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py |
| ; RUN: llc -mtriple=riscv32-unknown-linux-gnu < %s | FileCheck %s --check-prefixes=CHECK,RV32,RV32I |
| ; RUN: llc -mtriple=riscv64-unknown-linux-gnu < %s | FileCheck %s --check-prefixes=CHECK,RV64,RV64I |
| ; RUN: llc -mtriple=riscv32-unknown-linux-gnu -mattr=+zbb < %s | FileCheck %s --check-prefixes=CHECK,RV32,RV32ZBB |
| ; RUN: llc -mtriple=riscv64-unknown-linux-gnu -mattr=+zbb < %s | FileCheck %s --check-prefixes=CHECK,RV64,RV64ZBB |
| |
| ; https://bugs.llvm.org/show_bug.cgi?id=38149 |
| |
| ; We are truncating from wider width, and then sign-extending |
| ; back to the original width. Then we inequality-comparing orig and src. |
| ; If they don't match, then we had signed truncation during truncation. |
| |
| ; This can be expressed in a several ways in IR: |
| ; trunc + sext + icmp ne <- not canonical |
| ; shl + ashr + icmp ne |
| ; add + icmp ult/ule |
| ; add + icmp uge/ugt |
| ; However only the simplest form (with two shifts) gets lowered best. |
| |
| ; ---------------------------------------------------------------------------- ; |
| ; shl + ashr + icmp ne |
| ; ---------------------------------------------------------------------------- ; |
| |
| define i1 @shifts_necmp_i16_i8(i16 %x) nounwind { |
| ; RV32I-LABEL: shifts_necmp_i16_i8: |
| ; RV32I: # %bb.0: |
| ; RV32I-NEXT: lui a1, 16 |
| ; RV32I-NEXT: addi a1, a1, -1 |
| ; RV32I-NEXT: and a2, a0, a1 |
| ; RV32I-NEXT: slli a0, a0, 24 |
| ; RV32I-NEXT: srai a0, a0, 24 |
| ; RV32I-NEXT: and a0, a0, a1 |
| ; RV32I-NEXT: xor a0, a0, a2 |
| ; RV32I-NEXT: snez a0, a0 |
| ; RV32I-NEXT: ret |
| ; |
| ; RV64I-LABEL: shifts_necmp_i16_i8: |
| ; RV64I: # %bb.0: |
| ; RV64I-NEXT: lui a1, 16 |
| ; RV64I-NEXT: addiw a1, a1, -1 |
| ; RV64I-NEXT: and a2, a0, a1 |
| ; RV64I-NEXT: slli a0, a0, 56 |
| ; RV64I-NEXT: srai a0, a0, 56 |
| ; RV64I-NEXT: and a0, a0, a1 |
| ; RV64I-NEXT: xor a0, a0, a2 |
| ; RV64I-NEXT: snez a0, a0 |
| ; RV64I-NEXT: ret |
| ; |
| ; RV32ZBB-LABEL: shifts_necmp_i16_i8: |
| ; RV32ZBB: # %bb.0: |
| ; RV32ZBB-NEXT: zext.h a1, a0 |
| ; RV32ZBB-NEXT: sext.b a0, a0 |
| ; RV32ZBB-NEXT: zext.h a0, a0 |
| ; RV32ZBB-NEXT: xor a0, a0, a1 |
| ; RV32ZBB-NEXT: snez a0, a0 |
| ; RV32ZBB-NEXT: ret |
| ; |
| ; RV64ZBB-LABEL: shifts_necmp_i16_i8: |
| ; RV64ZBB: # %bb.0: |
| ; RV64ZBB-NEXT: zext.h a1, a0 |
| ; RV64ZBB-NEXT: sext.b a0, a0 |
| ; RV64ZBB-NEXT: zext.h a0, a0 |
| ; RV64ZBB-NEXT: xor a0, a0, a1 |
| ; RV64ZBB-NEXT: snez a0, a0 |
| ; RV64ZBB-NEXT: ret |
| %tmp0 = shl i16 %x, 8 ; 16-8 |
| %tmp1 = ashr exact i16 %tmp0, 8 ; 16-8 |
| %tmp2 = icmp ne i16 %tmp1, %x |
| ret i1 %tmp2 |
| } |
| |
| define i1 @shifts_necmp_i32_i16(i32 %x) nounwind { |
| ; RV32I-LABEL: shifts_necmp_i32_i16: |
| ; RV32I: # %bb.0: |
| ; RV32I-NEXT: slli a1, a0, 16 |
| ; RV32I-NEXT: srai a1, a1, 16 |
| ; RV32I-NEXT: xor a0, a1, a0 |
| ; RV32I-NEXT: snez a0, a0 |
| ; RV32I-NEXT: ret |
| ; |
| ; RV64I-LABEL: shifts_necmp_i32_i16: |
| ; RV64I: # %bb.0: |
| ; RV64I-NEXT: sext.w a1, a0 |
| ; RV64I-NEXT: slli a0, a0, 48 |
| ; RV64I-NEXT: srai a0, a0, 48 |
| ; RV64I-NEXT: xor a0, a0, a1 |
| ; RV64I-NEXT: snez a0, a0 |
| ; RV64I-NEXT: ret |
| ; |
| ; RV32ZBB-LABEL: shifts_necmp_i32_i16: |
| ; RV32ZBB: # %bb.0: |
| ; RV32ZBB-NEXT: sext.h a1, a0 |
| ; RV32ZBB-NEXT: xor a0, a1, a0 |
| ; RV32ZBB-NEXT: snez a0, a0 |
| ; RV32ZBB-NEXT: ret |
| ; |
| ; RV64ZBB-LABEL: shifts_necmp_i32_i16: |
| ; RV64ZBB: # %bb.0: |
| ; RV64ZBB-NEXT: sext.w a1, a0 |
| ; RV64ZBB-NEXT: sext.h a0, a0 |
| ; RV64ZBB-NEXT: xor a0, a0, a1 |
| ; RV64ZBB-NEXT: snez a0, a0 |
| ; RV64ZBB-NEXT: ret |
| %tmp0 = shl i32 %x, 16 ; 32-16 |
| %tmp1 = ashr exact i32 %tmp0, 16 ; 32-16 |
| %tmp2 = icmp ne i32 %tmp1, %x |
| ret i1 %tmp2 |
| } |
| |
| define i1 @shifts_necmp_i32_i8(i32 %x) nounwind { |
| ; RV32I-LABEL: shifts_necmp_i32_i8: |
| ; RV32I: # %bb.0: |
| ; RV32I-NEXT: slli a1, a0, 24 |
| ; RV32I-NEXT: srai a1, a1, 24 |
