| ; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py |
| ; RUN: llc -mtriple=riscv32 -mattr=+m -verify-machineinstrs < %s \ |
| ; RUN: | FileCheck -check-prefixes=RV32,RV32IM %s |
| ; RUN: llc -mtriple=riscv32 -mattr=+m,+zba,+zbb \ |
| ; RUN: -verify-machineinstrs < %s \ |
| ; RUN: | FileCheck -check-prefixes=RV32,RV32IMZB %s |
| ; RUN: llc -mtriple=riscv64 -mattr=+m -verify-machineinstrs < %s \ |
| ; RUN: | FileCheck -check-prefixes=RV64,RV64IM %s |
| ; RUN: llc -mtriple=riscv64 -mattr=+m,+zba,+zbb \ |
| ; RUN: -verify-machineinstrs < %s \ |
| ; RUN: | FileCheck -check-prefixes=RV64,RV64IMZB %s |
| |
| ; Test that there is a single shift after the mul and no addition. |
| define i32 @udiv_constant_no_add(i32 %a) nounwind { |
| ; RV32-LABEL: udiv_constant_no_add: |
| ; RV32: # %bb.0: |
| ; RV32-NEXT: lui a1, 838861 |
| ; RV32-NEXT: addi a1, a1, -819 |
| ; RV32-NEXT: mulhu a0, a0, a1 |
| ; RV32-NEXT: srli a0, a0, 2 |
| ; RV32-NEXT: ret |
| ; |
| ; RV64-LABEL: udiv_constant_no_add: |
| ; RV64: # %bb.0: |
| ; RV64-NEXT: slli a0, a0, 32 |
| ; RV64-NEXT: lui a1, 838861 |
| ; RV64-NEXT: addi a1, a1, -819 |
| ; RV64-NEXT: slli a1, a1, 32 |
| ; RV64-NEXT: mulhu a0, a0, a1 |
| ; RV64-NEXT: srli a0, a0, 34 |
| ; RV64-NEXT: ret |
| %1 = udiv i32 %a, 5 |
| ret i32 %1 |
| } |
| |
| ; This constant requires a sub, shrli, add sequence after the mul. |
| define i32 @udiv_constant_add(i32 %a) nounwind { |
| ; RV32-LABEL: udiv_constant_add: |
| ; RV32: # %bb.0: |
| ; RV32-NEXT: lui a1, 149797 |
| ; RV32-NEXT: addi a1, a1, -1755 |
| ; RV32-NEXT: mulhu a1, a0, a1 |
| ; RV32-NEXT: sub a0, a0, a1 |
| ; RV32-NEXT: srli a0, a0, 1 |
| ; RV32-NEXT: add a0, a0, a1 |
| ; RV32-NEXT: srli a0, a0, 2 |
| ; RV32-NEXT: ret |
| ; |
| ; RV64IM-LABEL: udiv_constant_add: |
| ; RV64IM: # %bb.0: |
| ; RV64IM-NEXT: slli a1, a0, 32 |
| ; RV64IM-NEXT: lui a2, 149797 |
| ; RV64IM-NEXT: addi a2, a2, -1755 |
| ; RV64IM-NEXT: slli a2, a2, 32 |
| ; RV64IM-NEXT: mulhu a1, a1, a2 |
| ; RV64IM-NEXT: srli a1, a1, 32 |
| ; RV64IM-NEXT: subw a0, a0, a1 |
| ; RV64IM-NEXT: srliw a0, a0, 1 |
| ; RV64IM-NEXT: add a0, a0, a1 |
| ; RV64IM-NEXT: srli a0, a0, 2 |
| ; RV64IM-NEXT: ret |
| ; |
| ; RV64IMZB-LABEL: udiv_constant_add: |
| ; RV64IMZB: # %bb.0: |
| ; RV64IMZB-NEXT: zext.w a1, a0 |
| ; RV64IMZB-NEXT: lui a2, 149797 |
| ; RV64IMZB-NEXT: addiw a2, a2, -1755 |
| ; RV64IMZB-NEXT: mul a1, a1, a2 |
| ; RV64IMZB-NEXT: srli a1, a1, 32 |
| ; RV64IMZB-NEXT: subw a0, a0, a1 |
| ; RV64IMZB-NEXT: srliw a0, a0, 1 |
| ; RV64IMZB-NEXT: add a0, a0, a1 |
| ; RV64IMZB-NEXT: srli a0, a0, 2 |