| ; RV32I-NEXT: xor a0, a1, a0 |
| ; RV32I-NEXT: snez a0, a0 |
| ; RV32I-NEXT: ret |
| ; |
| ; RV64I-LABEL: shifts_necmp_i32_i8: |
| ; RV64I: # %bb.0: |
| ; RV64I-NEXT: sext.w a1, a0 |
| ; RV64I-NEXT: slli a0, a0, 56 |
| ; RV64I-NEXT: srai a0, a0, 56 |
| ; RV64I-NEXT: xor a0, a0, a1 |
| ; RV64I-NEXT: snez a0, a0 |
| ; RV64I-NEXT: ret |
| ; |
| ; RV32ZBB-LABEL: shifts_necmp_i32_i8: |
| ; RV32ZBB: # %bb.0: |
| ; RV32ZBB-NEXT: sext.b a1, a0 |
| ; RV32ZBB-NEXT: xor a0, a1, a0 |
| ; RV32ZBB-NEXT: snez a0, a0 |
| ; RV32ZBB-NEXT: ret |
| ; |
| ; RV64ZBB-LABEL: shifts_necmp_i32_i8: |
| ; RV64ZBB: # %bb.0: |
| ; RV64ZBB-NEXT: sext.w a1, a0 |
| ; RV64ZBB-NEXT: sext.b a0, a0 |
| ; RV64ZBB-NEXT: xor a0, a0, a1 |
| ; RV64ZBB-NEXT: snez a0, a0 |
| ; RV64ZBB-NEXT: ret |
| %tmp0 = shl i32 %x, 24 ; 32-8 |
| %tmp1 = ashr exact i32 %tmp0, 24 ; 32-8 |
| %tmp2 = icmp ne i32 %tmp1, %x |
| ret i1 %tmp2 |
| } |
| |
| define i1 @shifts_necmp_i64_i32(i64 %x) nounwind { |
| ; RV32-LABEL: shifts_necmp_i64_i32: |
| ; RV32: # %bb.0: |
| ; RV32-NEXT: srai a0, a0, 31 |
| ; RV32-NEXT: xor a0, a0, a1 |
| ; RV32-NEXT: snez a0, a0 |
| ; RV32-NEXT: ret |
| ; |
| ; RV64-LABEL: shifts_necmp_i64_i32: |
| ; RV64: # %bb.0: |
| ; RV64-NEXT: sext.w a1, a0 |
| ; RV64-NEXT: xor a0, a1, a0 |
| ; RV64-NEXT: snez a0, a0 |
| ; RV64-NEXT: ret |
| %tmp0 = shl i64 %x, 32 ; 64-32 |
| %tmp1 = ashr exact i64 %tmp0, 32 ; 64-32 |
| %tmp2 = icmp ne i64 %tmp1, %x |
| ret i1 %tmp2 |
| } |
| |
| define i1 @shifts_necmp_i64_i16(i64 %x) nounwind { |
| ; RV32I-LABEL: shifts_necmp_i64_i16: |
| ; RV32I: # %bb.0: |
| ; RV32I-NEXT: slli a2, a0, 16 |
| ; RV32I-NEXT: srai a3, a2, 16 |
| ; RV32I-NEXT: srai a2, a2, 31 |
| ; RV32I-NEXT: xor a1, a2, a1 |
| ; RV32I-NEXT: xor a0, a3, a0 |
| ; RV32I-NEXT: or a0, a0, a1 |
| ; RV32I-NEXT: snez a0, a0 |
| ; RV32I-NEXT: ret |
| ; |
| ; RV64I-LABEL: shifts_necmp_i64_i16: |
| ; RV64I: # %bb.0: |
| ; RV64I-NEXT: slli a1, a0, 48 |
| ; RV64I-NEXT: srai a1, a1, 48 |
| ; RV64I-NEXT: xor a0, a1, a0 |
| ; RV64I-NEXT: snez a0, a0 |
| ; RV64I-NEXT: ret |
| ; |
| ; RV32ZBB-LABEL: shifts_necmp_i64_i16: |
| ; RV32ZBB: # %bb.0: |
| ; RV32ZBB-NEXT: sext.h a2, a0 |
| ; RV32ZBB-NEXT: srai a3, a2, 31 |
| ; RV32ZBB-NEXT: xor a0, a2, a0 |
| ; RV32ZBB-NEXT: xor a1, a3, a1 |
| ; RV32ZBB-NEXT: or a0, a0, a1 |
| ; RV32ZBB-NEXT: snez a0, a0 |
| ; RV32ZBB-NEXT: ret |
| ; |
| ; RV64ZBB-LABEL: shifts_necmp_i64_i16: |
| ; RV64ZBB: # %bb.0: |
| ; RV64ZBB-NEXT: sext.h a1, a0 |
| ; RV64ZBB-NEXT: xor a0, a1, a0 |
| ; RV64ZBB-NEXT: snez a0, a0 |
| ; RV64ZBB-NEXT: ret |
| %tmp0 = shl i64 %x, 48 ; 64-16 |
| %tmp1 = ashr exact i64 %tmp0, 48 ; 64-16 |
| %tmp2 = icmp ne i64 %tmp1, %x |
| ret i1 %tmp2 |
| } |
| |
| define i1 @shifts_necmp_i64_i8(i64 %x) nounwind { |
| ; RV32I-LABEL: shifts_necmp_i64_i8: |
| ; RV32I: # %bb.0: |
| ; RV32I-NEXT: slli a2, a0, 24 |
| ; RV32I-NEXT: srai a3, a2, 24 |
| ; RV32I-NEXT: srai a2, a2, 31 |
| ; RV32I-NEXT: xor a1, a2, a1 |
| ; RV32I-NEXT: xor a0, a3, a0 |
| ; RV32I-NEXT: or a0, a0, a1 |
| ; RV32I-NEXT: snez a0, a0 |
| ; RV32I-NEXT: ret |
| ; |
| ; RV64I-LABEL: shifts_necmp_i64_i8: |
| ; RV64I: # %bb.0: |
| ; RV64I-NEXT: slli a1, a0, 56 |
| ; RV64I-NEXT: srai a1, a1, 56 |
| ; RV64I-NEXT: xor a0, a1, a0 |
| ; RV64I-NEXT: snez a0, a0 |
| ; RV64I-NEXT: ret |
| ; |
| ; RV32ZBB-LABEL: shifts_necmp_i64_i8: |
| ; RV32ZBB: # %bb.0: |
| ; RV32ZBB-NEXT: sext.b a2, a0 |
| ; RV32ZBB-NEXT: srai a3, a2, 31 |
| ; RV32ZBB-NEXT: xor a0, a2, a0 |
| ; RV32ZBB-NEXT: xor a1, a3, a1 |
| ; RV32ZBB-NEXT: or a0, a0, a1 |
| ; RV32ZBB-NEXT: snez a0, a0 |
| ; RV32ZBB-NEXT: ret |
| ; |
| ; RV64ZBB-LABEL: shifts_necmp_i64_i8: |
| ; RV64ZBB: # %bb.0: |
| ; RV64ZBB-NEXT: sext.b a1, a0 |
| ; RV64ZBB-NEXT: xor a0, a1, a0 |
| ; RV64ZBB-NEXT: snez a0, a0 |
| ; RV64ZBB-NEXT: ret |
| %tmp0 = shl i64 %x, 56 ; 64-8 |
| %tmp1 = ashr exact i64 %tmp0, 56 ; 64-8 |
| %tmp2 = icmp ne i64 %tmp1, %x |
| ret i1 %tmp2 |
| } |
| |