| ; RV64IMZB-NEXT: ret |
| %1 = udiv i32 %a, 7 |
| ret i32 %1 |
| } |
| |
| define i64 @udiv64_constant_no_add(i64 %a) nounwind { |
| ; RV32-LABEL: udiv64_constant_no_add: |
| ; RV32: # %bb.0: |
| ; RV32-NEXT: add a2, a0, a1 |
| ; RV32-NEXT: sltu a3, a2, a0 |
| ; RV32-NEXT: add a2, a2, a3 |
| ; RV32-NEXT: lui a3, 838861 |
| ; RV32-NEXT: addi a4, a3, -819 |
| ; RV32-NEXT: mulhu a5, a2, a4 |
| ; RV32-NEXT: srli a6, a5, 2 |
| ; RV32-NEXT: andi a5, a5, -4 |
| ; RV32-NEXT: add a5, a5, a6 |
| ; RV32-NEXT: sub a2, a2, a5 |
| ; RV32-NEXT: sub a5, a0, a2 |
| ; RV32-NEXT: addi a3, a3, -820 |
| ; RV32-NEXT: mul a3, a5, a3 |
| ; RV32-NEXT: mulhu a6, a5, a4 |
| ; RV32-NEXT: add a3, a6, a3 |
| ; RV32-NEXT: sltu a0, a0, a2 |
| ; RV32-NEXT: sub a1, a1, a0 |
| ; RV32-NEXT: mul a1, a1, a4 |
| ; RV32-NEXT: add a1, a3, a1 |
| ; RV32-NEXT: mul a0, a5, a4 |
| ; RV32-NEXT: ret |
| ; |
| ; RV64-LABEL: udiv64_constant_no_add: |
| ; RV64: # %bb.0: |
| ; RV64-NEXT: lui a1, 838861 |
| ; RV64-NEXT: addiw a1, a1, -819 |
| ; RV64-NEXT: slli a2, a1, 32 |
| ; RV64-NEXT: add a1, a1, a2 |
| ; RV64-NEXT: mulhu a0, a0, a1 |
| ; RV64-NEXT: srli a0, a0, 2 |
| ; RV64-NEXT: ret |
| %1 = udiv i64 %a, 5 |
| ret i64 %1 |
| } |
| |
| define i64 @udiv64_constant_add(i64 %a) nounwind { |
| ; RV32-LABEL: udiv64_constant_add: |
| ; RV32: # %bb.0: |
| ; RV32-NEXT: addi sp, sp, -16 |
| ; RV32-NEXT: sw ra, 12(sp) # 4-byte Folded Spill |
| ; RV32-NEXT: li a2, 7 |
| ; RV32-NEXT: li a3, 0 |
| ; RV32-NEXT: call __udivdi3 |
| ; RV32-NEXT: lw ra, 12(sp) # 4-byte Folded Reload |
| ; RV32-NEXT: addi sp, sp, 16 |
| ; RV32-NEXT: ret |
| ; |
| ; RV64-LABEL: udiv64_constant_add: |
| ; RV64: # %bb.0: |
| ; RV64-NEXT: lui a1, %hi(.LCPI3_0) |
| ; RV64-NEXT: ld a1, %lo(.LCPI3_0)(a1) |
| ; RV64-NEXT: mulhu a1, a0, a1 |
| ; RV64-NEXT: sub a0, a0, a1 |
| ; RV64-NEXT: srli a0, a0, 1 |
| ; RV64-NEXT: add a0, a0, a1 |
| ; RV64-NEXT: srli a0, a0, 2 |
| ; RV64-NEXT: ret |
| %1 = udiv i64 %a, 7 |
| ret i64 %1 |
| } |
| |
| define i8 @udiv8_constant_no_add(i8 %a) nounwind { |
| ; RV32-LABEL: udiv8_constant_no_add: |
| ; RV32: # %bb.0: |
| ; RV32-NEXT: andi a0, a0, 255 |
| ; RV32-NEXT: li a1, 205 |
| ; RV32-NEXT: mul a0, a0, a1 |
| ; RV32-NEXT: srli a0, a0, 10 |
| ; RV32-NEXT: ret |
| ; |
| ; RV64-LABEL: udiv8_constant_no_add: |
| ; RV64: # %bb.0: |
| ; RV64-NEXT: andi a0, a0, 255 |
| ; RV64-NEXT: li a1, 205 |
| ; RV64-NEXT: mul a0, a0, a1 |
| ; RV64-NEXT: srli a0, a0, 10 |
| ; RV64-NEXT: ret |
| %1 = udiv i8 %a, 5 |
| ret i8 %1 |
| } |
| |
| define i8 @udiv8_constant_add(i8 %a) nounwind { |
| ; RV32IM-LABEL: udiv8_constant_add: |
| ; RV32IM: # %bb.0: |
| ; RV32IM-NEXT: andi a1, a0, 255 |
| ; RV32IM-NEXT: li a2, 37 |
| ; RV32IM-NEXT: mul a1, a1, a2 |
| ; RV32IM-NEXT: srli a1, a1, 8 |
| ; RV32IM-NEXT: sub a0, a0, a1 |
| ; RV32IM-NEXT: slli a0, a0, 24 |
| ; RV32IM-NEXT: srli a0, a0, 25 |
| ; RV32IM-NEXT: add a0, a0, a1 |
| ; RV32IM-NEXT: srli a0, a0, 2 |
| ; RV32IM-NEXT: ret |
| ; |
| ; RV32IMZB-LABEL: udiv8_constant_add: |
| ; RV32IMZB: # %bb.0: |
| ; RV32IMZB-NEXT: andi a1, a0, 255 |
| ; RV32IMZB-NEXT: sh3add a2, a1, a1 |
| ; RV32IMZB-NEXT: sh2add a1, a2, a1 |
| ; RV32IMZB-NEXT: srli a1, a1, 8 |
| ; RV32IMZB-NEXT: sub a0, a0, a1 |
| ; RV32IMZB-NEXT: slli a0, a0, 24 |
| ; RV32IMZB-NEXT: srli a0, a0, 25 |
| ; RV32IMZB-NEXT: add a0, a0, a1 |
| ; RV32IMZB-NEXT: srli a0, a0, 2 |
| ; RV32IMZB-NEXT: ret |
| ; |
| ; RV64IM-LABEL: udiv8_constant_add: |
| ; RV64IM: # %bb.0: |
| ; RV64IM-NEXT: andi a1, a0, 255 |
| ; RV64IM-NEXT: li a2, 37 |
| ; RV64IM-NEXT: mul a1, a1, a2 |
| ; RV64IM-NEXT: srli a1, a1, 8 |
| ; RV64IM-NEXT: subw a0, a0, a1 |
| ; RV64IM-NEXT: slli a0, a0, 56 |
| ; RV64IM-NEXT: srli a0, a0, 57 |
| ; RV64IM-NEXT: add a0, a0, a1 |
| ; RV64IM-NEXT: srli a0, a0, 2 |
| ; RV64IM-NEXT: ret |
| ; |
| ; RV64IMZB-LABEL: udiv8_constant_add: |
| ; RV64IMZB: # %bb.0: |
| ; RV64IMZB-NEXT: andi a1, a0, 255 |
| ; RV64IMZB-NEXT: sh3add a2, a1, a1 |
| ; RV64IMZB-NEXT: sh2add a1, a2, a1 |
| ; RV64IMZB-NEXT: srli a1, a1, 8 |
| ; RV64IMZB-NEXT: subw a0, a0, a1 |
| ; RV64IMZB-NEXT: slli a0, a0, 56 |
| ; RV64IMZB-NEXT: srli a0, a0, 57 |
| ; RV64IMZB-NEXT: add a0, a0, a1 |
| ; RV64IMZB-NEXT: srli a0, a0, 2 |
| ; RV64IMZB-NEXT: ret |
| %1 = udiv i8 %a, 7 |
| ret i8 %1 |
| } |
| |
| define i16 @udiv16_constant_no_add(i16 %a) nounwind { |
| ; RV32-LABEL: udiv16_constant_no_add: |
| ; RV32: # %bb.0: |
| ; RV32-NEXT: slli a0, a0, 16 |
| ; RV32-NEXT: lui a1, 838864 |
| ; RV32-NEXT: mulhu a0, a0, a1 |
| ; RV32-NEXT: srli a0, a0, 18 |
| ; RV32-NEXT: ret |
| ; |
| ; RV64-LABEL: udiv16_constant_no_add: |
| ; RV64: # %bb.0: |
| ; RV64-NEXT: lui a1, 52429 |
| ; RV64-NEXT: slli a1, a1, 4 |
| ; RV64-NEXT: slli a0, a0, 48 |
| ; RV64-NEXT: mulhu a0, a0, a1 |
| ; RV64-NEXT: srli a0, a0, 18 |
| ; RV64-NEXT: ret |
| %1 = udiv i16 %a, 5 |
| ret i16 %1 |
| } |
| |
| define i16 @udiv16_constant_add(i16 %a) nounwind { |
| ; RV32-LABEL: udiv16_constant_add: |
| ; RV32: # %bb.0: |
| ; RV32-NEXT: slli a1, a0, 16 |
| ; RV32-NEXT: lui a2, 149808 |
| ; RV32-NEXT: mulhu a1, a1, a2 |
| ; RV32-NEXT: srli a1, a1, 16 |
| ; RV32-NEXT: sub a0, a0, a1 |
| ; RV32-NEXT: slli a0, a0, 16 |
| ; RV32-NEXT: srli a0, a0, 17 |