| ; ---------------------------------------------------------------------------- ; |
| ; add + icmp ult |
| ; ---------------------------------------------------------------------------- ; |
| |
| define i1 @add_ultcmp_i16_i8(i16 %x) nounwind { |
| ; RV32I-LABEL: add_ultcmp_i16_i8: |
| ; RV32I: # %bb.0: |
| ; RV32I-NEXT: slli a0, a0, 16 |
| ; RV32I-NEXT: srli a0, a0, 16 |
| ; RV32I-NEXT: addi a0, a0, -128 |
| ; RV32I-NEXT: srli a0, a0, 8 |
| ; RV32I-NEXT: sltiu a0, a0, 255 |
| ; RV32I-NEXT: ret |
| ; |
| ; RV64I-LABEL: add_ultcmp_i16_i8: |
| ; RV64I: # %bb.0: |
| ; RV64I-NEXT: slli a0, a0, 48 |
| ; RV64I-NEXT: srli a0, a0, 48 |
| ; RV64I-NEXT: addi a0, a0, -128 |
| ; RV64I-NEXT: srli a0, a0, 8 |
| ; RV64I-NEXT: sltiu a0, a0, 255 |
| ; RV64I-NEXT: ret |
| ; |
| ; RV32ZBB-LABEL: add_ultcmp_i16_i8: |
| ; RV32ZBB: # %bb.0: |
| ; RV32ZBB-NEXT: zext.h a0, a0 |
| ; RV32ZBB-NEXT: addi a0, a0, -128 |
| ; RV32ZBB-NEXT: srli a0, a0, 8 |
| ; RV32ZBB-NEXT: sltiu a0, a0, 255 |
| ; RV32ZBB-NEXT: ret |
| ; |
| ; RV64ZBB-LABEL: add_ultcmp_i16_i8: |
| ; RV64ZBB: # %bb.0: |
| ; RV64ZBB-NEXT: zext.h a0, a0 |
| ; RV64ZBB-NEXT: addi a0, a0, -128 |
| ; RV64ZBB-NEXT: srli a0, a0, 8 |
| ; RV64ZBB-NEXT: sltiu a0, a0, 255 |
| ; RV64ZBB-NEXT: ret |
| %tmp0 = add i16 %x, -128 ; ~0U << (8-1) |
| %tmp1 = icmp ult i16 %tmp0, -256 ; ~0U << 8 |
| ret i1 %tmp1 |
| } |
| |
| define i1 @add_ultcmp_i32_i16(i32 %x) nounwind { |
| ; RV32I-LABEL: add_ultcmp_i32_i16: |
| ; RV32I: # %bb.0: |
| ; RV32I-NEXT: lui a1, 1048568 |
| ; RV32I-NEXT: add a0, a0, a1 |
| ; RV32I-NEXT: lui a1, 1048560 |
| ; RV32I-NEXT: sltu a0, a0, a1 |
| ; RV32I-NEXT: ret |
| ; |
| ; RV64I-LABEL: add_ultcmp_i32_i16: |
| ; RV64I: # %bb.0: |
| ; RV64I-NEXT: lui a1, 1048568 |
| ; RV64I-NEXT: addw a0, a0, a1 |
| ; RV64I-NEXT: lui a1, 1048560 |
| ; RV64I-NEXT: sltu a0, a0, a1 |
| ; RV64I-NEXT: ret |
| ; |
| ; RV32ZBB-LABEL: add_ultcmp_i32_i16: |
| ; RV32ZBB: # %bb.0: |
| ; RV32ZBB-NEXT: sext.h a1, a0 |
| ; RV32ZBB-NEXT: xor a0, a1, a0 |
| ; RV32ZBB-NEXT: snez a0, a0 |
| ; RV32ZBB-NEXT: ret |
| ; |
| ; RV64ZBB-LABEL: add_ultcmp_i32_i16: |
| ; RV64ZBB: # %bb.0: |
| ; RV64ZBB-NEXT: sext.w a1, a0 |
| ; RV64ZBB-NEXT: sext.h a0, a0 |
| ; RV64ZBB-NEXT: xor a0, a0, a1 |
| ; RV64ZBB-NEXT: snez a0, a0 |
| ; RV64ZBB-NEXT: ret |
| %tmp0 = add i32 %x, -32768 ; ~0U << (16-1) |
| %tmp1 = icmp ult i32 %tmp0, -65536 ; ~0U << 16 |
| ret i1 %tmp1 |
| } |
| |
| define i1 @add_ultcmp_i32_i8(i32 %x) nounwind { |
| ; RV32-LABEL: add_ultcmp_i32_i8: |
| ; RV32: # %bb.0: |
| ; RV32-NEXT: addi a0, a0, -128 |
| ; RV32-NEXT: sltiu a0, a0, -256 |
| ; RV32-NEXT: ret |
| ; |
| ; RV64-LABEL: add_ultcmp_i32_i8: |
| ; RV64: # %bb.0: |
| ; RV64-NEXT: addiw a0, a0, -128 |
| ; RV64-NEXT: sltiu a0, a0, -256 |
| ; RV64-NEXT: ret |
| %tmp0 = add i32 %x, -128 ; ~0U << (8-1) |
| %tmp1 = icmp ult i32 %tmp0, -256 ; ~0U << 8 |
| ret i1 %tmp1 |
| } |
| |
| define i1 @add_ultcmp_i64_i32(i64 %x) nounwind { |
| ; RV32-LABEL: add_ultcmp_i64_i32: |
| ; RV32: # %bb.0: |
| ; RV32-NEXT: srai a0, a0, 31 |
| ; RV32-NEXT: xor a0, a0, a1 |
| ; RV32-NEXT: snez a0, a0 |
| ; RV32-NEXT: ret |
| ; |
| ; RV64-LABEL: add_ultcmp_i64_i32: |
| ; RV64: # %bb.0: |
| ; RV64-NEXT: sext.w a1, a0 |
| ; RV64-NEXT: xor a0, a1, a0 |
| ; RV64-NEXT: snez a0, a0 |
| ; RV64-NEXT: ret |
| %tmp0 = add i64 %x, -2147483648 ; ~0U << (32-1) |
| %tmp1 = icmp ult i64 %tmp0, -4294967296 ; ~0U << 32 |
| ret i1 %tmp1 |
| } |
| |
| define i1 @add_ultcmp_i64_i16(i64 %x) nounwind { |
| ; RV32I-LABEL: add_ultcmp_i64_i16: |
| ; RV32I: # %bb.0: |
| ; RV32I-NEXT: lui a2, 1048568 |
| ; RV32I-NEXT: add a2, a0, a2 |
| ; RV32I-NEXT: sltu a0, a2, a0 |
| ; RV32I-NEXT: add a0, a1, a0 |
| ; RV32I-NEXT: lui a1, 1048560 |
| ; RV32I-NEXT: sltu a1, a2, a1 |
| ; RV32I-NEXT: snez a0, a0 |
| ; RV32I-NEXT: or a0, a1, a0 |
| ; RV32I-NEXT: ret |
| ; |
| ; RV64I-LABEL: add_ultcmp_i64_i16: |
| ; RV64I: # %bb.0: |
| ; RV64I-NEXT: lui a1, 1048568 |
| ; RV64I-NEXT: add a0, a0, a1 |