| ; RV32-NEXT: add a0, a0, a1 |
| ; RV32-NEXT: srli a0, a0, 2 |
| ; RV32-NEXT: ret |
| ; |
| ; RV64-LABEL: udiv16_constant_add: |
| ; RV64: # %bb.0: |
| ; RV64-NEXT: slli a1, a0, 48 |
| ; RV64-NEXT: lui a2, 149808 |
| ; RV64-NEXT: mulhu a1, a1, a2 |
| ; RV64-NEXT: srli a1, a1, 16 |
| ; RV64-NEXT: subw a0, a0, a1 |
| ; RV64-NEXT: slli a0, a0, 48 |
| ; RV64-NEXT: srli a0, a0, 49 |
| ; RV64-NEXT: add a0, a0, a1 |
| ; RV64-NEXT: srli a0, a0, 2 |
| ; RV64-NEXT: ret |
| %1 = udiv i16 %a, 7 |
| ret i16 %1 |
| } |
| |
| ; Test the simplest case a srli and an add after the mul. No srai. |
| define i32 @sdiv_constant_no_srai(i32 %a) nounwind { |
| ; RV32-LABEL: sdiv_constant_no_srai: |
| ; RV32: # %bb.0: |
| ; RV32-NEXT: lui a1, 349525 |
| ; RV32-NEXT: addi a1, a1, 1366 |
| ; RV32-NEXT: mulh a0, a0, a1 |
| ; RV32-NEXT: srli a1, a0, 31 |
| ; RV32-NEXT: add a0, a0, a1 |
| ; RV32-NEXT: ret |
| ; |
| ; RV64-LABEL: sdiv_constant_no_srai: |
| ; RV64: # %bb.0: |
| ; RV64-NEXT: sext.w a0, a0 |
| ; RV64-NEXT: lui a1, 349525 |
| ; RV64-NEXT: addiw a1, a1, 1366 |
| ; RV64-NEXT: mul a0, a0, a1 |
| ; RV64-NEXT: srli a1, a0, 63 |
| ; RV64-NEXT: srli a0, a0, 32 |
| ; RV64-NEXT: addw a0, a0, a1 |
| ; RV64-NEXT: ret |
| %1 = sdiv i32 %a, 3 |
| ret i32 %1 |
| } |
| |
| ; This constant requires an srai between the mul and the add. |
| define i32 @sdiv_constant_srai(i32 %a) nounwind { |
| ; RV32-LABEL: sdiv_constant_srai: |
| ; RV32: # %bb.0: |
| ; RV32-NEXT: lui a1, 419430 |
| ; RV32-NEXT: addi a1, a1, 1639 |
| ; RV32-NEXT: mulh a0, a0, a1 |
| ; RV32-NEXT: srli a1, a0, 31 |
| ; RV32-NEXT: srai a0, a0, 1 |
| ; RV32-NEXT: add a0, a0, a1 |
| ; RV32-NEXT: ret |
| ; |
| ; RV64-LABEL: sdiv_constant_srai: |
| ; RV64: # %bb.0: |
| ; RV64-NEXT: sext.w a0, a0 |
| ; RV64-NEXT: lui a1, 419430 |
| ; RV64-NEXT: addiw a1, a1, 1639 |
| ; RV64-NEXT: mul a0, a0, a1 |
| ; RV64-NEXT: srli a1, a0, 63 |
| ; RV64-NEXT: srai a0, a0, 33 |
| ; RV64-NEXT: add a0, a0, a1 |
| ; RV64-NEXT: ret |
| %1 = sdiv i32 %a, 5 |
| ret i32 %1 |
| } |
| |
| ; This constant requires an add and an srai after the mul. |
| define i32 @sdiv_constant_add_srai(i32 %a) nounwind { |
| ; RV32-LABEL: sdiv_constant_add_srai: |
| ; RV32: # %bb.0: |
| ; RV32-NEXT: lui a1, 599186 |
| ; RV32-NEXT: addi a1, a1, 1171 |
| ; RV32-NEXT: mulh a1, a0, a1 |
| ; RV32-NEXT: add a0, a1, a0 |
| ; RV32-NEXT: srli a1, a0, 31 |
| ; RV32-NEXT: srai a0, a0, 2 |
| ; RV32-NEXT: add a0, a0, a1 |
| ; RV32-NEXT: ret |
| ; |
| ; RV64-LABEL: sdiv_constant_add_srai: |
| ; RV64: # %bb.0: |
| ; RV64-NEXT: sext.w a1, a0 |
| ; RV64-NEXT: lui a2, 599186 |
| ; RV64-NEXT: addiw a2, a2, 1171 |
| ; RV64-NEXT: mul a1, a1, a2 |
| ; RV64-NEXT: srli a1, a1, 32 |
| ; RV64-NEXT: add a0, a1, a0 |
| ; RV64-NEXT: srliw a1, a0, 31 |
| ; RV64-NEXT: sraiw a0, a0, 2 |
| ; RV64-NEXT: add a0, a0, a1 |
| ; RV64-NEXT: ret |
| %1 = sdiv i32 %a, 7 |
| ret i32 %1 |
| } |
| |
| ; This constant requires a sub and an srai after the mul. |
| define i32 @sdiv_constant_sub_srai(i32 %a) nounwind { |
| ; RV32-LABEL: sdiv_constant_sub_srai: |
| ; RV32: # %bb.0: |
| ; RV32-NEXT: lui a1, 449390 |
| ; RV32-NEXT: addi a1, a1, -1171 |
| ; RV32-NEXT: mulh a1, a0, a1 |
| ; RV32-NEXT: sub a1, a1, a0 |
| ; RV32-NEXT: srli a0, a1, 31 |
| ; RV32-NEXT: srai a1, a1, 2 |
| ; RV32-NEXT: add a0, a1, a0 |
| ; RV32-NEXT: ret |
| ; |
| ; RV64-LABEL: sdiv_constant_sub_srai: |
| ; RV64: # %bb.0: |
| ; RV64-NEXT: sext.w a1, a0 |
| ; RV64-NEXT: lui a2, 449390 |
| ; RV64-NEXT: addiw a2, a2, -1171 |
| ; RV64-NEXT: mul a1, a1, a2 |
| ; RV64-NEXT: srli a1, a1, 32 |
| ; RV64-NEXT: subw a1, a1, a0 |
| ; RV64-NEXT: srliw a0, a1, 31 |
| ; RV64-NEXT: sraiw a1, a1, 2 |
| ; RV64-NEXT: add a0, a1, a0 |
| ; RV64-NEXT: ret |
| %1 = sdiv i32 %a, -7 |
| ret i32 %1 |
| } |
| |
| define i64 @sdiv64_constant_no_srai(i64 %a) nounwind { |
| ; RV32-LABEL: sdiv64_constant_no_srai: |
| ; RV32: # %bb.0: |
| ; RV32-NEXT: addi sp, sp, -16 |
| ; RV32-NEXT: sw ra, 12(sp) # 4-byte Folded Spill |
| ; RV32-NEXT: li a2, 3 |
| ; RV32-NEXT: li a3, 0 |
| ; RV32-NEXT: call __divdi3 |
| ; RV32-NEXT: lw ra, 12(sp) # 4-byte Folded Reload |
| ; RV32-NEXT: addi sp, sp, 16 |
| ; RV32-NEXT: ret |
| ; |
| ; RV64-LABEL: sdiv64_constant_no_srai: |
| ; RV64: # %bb.0: |
| ; RV64-NEXT: lui a1, %hi(.LCPI12_0) |
| ; RV64-NEXT: ld a1, %lo(.LCPI12_0)(a1) |
| ; RV64-NEXT: mulh a0, a0, a1 |
| ; RV64-NEXT: srli a1, a0, 63 |
| ; RV64-NEXT: add a0, a0, a1 |
| ; RV64-NEXT: ret |
| %1 = sdiv i64 %a, 3 |
| ret i64 %1 |
| } |
| |
| define i64 @sdiv64_constant_srai(i64 %a) nounwind { |
| ; RV32-LABEL: sdiv64_constant_srai: |
| ; RV32: # %bb.0: |
| ; RV32-NEXT: addi sp, sp, -16 |
| ; RV32-NEXT: sw ra, 12(sp) # 4-byte Folded Spill |
| ; RV32-NEXT: li a2, 5 |
| ; RV32-NEXT: li a3, 0 |
| ; RV32-NEXT: call __divdi3 |
| ; RV32-NEXT: lw ra, 12(sp) # 4-byte Folded Reload |
| ; RV32-NEXT: addi sp, sp, 16 |
| ; RV32-NEXT: ret |
| ; |
| ; RV64-LABEL: sdiv64_constant_srai: |
| ; RV64: # %bb.0: |
| ; RV64-NEXT: lui a1, %hi(.LCPI13_0) |
| ; RV64-NEXT: ld a1, %lo(.LCPI13_0)(a1) |
| ; RV64-NEXT: mulh a0, a0, a1 |
| ; RV64-NEXT: srli a1, a0, 63 |
| ; RV64-NEXT: srai a0, a0, 1 |
| ; RV64-NEXT: add a0, a0, a1 |