| ; RV64I-NEXT: lui a1, 1048560 |
| ; RV64I-NEXT: sltu a0, a0, a1 |
| ; RV64I-NEXT: ret |
| ; |
| ; RV32ZBB-LABEL: add_ultcmp_i64_i16: |
| ; RV32ZBB: # %bb.0: |
| ; RV32ZBB-NEXT: sext.h a2, a0 |
| ; RV32ZBB-NEXT: xor a0, a2, a0 |
| ; RV32ZBB-NEXT: srai a2, a2, 31 |
| ; RV32ZBB-NEXT: xor a1, a2, a1 |
| ; RV32ZBB-NEXT: or a0, a0, a1 |
| ; RV32ZBB-NEXT: snez a0, a0 |
| ; RV32ZBB-NEXT: ret |
| ; |
| ; RV64ZBB-LABEL: add_ultcmp_i64_i16: |
| ; RV64ZBB: # %bb.0: |
| ; RV64ZBB-NEXT: sext.h a1, a0 |
| ; RV64ZBB-NEXT: xor a0, a1, a0 |
| ; RV64ZBB-NEXT: snez a0, a0 |
| ; RV64ZBB-NEXT: ret |
| %tmp0 = add i64 %x, -32768 ; ~0U << (16-1) |
| %tmp1 = icmp ult i64 %tmp0, -65536 ; ~0U << 16 |
| ret i1 %tmp1 |
| } |
| |
| define i1 @add_ultcmp_i64_i8(i64 %x) nounwind { |
| ; RV32I-LABEL: add_ultcmp_i64_i8: |
| ; RV32I: # %bb.0: |
| ; RV32I-NEXT: addi a2, a0, -128 |
| ; RV32I-NEXT: sltu a0, a2, a0 |
| ; RV32I-NEXT: add a0, a1, a0 |
| ; RV32I-NEXT: snez a0, a0 |
| ; RV32I-NEXT: sltiu a1, a2, -256 |
| ; RV32I-NEXT: or a0, a1, a0 |
| ; RV32I-NEXT: ret |
| ; |
| ; RV64-LABEL: add_ultcmp_i64_i8: |
| ; RV64: # %bb.0: |
| ; RV64-NEXT: addi a0, a0, -128 |
| ; RV64-NEXT: sltiu a0, a0, -256 |
| ; RV64-NEXT: ret |
| ; |
| ; RV32ZBB-LABEL: add_ultcmp_i64_i8: |
| ; RV32ZBB: # %bb.0: |
| ; RV32ZBB-NEXT: sext.b a2, a0 |
| ; RV32ZBB-NEXT: xor a0, a2, a0 |
| ; RV32ZBB-NEXT: srai a2, a2, 31 |
| ; RV32ZBB-NEXT: xor a1, a2, a1 |
| ; RV32ZBB-NEXT: or a0, a0, a1 |
| ; RV32ZBB-NEXT: snez a0, a0 |
| ; RV32ZBB-NEXT: ret |
| %tmp0 = add i64 %x, -128 ; ~0U << (8-1) |
| %tmp1 = icmp ult i64 %tmp0, -256 ; ~0U << 8 |
| ret i1 %tmp1 |
| } |
| |
| ; Slightly more canonical variant |
| define i1 @add_ulecmp_i16_i8(i16 %x) nounwind { |
| ; RV32I-LABEL: add_ulecmp_i16_i8: |
| ; RV32I: # %bb.0: |
| ; RV32I-NEXT: slli a0, a0, 16 |
| ; RV32I-NEXT: srli a0, a0, 16 |
| ; RV32I-NEXT: addi a0, a0, -128 |
| ; RV32I-NEXT: srli a0, a0, 8 |
| ; RV32I-NEXT: sltiu a0, a0, 255 |
| ; RV32I-NEXT: ret |
| ; |
| ; RV64I-LABEL: add_ulecmp_i16_i8: |
| ; RV64I: # %bb.0: |
| ; RV64I-NEXT: slli a0, a0, 48 |
| ; RV64I-NEXT: srli a0, a0, 48 |
| ; RV64I-NEXT: addi a0, a0, -128 |
| ; RV64I-NEXT: srli a0, a0, 8 |
| ; RV64I-NEXT: sltiu a0, a0, 255 |
| ; RV64I-NEXT: ret |
| ; |
| ; RV32ZBB-LABEL: add_ulecmp_i16_i8: |
| ; RV32ZBB: # %bb.0: |
| ; RV32ZBB-NEXT: zext.h a0, a0 |
| ; RV32ZBB-NEXT: addi a0, a0, -128 |
| ; RV32ZBB-NEXT: srli a0, a0, 8 |
| ; RV32ZBB-NEXT: sltiu a0, a0, 255 |
| ; RV32ZBB-NEXT: ret |
| ; |
| ; RV64ZBB-LABEL: add_ulecmp_i16_i8: |
| ; RV64ZBB: # %bb.0: |
| ; RV64ZBB-NEXT: zext.h a0, a0 |
| ; RV64ZBB-NEXT: addi a0, a0, -128 |
| ; RV64ZBB-NEXT: srli a0, a0, 8 |
| ; RV64ZBB-NEXT: sltiu a0, a0, 255 |
| ; RV64ZBB-NEXT: ret |
| %tmp0 = add i16 %x, -128 ; ~0U << (8-1) |
| %tmp1 = icmp ule i16 %tmp0, -257 ; ~0U << 8 - 1 |
| ret i1 %tmp1 |
| } |
| |
| ; ---------------------------------------------------------------------------- ; |
| ; add + icmp uge |
| ; ---------------------------------------------------------------------------- ; |
| |
| define i1 @add_ugecmp_i16_i8(i16 %x) nounwind { |
| ; RV32I-LABEL: add_ugecmp_i16_i8: |
| ; RV32I: # %bb.0: |
| ; RV32I-NEXT: addi a0, a0, 128 |
| ; RV32I-NEXT: slli a0, a0, 16 |
| ; RV32I-NEXT: srli a0, a0, 16 |
| ; RV32I-NEXT: sltiu a0, a0, 256 |
| ; RV32I-NEXT: xori a0, a0, 1 |
| ; RV32I-NEXT: ret |
| ; |
| ; RV64I-LABEL: add_ugecmp_i16_i8: |
| ; RV64I: # %bb.0: |
| ; RV64I-NEXT: addi a0, a0, 128 |
| ; RV64I-NEXT: slli a0, a0, 48 |
| ; RV64I-NEXT: srli a0, a0, 48 |
| ; RV64I-NEXT: sltiu a0, a0, 256 |
| ; RV64I-NEXT: xori a0, a0, 1 |
| ; RV64I-NEXT: ret |
| ; |
| ; RV32ZBB-LABEL: add_ugecmp_i16_i8: |
| ; RV32ZBB: # %bb.0: |
| ; RV32ZBB-NEXT: addi a0, a0, 128 |
| ; RV32ZBB-NEXT: zext.h a0, a0 |
| ; RV32ZBB-NEXT: sltiu a0, a0, 256 |
| ; RV32ZBB-NEXT: xori a0, a0, 1 |
| ; RV32ZBB-NEXT: ret |
| ; |
| ; RV64ZBB-LABEL: add_ugecmp_i16_i8: |
| ; RV64ZBB: # %bb.0: |
| ; RV64ZBB-NEXT: addi a0, a0, 128 |
| ; RV64ZBB-NEXT: zext.h a0, a0 |
| ; RV64ZBB-NEXT: sltiu a0, a0, 256 |
| ; RV64ZBB-NEXT: xori a0, a0, 1 |
| ; RV64ZBB-NEXT: ret |
| %tmp0 = add i16 %x, 128 ; 1U << (8-1) |
| %tmp1 = icmp uge i16 %tmp0, 256 ; 1U << 8 |
| ret i1 %tmp1 |
| } |
| |
| define i1 @add_ugecmp_i32_i16(i32 %x) nounwind { |
| ; RV32I-LABEL: add_ugecmp_i32_i16: |
| ; RV32I: # %bb.0: |
| ; RV32I-NEXT: lui a1, 8 |
| ; RV32I-NEXT: add a0, a0, a1 |
| ; RV32I-NEXT: srli a0, a0, 16 |
| ; RV32I-NEXT: snez a0, a0 |
| ; RV32I-NEXT: ret |
| ; |
| ; RV64I-LABEL: add_ugecmp_i32_i16: |
| ; RV64I: # %bb.0: |
| ; RV64I-NEXT: lui a1, 8 |
| ; RV64I-NEXT: add a0, a0, a1 |
| ; RV64I-NEXT: srliw a0, a0, 16 |
| ; RV64I-NEXT: snez a0, a0 |
| ; RV64I-NEXT: ret |
| ; |
| ; RV32ZBB-LABEL: add_ugecmp_i32_i16: |
| ; RV32ZBB: # %bb.0: |
| ; RV32ZBB-NEXT: sext.h a1, a0 |
| ; RV32ZBB-NEXT: xor a0, a1, a0 |
| ; RV32ZBB-NEXT: snez a0, a0 |
| ; RV32ZBB-NEXT: ret |
| ; |
| ; RV64ZBB-LABEL: add_ugecmp_i32_i16: |
| ; RV64ZBB: # %bb.0: |
| ; RV64ZBB-NEXT: sext.w a1, a0 |
| ; RV64ZBB-NEXT: sext.h a0, a0 |
| ; RV64ZBB-NEXT: xor a0, a0, a1 |
| ; RV64ZBB-NEXT: snez a0, a0 |
| ; RV64ZBB-NEXT: ret |
| %tmp0 = add i32 %x, 32768 ; 1U << (16-1) |
| %tmp1 = icmp uge i32 %tmp0, 65536 ; 1U << 16 |
| ret i1 %tmp1 |
| } |
| |
| define i1 @add_ugecmp_i32_i8(i32 %x) nounwind { |
| ; RV32-LABEL: add_ugecmp_i32_i8: |
| ; RV32: # %bb.0: |
| ; RV32-NEXT: addi a0, a0, 128 |
| ; RV32-NEXT: sltiu a0, a0, 256 |
| ; RV32-NEXT: xori a0, a0, 1 |
| ; RV32-NEXT: ret |
| ; |
| ; RV64-LABEL: add_ugecmp_i32_i8: |
| ; RV64: # %bb.0: |
| ; RV64-NEXT: addiw a0, a0, 128 |
| ; RV64-NEXT: sltiu a0, a0, 256 |
| ; RV64-NEXT: xori a0, a0, 1 |
| ; RV64-NEXT: ret |
| %tmp0 = add i32 %x, 128 ; 1U << (8-1) |
| %tmp1 = icmp uge i32 %tmp0, 256 ; 1U << 8 |
| ret i1 %tmp1 |
| } |
| |
| define i1 @add_ugecmp_i64_i32(i64 %x) nounwind { |
| ; RV32-LABEL: add_ugecmp_i64_i32: |
| ; RV32: # %bb.0: |
| ; RV32-NEXT: srai a0, a0, 31 |
| ; RV32-NEXT: xor a0, a0, a1 |
| ; RV32-NEXT: snez a0, a0 |
| ; RV32-NEXT: ret |
| ; |
| ; RV64-LABEL: add_ugecmp_i64_i32: |
| ; RV64: # %bb.0: |
| ; RV64-NEXT: sext.w a1, a0 |
| ; RV64-NEXT: xor a0, a1, a0 |
| ; RV64-NEXT: snez a0, a0 |
| ; RV64-NEXT: ret |
| %tmp0 = add i64 %x, 2147483648 ; 1U << (32-1) |
| %tmp1 = icmp uge i64 %tmp0, 4294967296 ; 1U << 32 |
| ret i1 %tmp1 |
| } |
| |
| define i1 @add_ugecmp_i64_i16(i64 %x) nounwind { |
| ; RV32I-LABEL: add_ugecmp_i64_i16: |
| ; RV32I: # %bb.0: |
| ; RV32I-NEXT: lui a2, 8 |
| ; RV32I-NEXT: add a2, a0, a2 |
| ; RV32I-NEXT: sltu a0, a2, a0 |
| ; RV32I-NEXT: add a0, a1, a0 |
| ; RV32I-NEXT: srli a2, a2, 16 |
| ; RV32I-NEXT: or a0, a0, a2 |
| ; RV32I-NEXT: snez a0, a0 |
| ; RV32I-NEXT: ret |
| ; |
| ; RV64I-LABEL: add_ugecmp_i64_i16: |
| ; RV64I: # %bb.0: |
| ; RV64I-NEXT: lui a1, 8 |
| ; RV64I-NEXT: add a0, a0, a1 |
| ; RV64I-NEXT: srli a0, a0, 16 |
| ; RV64I-NEXT: snez a0, a0 |
| ; RV64I-NEXT: ret |
| ; |
| ; RV32ZBB-LABEL: add_ugecmp_i64_i16: |
| ; RV32ZBB: # %bb.0: |
| ; RV32ZBB-NEXT: sext.h a2, a0 |
| ; RV32ZBB-NEXT: xor a0, a2, a0 |
| ; RV32ZBB-NEXT: srai a2, a2, 31 |
| ; RV32ZBB-NEXT: xor a1, a2, a1 |
| ; RV32ZBB-NEXT: or a0, a0, a1 |
| ; RV32ZBB-NEXT: snez a0, a0 |
| ; RV32ZBB-NEXT: ret |
| ; |
| ; RV64ZBB-LABEL: add_ugecmp_i64_i16: |
| ; RV64ZBB: # %bb.0: |
| ; RV64ZBB-NEXT: sext.h a1, a0 |
| ; RV64ZBB-NEXT: xor a0, a1, a0 |
| ; RV64ZBB-NEXT: snez a0, a0 |
| ; RV64ZBB-NEXT: ret |
| %tmp0 = add i64 %x, 32768 ; 1U << (16-1) |
| %tmp1 = icmp uge i64 %tmp0, 65536 ; 1U << 16 |
| ret i1 %tmp1 |
| } |
| |
| define i1 @add_ugecmp_i64_i8(i64 %x) nounwind { |
| ; RV32I-LABEL: add_ugecmp_i64_i8: |
| ; RV32I: # %bb.0: |
| ; RV32I-NEXT: addi a2, a0, 128 |
| ; RV32I-NEXT: sltu a0, a2, a0 |
| ; RV32I-NEXT: add a0, a1, a0 |
| ; RV32I-NEXT: snez a0, a0 |
| ; RV32I-NEXT: sltiu a1, a2, 256 |
| ; RV32I-NEXT: xori a1, a1, 1 |
| ; RV32I-NEXT: or a0, a1, a0 |
| ; RV32I-NEXT: ret |
| ; |
| ; RV64-LABEL: add_ugecmp_i64_i8: |
| ; RV64: # %bb.0: |