| ; RV64-NEXT: ret |
| %1 = sdiv i64 %a, 5 |
| ret i64 %1 |
| } |
| |
| define i64 @sdiv64_constant_add_srai(i64 %a) nounwind { |
| ; RV32-LABEL: sdiv64_constant_add_srai: |
| ; RV32: # %bb.0: |
| ; RV32-NEXT: addi sp, sp, -16 |
| ; RV32-NEXT: sw ra, 12(sp) # 4-byte Folded Spill |
| ; RV32-NEXT: li a2, 15 |
| ; RV32-NEXT: li a3, 0 |
| ; RV32-NEXT: call __divdi3 |
| ; RV32-NEXT: lw ra, 12(sp) # 4-byte Folded Reload |
| ; RV32-NEXT: addi sp, sp, 16 |
| ; RV32-NEXT: ret |
| ; |
| ; RV64-LABEL: sdiv64_constant_add_srai: |
| ; RV64: # %bb.0: |
| ; RV64-NEXT: lui a1, 559241 |
| ; RV64-NEXT: addiw a1, a1, -1911 |
| ; RV64-NEXT: slli a2, a1, 32 |
| ; RV64-NEXT: add a1, a1, a2 |
| ; RV64-NEXT: mulh a1, a0, a1 |
| ; RV64-NEXT: add a0, a1, a0 |
| ; RV64-NEXT: srli a1, a0, 63 |
| ; RV64-NEXT: srai a0, a0, 3 |
| ; RV64-NEXT: add a0, a0, a1 |
| ; RV64-NEXT: ret |
| %1 = sdiv i64 %a, 15 |
| ret i64 %1 |
| } |
| |
| define i64 @sdiv64_constant_sub_srai(i64 %a) nounwind { |
| ; RV32-LABEL: sdiv64_constant_sub_srai: |
| ; RV32: # %bb.0: |
| ; RV32-NEXT: addi sp, sp, -16 |
| ; RV32-NEXT: sw ra, 12(sp) # 4-byte Folded Spill |
| ; RV32-NEXT: li a2, -3 |
| ; RV32-NEXT: li a3, -1 |
| ; RV32-NEXT: call __divdi3 |
| ; RV32-NEXT: lw ra, 12(sp) # 4-byte Folded Reload |
| ; RV32-NEXT: addi sp, sp, 16 |
| ; RV32-NEXT: ret |
| ; |
| ; RV64-LABEL: sdiv64_constant_sub_srai: |
| ; RV64: # %bb.0: |
| ; RV64-NEXT: lui a1, 349525 |
| ; RV64-NEXT: addiw a1, a1, 1365 |
| ; RV64-NEXT: slli a2, a1, 32 |
| ; RV64-NEXT: add a1, a1, a2 |
| ; RV64-NEXT: mulh a1, a0, a1 |
| ; RV64-NEXT: sub a1, a1, a0 |
| ; RV64-NEXT: srli a0, a1, 63 |
| ; RV64-NEXT: srai a1, a1, 1 |
| ; RV64-NEXT: add a0, a1, a0 |
| ; RV64-NEXT: ret |
| %1 = sdiv i64 %a, -3 |
| ret i64 %1 |
| } |
| |
| define i8 @sdiv8_constant_no_srai(i8 %a) nounwind { |
| ; RV32IM-LABEL: sdiv8_constant_no_srai: |
| ; RV32IM: # %bb.0: |
| ; RV32IM-NEXT: slli a0, a0, 24 |
| ; RV32IM-NEXT: srai a0, a0, 24 |
| ; RV32IM-NEXT: li a1, 86 |
| ; RV32IM-NEXT: mul a0, a0, a1 |
| ; RV32IM-NEXT: srli a1, a0, 8 |
| ; RV32IM-NEXT: slli a0, a0, 16 |
| ; RV32IM-NEXT: srli a0, a0, 31 |
| ; RV32IM-NEXT: add a0, a1, a0 |
| ; RV32IM-NEXT: ret |
| ; |
| ; RV32IMZB-LABEL: sdiv8_constant_no_srai: |
| ; RV32IMZB: # %bb.0: |
| ; RV32IMZB-NEXT: sext.b a0, a0 |
| ; RV32IMZB-NEXT: li a1, 86 |
| ; RV32IMZB-NEXT: mul a0, a0, a1 |
| ; RV32IMZB-NEXT: srli a1, a0, 8 |
| ; RV32IMZB-NEXT: slli a0, a0, 16 |
| ; RV32IMZB-NEXT: srli a0, a0, 31 |
| ; RV32IMZB-NEXT: add a0, a1, a0 |
| ; RV32IMZB-NEXT: ret |
| ; |
| ; RV64IM-LABEL: sdiv8_constant_no_srai: |
| ; RV64IM: # %bb.0: |
| ; RV64IM-NEXT: slli a0, a0, 56 |
| ; RV64IM-NEXT: srai a0, a0, 56 |
| ; RV64IM-NEXT: li a1, 86 |
| ; RV64IM-NEXT: mul a0, a0, a1 |
| ; RV64IM-NEXT: srli a1, a0, 8 |
| ; RV64IM-NEXT: slli a0, a0, 48 |
| ; RV64IM-NEXT: srli a0, a0, 63 |
| ; RV64IM-NEXT: add a0, a1, a0 |
| ; RV64IM-NEXT: ret |
| ; |
| ; RV64IMZB-LABEL: sdiv8_constant_no_srai: |
| ; RV64IMZB: # %bb.0: |
| ; RV64IMZB-NEXT: sext.b a0, a0 |
| ; RV64IMZB-NEXT: li a1, 86 |
| ; RV64IMZB-NEXT: mul a0, a0, a1 |
| ; RV64IMZB-NEXT: srli a1, a0, 8 |
| ; RV64IMZB-NEXT: slli a0, a0, 48 |
| ; RV64IMZB-NEXT: srli a0, a0, 63 |
| ; RV64IMZB-NEXT: add a0, a1, a0 |
| ; RV64IMZB-NEXT: ret |
| %1 = sdiv i8 %a, 3 |
| ret i8 %1 |
| } |
| |
| define i8 @sdiv8_constant_srai(i8 %a) nounwind { |
| ; RV32IM-LABEL: sdiv8_constant_srai: |
| ; RV32IM: # %bb.0: |
| ; RV32IM-NEXT: slli a0, a0, 24 |
| ; RV32IM-NEXT: srai a0, a0, 24 |
| ; RV32IM-NEXT: li a1, 103 |
| ; RV32IM-NEXT: mul a0, a0, a1 |
| ; RV32IM-NEXT: srai a1, a0, 9 |
| ; RV32IM-NEXT: slli a0, a0, 16 |
| ; RV32IM-NEXT: srli a0, a0, 31 |
| ; RV32IM-NEXT: add a0, a1, a0 |
| ; RV32IM-NEXT: ret |
| ; |
| ; RV32IMZB-LABEL: sdiv8_constant_srai: |
| ; RV32IMZB: # %bb.0: |
| ; RV32IMZB-NEXT: sext.b a0, a0 |
| ; RV32IMZB-NEXT: li a1, 103 |
| ; RV32IMZB-NEXT: mul a0, a0, a1 |
| ; RV32IMZB-NEXT: srai a1, a0, 9 |
| ; RV32IMZB-NEXT: slli a0, a0, 16 |
| ; RV32IMZB-NEXT: srli a0, a0, 31 |
| ; RV32IMZB-NEXT: add a0, a1, a0 |
| ; RV32IMZB-NEXT: ret |
| ; |
| ; RV64IM-LABEL: sdiv8_constant_srai: |
| ; RV64IM: # %bb.0: |
| ; RV64IM-NEXT: slli a0, a0, 56 |
| ; RV64IM-NEXT: srai a0, a0, 56 |
| ; RV64IM-NEXT: li a1, 103 |
| ; RV64IM-NEXT: mul a0, a0, a1 |
| ; RV64IM-NEXT: srai a1, a0, 9 |
| ; RV64IM-NEXT: slli a0, a0, 48 |
| ; RV64IM-NEXT: srli a0, a0, 63 |
| ; RV64IM-NEXT: add a0, a1, a0 |
| ; RV64IM-NEXT: ret |
| ; |
| ; RV64IMZB-LABEL: sdiv8_constant_srai: |
| ; RV64IMZB: # %bb.0: |
| ; RV64IMZB-NEXT: sext.b a0, a0 |
| ; RV64IMZB-NEXT: li a1, 103 |
| ; RV64IMZB-NEXT: mul a0, a0, a1 |
| ; RV64IMZB-NEXT: srai a1, a0, 9 |
| ; RV64IMZB-NEXT: slli a0, a0, 48 |
| ; RV64IMZB-NEXT: srli a0, a0, 63 |
| ; RV64IMZB-NEXT: add a0, a1, a0 |
| ; RV64IMZB-NEXT: ret |
| %1 = sdiv i8 %a, 5 |
| ret i8 %1 |
| } |
| |
| define i8 @sdiv8_constant_add_srai(i8 %a) nounwind { |
| ; RV32IM-LABEL: sdiv8_constant_add_srai: |
| ; RV32IM: # %bb.0: |
| ; RV32IM-NEXT: slli a1, a0, 24 |
| ; RV32IM-NEXT: srai a1, a1, 24 |
| ; RV32IM-NEXT: li a2, -109 |
| ; RV32IM-NEXT: mul a1, a1, a2 |
| ; RV32IM-NEXT: srli a1, a1, 8 |
| ; RV32IM-NEXT: add a0, a1, a0 |
| ; RV32IM-NEXT: slli a0, a0, 24 |