| ; RV64-NEXT: addi a0, a0, 128 |
| ; RV64-NEXT: sltiu a0, a0, 256 |
| ; RV64-NEXT: xori a0, a0, 1 |
| ; RV64-NEXT: ret |
| ; |
| ; RV32ZBB-LABEL: add_ugecmp_i64_i8: |
| ; RV32ZBB: # %bb.0: |
| ; RV32ZBB-NEXT: sext.b a2, a0 |
| ; RV32ZBB-NEXT: xor a0, a2, a0 |
| ; RV32ZBB-NEXT: srai a2, a2, 31 |
| ; RV32ZBB-NEXT: xor a1, a2, a1 |
| ; RV32ZBB-NEXT: or a0, a0, a1 |
| ; RV32ZBB-NEXT: snez a0, a0 |
| ; RV32ZBB-NEXT: ret |
| %tmp0 = add i64 %x, 128 ; 1U << (8-1) |
| %tmp1 = icmp uge i64 %tmp0, 256 ; 1U << 8 |
| ret i1 %tmp1 |
| } |
| |
| ; Slightly more canonical variant |
| define i1 @add_ugtcmp_i16_i8(i16 %x) nounwind { |
| ; RV32I-LABEL: add_ugtcmp_i16_i8: |
| ; RV32I: # %bb.0: |
| ; RV32I-NEXT: addi a0, a0, 128 |
| ; RV32I-NEXT: slli a0, a0, 16 |
| ; RV32I-NEXT: srli a0, a0, 16 |
| ; RV32I-NEXT: sltiu a0, a0, 256 |
| ; RV32I-NEXT: xori a0, a0, 1 |
| ; RV32I-NEXT: ret |
| ; |
| ; RV64I-LABEL: add_ugtcmp_i16_i8: |
| ; RV64I: # %bb.0: |
| ; RV64I-NEXT: addi a0, a0, 128 |
| ; RV64I-NEXT: slli a0, a0, 48 |
| ; RV64I-NEXT: srli a0, a0, 48 |
| ; RV64I-NEXT: sltiu a0, a0, 256 |
| ; RV64I-NEXT: xori a0, a0, 1 |
| ; RV64I-NEXT: ret |
| ; |
| ; RV32ZBB-LABEL: add_ugtcmp_i16_i8: |
| ; RV32ZBB: # %bb.0: |
| ; RV32ZBB-NEXT: addi a0, a0, 128 |
| ; RV32ZBB-NEXT: zext.h a0, a0 |
| ; RV32ZBB-NEXT: sltiu a0, a0, 256 |
| ; RV32ZBB-NEXT: xori a0, a0, 1 |
| ; RV32ZBB-NEXT: ret |
| ; |
| ; RV64ZBB-LABEL: add_ugtcmp_i16_i8: |
| ; RV64ZBB: # %bb.0: |
| ; RV64ZBB-NEXT: addi a0, a0, 128 |
| ; RV64ZBB-NEXT: zext.h a0, a0 |
| ; RV64ZBB-NEXT: sltiu a0, a0, 256 |
| ; RV64ZBB-NEXT: xori a0, a0, 1 |
| ; RV64ZBB-NEXT: ret |
| %tmp0 = add i16 %x, 128 ; 1U << (8-1) |
| %tmp1 = icmp ugt i16 %tmp0, 255 ; (1U << 8) - 1 |
| ret i1 %tmp1 |
| } |
| |
| ; Negative tests |
| ; ---------------------------------------------------------------------------- ; |
| |
| ; Adding not a constant |
| define i1 @add_ugecmp_bad_i16_i8_add(i16 %x, i16 %y) nounwind { |
| ; RV32I-LABEL: add_ugecmp_bad_i16_i8_add: |
| ; RV32I: # %bb.0: |
| ; RV32I-NEXT: add a0, a0, a1 |
| ; RV32I-NEXT: slli a0, a0, 16 |
| ; RV32I-NEXT: srli a0, a0, 16 |
| ; RV32I-NEXT: sltiu a0, a0, 256 |
| ; RV32I-NEXT: xori a0, a0, 1 |
| ; RV32I-NEXT: ret |
| ; |
| ; RV64I-LABEL: add_ugecmp_bad_i16_i8_add: |
| ; RV64I: # %bb.0: |
| ; RV64I-NEXT: add a0, a0, a1 |
| ; RV64I-NEXT: slli a0, a0, 48 |
| ; RV64I-NEXT: srli a0, a0, 48 |
| ; RV64I-NEXT: sltiu a0, a0, 256 |
| ; RV64I-NEXT: xori a0, a0, 1 |
| ; RV64I-NEXT: ret |
| ; |
| ; RV32ZBB-LABEL: add_ugecmp_bad_i16_i8_add: |
| ; RV32ZBB: # %bb.0: |
| ; RV32ZBB-NEXT: add a0, a0, a1 |
| ; RV32ZBB-NEXT: zext.h a0, a0 |
| ; RV32ZBB-NEXT: sltiu a0, a0, 256 |
| ; RV32ZBB-NEXT: xori a0, a0, 1 |
| ; RV32ZBB-NEXT: ret |
| ; |
| ; RV64ZBB-LABEL: add_ugecmp_bad_i16_i8_add: |
| ; RV64ZBB: # %bb.0: |
| ; RV64ZBB-NEXT: add a0, a0, a1 |
| ; RV64ZBB-NEXT: zext.h a0, a0 |
| ; RV64ZBB-NEXT: sltiu a0, a0, 256 |
| ; RV64ZBB-NEXT: xori a0, a0, 1 |
| ; RV64ZBB-NEXT: ret |
| %tmp0 = add i16 %x, %y |
| %tmp1 = icmp uge i16 %tmp0, 256 ; 1U << 8 |
| ret i1 %tmp1 |
| } |
| |
| ; Comparing not with a constant |
| define i1 @add_ugecmp_bad_i16_i8_cmp(i16 %x, i16 %y) nounwind { |
| ; RV32I-LABEL: add_ugecmp_bad_i16_i8_cmp: |
| ; RV32I: # %bb.0: |
| ; RV32I-NEXT: lui a2, 16 |
| ; RV32I-NEXT: addi a2, a2, -1 |
| ; RV32I-NEXT: and a1, a1, a2 |
| ; RV32I-NEXT: addi a0, a0, 128 |
| ; RV32I-NEXT: and a0, a0, a2 |
| ; RV32I-NEXT: sltu a0, a0, a1 |
| ; RV32I-NEXT: xori a0, a0, 1 |
| ; RV32I-NEXT: ret |
| ; |
| ; RV64I-LABEL: add_ugecmp_bad_i16_i8_cmp: |
| ; RV64I: # %bb.0: |
| ; RV64I-NEXT: lui a2, 16 |
| ; RV64I-NEXT: addiw a2, a2, -1 |
| ; RV64I-NEXT: and a1, a1, a2 |
| ; RV64I-NEXT: addi a0, a0, 128 |
| ; RV64I-NEXT: and a0, a0, a2 |
| ; RV64I-NEXT: sltu a0, a0, a1 |
| ; RV64I-NEXT: xori a0, a0, 1 |
| ; RV64I-NEXT: ret |
| ; |
| ; RV32ZBB-LABEL: add_ugecmp_bad_i16_i8_cmp: |
| ; RV32ZBB: # %bb.0: |
| ; RV32ZBB-NEXT: zext.h a1, a1 |
| ; RV32ZBB-NEXT: addi a0, a0, 128 |
| ; RV32ZBB-NEXT: zext.h a0, a0 |
| ; RV32ZBB-NEXT: sltu a0, a0, a1 |
| ; RV32ZBB-NEXT: xori a0, a0, 1 |
| ; RV32ZBB-NEXT: ret |
| ; |
| ; RV64ZBB-LABEL: add_ugecmp_bad_i16_i8_cmp: |
| ; RV64ZBB: # %bb.0: |
| ; RV64ZBB-NEXT: zext.h a1, a1 |
| ; RV64ZBB-NEXT: addi a0, a0, 128 |
| ; RV64ZBB-NEXT: zext.h a0, a0 |
| ; RV64ZBB-NEXT: sltu a0, a0, a1 |
| ; RV64ZBB-NEXT: xori a0, a0, 1 |
| ; RV64ZBB-NEXT: ret |
| %tmp0 = add i16 %x, 128 ; 1U << (8-1) |
| %tmp1 = icmp uge i16 %tmp0, %y |
| ret i1 %tmp1 |
| } |
| |
| ; Second constant is not larger than the first one |
| define i1 @add_ugecmp_bad_i8_i16(i16 %x) nounwind { |
| ; RV32I-LABEL: add_ugecmp_bad_i8_i16: |
| ; RV32I: # %bb.0: |
| ; RV32I-NEXT: addi a0, a0, 128 |
| ; RV32I-NEXT: slli a0, a0, 16 |
| ; RV32I-NEXT: srli a0, a0, 16 |
| ; RV32I-NEXT: sltiu a0, a0, 128 |
| ; RV32I-NEXT: xori a0, a0, 1 |
| ; RV32I-NEXT: ret |
| ; |
| ; RV64I-LABEL: add_ugecmp_bad_i8_i16: |
| ; RV64I: # %bb.0: |
| ; RV64I-NEXT: addi a0, a0, 128 |
| ; RV64I-NEXT: slli a0, a0, 48 |
| ; RV64I-NEXT: srli a0, a0, 48 |
| ; RV64I-NEXT: sltiu a0, a0, 128 |
| ; RV64I-NEXT: xori a0, a0, 1 |
| ; RV64I-NEXT: ret |
| ; |
| ; RV32ZBB-LABEL: add_ugecmp_bad_i8_i16: |
| ; RV32ZBB: # %bb.0: |
| ; RV32ZBB-NEXT: addi a0, a0, 128 |
| ; RV32ZBB-NEXT: zext.h a0, a0 |
| ; RV32ZBB-NEXT: sltiu a0, a0, 128 |
| ; RV32ZBB-NEXT: xori a0, a0, 1 |
| ; RV32ZBB-NEXT: ret |
| ; |
| ; RV64ZBB-LABEL: add_ugecmp_bad_i8_i16: |
| ; RV64ZBB: # %bb.0: |
| ; RV64ZBB-NEXT: addi a0, a0, 128 |
| ; RV64ZBB-NEXT: zext.h a0, a0 |
| ; RV64ZBB-NEXT: sltiu a0, a0, 128 |
| ; RV64ZBB-NEXT: xori a0, a0, 1 |
| ; RV64ZBB-NEXT: ret |
| %tmp0 = add i16 %x, 128 ; 1U << (8-1) |
| %tmp1 = icmp uge i16 %tmp0, 128 ; 1U << (8-1) |
| ret i1 %tmp1 |
| } |
| |
| ; First constant is not power of two |
| define i1 @add_ugecmp_bad_i16_i8_c0notpoweroftwo(i16 %x) nounwind { |
| ; RV32I-LABEL: add_ugecmp_bad_i16_i8_c0notpoweroftwo: |
| ; RV32I: # %bb.0: |
| ; RV32I-NEXT: addi a0, a0, 192 |
| ; RV32I-NEXT: slli a0, a0, 16 |
| ; RV32I-NEXT: srli a0, a0, 16 |
| ; RV32I-NEXT: sltiu a0, a0, 256 |
| ; RV32I-NEXT: xori a0, a0, 1 |
| ; RV32I-NEXT: ret |
| ; |
| ; RV64I-LABEL: add_ugecmp_bad_i16_i8_c0notpoweroftwo: |
| ; RV64I: # %bb.0: |
| ; RV64I-NEXT: addi a0, a0, 192 |
| ; RV64I-NEXT: slli a0, a0, 48 |
| ; RV64I-NEXT: srli a0, a0, 48 |
| ; RV64I-NEXT: sltiu a0, a0, 256 |
| ; RV64I-NEXT: xori a0, a0, 1 |
| ; RV64I-NEXT: ret |
| ; |
| ; RV32ZBB-LABEL: add_ugecmp_bad_i16_i8_c0notpoweroftwo: |
| ; RV32ZBB: # %bb.0: |
| ; RV32ZBB-NEXT: addi a0, a0, 192 |
| ; RV32ZBB-NEXT: zext.h a0, a0 |
| ; RV32ZBB-NEXT: sltiu a0, a0, 256 |
| ; RV32ZBB-NEXT: xori a0, a0, 1 |
| ; RV32ZBB-NEXT: ret |
| ; |
| ; RV64ZBB-LABEL: add_ugecmp_bad_i16_i8_c0notpoweroftwo: |
| ; RV64ZBB: # %bb.0: |
| ; RV64ZBB-NEXT: addi a0, a0, 192 |
| ; RV64ZBB-NEXT: zext.h a0, a0 |
| ; RV64ZBB-NEXT: sltiu a0, a0, 256 |
| ; RV64ZBB-NEXT: xori a0, a0, 1 |
| ; RV64ZBB-NEXT: ret |
| %tmp0 = add i16 %x, 192 ; (1U << (8-1)) + (1U << (8-1-1)) |
| %tmp1 = icmp uge i16 %tmp0, 256 ; 1U << 8 |
| ret i1 %tmp1 |
| } |
| |
| ; Second constant is not power of two |
| define i1 @add_ugecmp_bad_i16_i8_c1notpoweroftwo(i16 %x) nounwind { |
| ; RV32I-LABEL: add_ugecmp_bad_i16_i8_c1notpoweroftwo: |
| ; RV32I: # %bb.0: |
| ; RV32I-NEXT: addi a0, a0, 128 |
| ; RV32I-NEXT: slli a0, a0, 16 |
| ; RV32I-NEXT: srli a0, a0, 16 |
| ; RV32I-NEXT: sltiu a0, a0, 768 |
| ; RV32I-NEXT: xori a0, a0, 1 |
| ; RV32I-NEXT: ret |
| ; |
| ; RV64I-LABEL: add_ugecmp_bad_i16_i8_c1notpoweroftwo: |
| ; RV64I: # %bb.0: |
| ; RV64I-NEXT: addi a0, a0, 128 |
| ; RV64I-NEXT: slli a0, a0, 48 |
| ; RV64I-NEXT: srli a0, a0, 48 |
| ; RV64I-NEXT: sltiu a0, a0, 768 |
| ; RV64I-NEXT: xori a0, a0, 1 |
| ; RV64I-NEXT: ret |
| ; |
| ; RV32ZBB-LABEL: add_ugecmp_bad_i16_i8_c1notpoweroftwo: |
| ; RV32ZBB: # %bb.0: |
| ; RV32ZBB-NEXT: addi a0, a0, 128 |
| ; RV32ZBB-NEXT: zext.h a0, a0 |
| ; RV32ZBB-NEXT: sltiu a0, a0, 768 |
| ; RV32ZBB-NEXT: xori a0, a0, 1 |
| ; RV32ZBB-NEXT: ret |
| ; |
| ; RV64ZBB-LABEL: add_ugecmp_bad_i16_i8_c1notpoweroftwo: |
| ; RV64ZBB: # %bb.0: |
| ; RV64ZBB-NEXT: addi a0, a0, 128 |
| ; RV64ZBB-NEXT: zext.h a0, a0 |
| ; RV64ZBB-NEXT: sltiu a0, a0, 768 |
| ; RV64ZBB-NEXT: xori a0, a0, 1 |
| ; RV64ZBB-NEXT: ret |
| %tmp0 = add i16 %x, 128 ; 1U << (8-1) |
| %tmp1 = icmp uge i16 %tmp0, 768 ; (1U << 8)) + (1U << (8+1)) |
| ret i1 %tmp1 |
| } |
| |
| ; Magic check fails, 64 << 1 != 256 |
| define i1 @add_ugecmp_bad_i16_i8_magic(i16 %x) nounwind { |
| ; RV32I-LABEL: add_ugecmp_bad_i16_i8_magic: |
| ; RV32I: # %bb.0: |
| ; RV32I-NEXT: addi a0, a0, 64 |
| ; RV32I-NEXT: slli a0, a0, 16 |
| ; RV32I-NEXT: srli a0, a0, 16 |
| ; RV32I-NEXT: sltiu a0, a0, 256 |
| ; RV32I-NEXT: xori a0, a0, 1 |
| ; RV32I-NEXT: ret |
| ; |
| ; RV64I-LABEL: add_ugecmp_bad_i16_i8_magic: |
| ; RV64I: # %bb.0: |
| ; RV64I-NEXT: addi a0, a0, 64 |
| ; RV64I-NEXT: slli a0, a0, 48 |
| ; RV64I-NEXT: srli a0, a0, 48 |
| ; RV64I-NEXT: sltiu a0, a0, 256 |
| ; RV64I-NEXT: xori a0, a0, 1 |
| ; RV64I-NEXT: ret |
| ; |
| ; RV32ZBB-LABEL: add_ugecmp_bad_i16_i8_magic: |
| ; RV32ZBB: # %bb.0: |
| ; RV32ZBB-NEXT: addi a0, a0, 64 |
| ; RV32ZBB-NEXT: zext.h a0, a0 |
| ; RV32ZBB-NEXT: sltiu a0, a0, 256 |
| ; RV32ZBB-NEXT: xori a0, a0, 1 |
| ; RV32ZBB-NEXT: ret |
| ; |
| ; RV64ZBB-LABEL: add_ugecmp_bad_i16_i8_magic: |
| ; RV64ZBB: # %bb.0: |
| ; RV64ZBB-NEXT: addi a0, a0, 64 |
| ; RV64ZBB-NEXT: zext.h a0, a0 |
| ; RV64ZBB-NEXT: sltiu a0, a0, 256 |
| ; RV64ZBB-NEXT: xori a0, a0, 1 |
| ; RV64ZBB-NEXT: ret |
| %tmp0 = add i16 %x, 64 ; 1U << (8-1-1) |
| %tmp1 = icmp uge i16 %tmp0, 256 ; 1U << 8 |
| ret i1 %tmp1 |
| } |
| |
| ; Bad 'destination type' |
| define i1 @add_ugecmp_bad_i16_i4(i16 %x) nounwind { |
| ; RV32I-LABEL: add_ugecmp_bad_i16_i4: |
| ; RV32I: # %bb.0: |
| ; RV32I-NEXT: addi a0, a0, 8 |
| ; RV32I-NEXT: slli a0, a0, 16 |
| ; RV32I-NEXT: srli a0, a0, 16 |
| ; RV32I-NEXT: sltiu a0, a0, 16 |
| ; RV32I-NEXT: xori a0, a0, 1 |
| ; RV32I-NEXT: ret |
| ; |
| ; RV64I-LABEL: add_ugecmp_bad_i16_i4: |
| ; RV64I: # %bb.0: |
| ; RV64I-NEXT: addi a0, a0, 8 |
| ; RV64I-NEXT: slli a0, a0, 48 |
| ; RV64I-NEXT: srli a0, a0, 48 |
| ; RV64I-NEXT: sltiu a0, a0, 16 |
| ; RV64I-NEXT: xori a0, a0, 1 |
| ; RV64I-NEXT: ret |
| ; |
| ; RV32ZBB-LABEL: add_ugecmp_bad_i16_i4: |
| ; RV32ZBB: # %bb.0: |
| ; RV32ZBB-NEXT: addi a0, a0, 8 |
| ; RV32ZBB-NEXT: zext.h a0, a0 |
| ; RV32ZBB-NEXT: sltiu a0, a0, 16 |
| ; RV32ZBB-NEXT: xori a0, a0, 1 |
| ; RV32ZBB-NEXT: ret |
| ; |
| ; RV64ZBB-LABEL: add_ugecmp_bad_i16_i4: |
| ; RV64ZBB: # %bb.0: |
| ; RV64ZBB-NEXT: addi a0, a0, 8 |
| ; RV64ZBB-NEXT: zext.h a0, a0 |
| ; RV64ZBB-NEXT: sltiu a0, a0, 16 |
| ; RV64ZBB-NEXT: xori a0, a0, 1 |
| ; RV64ZBB-NEXT: ret |
| %tmp0 = add i16 %x, 8 ; 1U << (4-1) |
| %tmp1 = icmp uge i16 %tmp0, 16 ; 1U << 4 |
| ret i1 %tmp1 |
| } |
| |
| ; Bad storage type |
| define i1 @add_ugecmp_bad_i24_i8(i24 %x) nounwind { |
| ; RV32-LABEL: add_ugecmp_bad_i24_i8: |
| ; RV32: # %bb.0: |
| ; RV32-NEXT: addi a0, a0, 128 |
| ; RV32-NEXT: slli a0, a0, 8 |
| ; RV32-NEXT: srli a0, a0, 8 |
| ; RV32-NEXT: sltiu a0, a0, 256 |
| ; RV32-NEXT: xori a0, a0, 1 |
| ; RV32-NEXT: ret |
| ; |
| ; RV64-LABEL: add_ugecmp_bad_i24_i8: |
| ; RV64: # %bb.0: |
| ; RV64-NEXT: addi a0, a0, 128 |
| ; RV64-NEXT: slli a0, a0, 40 |
| ; RV64-NEXT: srli a0, a0, 40 |
| ; RV64-NEXT: sltiu a0, a0, 256 |
| ; RV64-NEXT: xori a0, a0, 1 |
| ; RV64-NEXT: ret |
| %tmp0 = add i24 %x, 128 ; 1U << (8-1) |
| %tmp1 = icmp uge i24 %tmp0, 256 ; 1U << 8 |
| ret i1 %tmp1 |
| } |
| |
| ; Slightly more canonical variant |
| define i1 @add_ugtcmp_bad_i16_i8(i16 %x) nounwind { |
| ; CHECK-LABEL: add_ugtcmp_bad_i16_i8: |
| ; CHECK: # %bb.0: |
| ; CHECK-NEXT: li a0, 0 |
| ; CHECK-NEXT: ret |
| %tmp0 = add i16 %x, 128 ; 1U << (8-1) |
| %tmp1 = icmp ugt i16 %tmp0, -1 ; when we +1 it, it will wrap to 0 |
| ret i1 %tmp1 |
| } |