| ; RV32IM-NEXT: srli a1, a0, 31 |
| ; RV32IM-NEXT: srai a0, a0, 26 |
| ; RV32IM-NEXT: add a0, a0, a1 |
| ; RV32IM-NEXT: ret |
| ; |
| ; RV32IMZB-LABEL: sdiv8_constant_add_srai: |
| ; RV32IMZB: # %bb.0: |
| ; RV32IMZB-NEXT: sext.b a1, a0 |
| ; RV32IMZB-NEXT: li a2, -109 |
| ; RV32IMZB-NEXT: mul a1, a1, a2 |
| ; RV32IMZB-NEXT: srli a1, a1, 8 |
| ; RV32IMZB-NEXT: add a0, a1, a0 |
| ; RV32IMZB-NEXT: slli a0, a0, 24 |
| ; RV32IMZB-NEXT: srli a1, a0, 31 |
| ; RV32IMZB-NEXT: srai a0, a0, 26 |
| ; RV32IMZB-NEXT: add a0, a0, a1 |
| ; RV32IMZB-NEXT: ret |
| ; |
| ; RV64IM-LABEL: sdiv8_constant_add_srai: |
| ; RV64IM: # %bb.0: |
| ; RV64IM-NEXT: slli a1, a0, 56 |
| ; RV64IM-NEXT: srai a1, a1, 56 |
| ; RV64IM-NEXT: li a2, -109 |
| ; RV64IM-NEXT: mul a1, a1, a2 |
| ; RV64IM-NEXT: srli a1, a1, 8 |
| ; RV64IM-NEXT: add a0, a1, a0 |
| ; RV64IM-NEXT: slli a0, a0, 56 |
| ; RV64IM-NEXT: srli a1, a0, 63 |
| ; RV64IM-NEXT: srai a0, a0, 58 |
| ; RV64IM-NEXT: add a0, a0, a1 |
| ; RV64IM-NEXT: ret |
| ; |
| ; RV64IMZB-LABEL: sdiv8_constant_add_srai: |
| ; RV64IMZB: # %bb.0: |
| ; RV64IMZB-NEXT: sext.b a1, a0 |
| ; RV64IMZB-NEXT: li a2, -109 |
| ; RV64IMZB-NEXT: mul a1, a1, a2 |
| ; RV64IMZB-NEXT: srli a1, a1, 8 |
| ; RV64IMZB-NEXT: add a0, a1, a0 |
| ; RV64IMZB-NEXT: slli a0, a0, 56 |
| ; RV64IMZB-NEXT: srli a1, a0, 63 |
| ; RV64IMZB-NEXT: srai a0, a0, 58 |
| ; RV64IMZB-NEXT: add a0, a0, a1 |
| ; RV64IMZB-NEXT: ret |
| %1 = sdiv i8 %a, 7 |
| ret i8 %1 |
| } |
| |
| define i8 @sdiv8_constant_sub_srai(i8 %a) nounwind { |
| ; RV32IM-LABEL: sdiv8_constant_sub_srai: |
| ; RV32IM: # %bb.0: |
| ; RV32IM-NEXT: slli a1, a0, 24 |
| ; RV32IM-NEXT: srai a1, a1, 24 |
| ; RV32IM-NEXT: li a2, 109 |
| ; RV32IM-NEXT: mul a1, a1, a2 |
| ; RV32IM-NEXT: srli a1, a1, 8 |
| ; RV32IM-NEXT: sub a1, a1, a0 |
| ; RV32IM-NEXT: slli a1, a1, 24 |
| ; RV32IM-NEXT: srli a0, a1, 31 |
| ; RV32IM-NEXT: srai a1, a1, 26 |
| ; RV32IM-NEXT: add a0, a1, a0 |
| ; RV32IM-NEXT: ret |
| ; |
| ; RV32IMZB-LABEL: sdiv8_constant_sub_srai: |
| ; RV32IMZB: # %bb.0: |
| ; RV32IMZB-NEXT: sext.b a1, a0 |
| ; RV32IMZB-NEXT: li a2, 109 |
| ; RV32IMZB-NEXT: mul a1, a1, a2 |
| ; RV32IMZB-NEXT: srli a1, a1, 8 |
| ; RV32IMZB-NEXT: sub a1, a1, a0 |
| ; RV32IMZB-NEXT: slli a1, a1, 24 |
| ; RV32IMZB-NEXT: srli a0, a1, 31 |
| ; RV32IMZB-NEXT: srai a1, a1, 26 |
| ; RV32IMZB-NEXT: add a0, a1, a0 |
| ; RV32IMZB-NEXT: ret |
| ; |
| ; RV64IM-LABEL: sdiv8_constant_sub_srai: |
| ; RV64IM: # %bb.0: |
| ; RV64IM-NEXT: slli a1, a0, 56 |
| ; RV64IM-NEXT: srai a1, a1, 56 |
| ; RV64IM-NEXT: li a2, 109 |
| ; RV64IM-NEXT: mul a1, a1, a2 |
| ; RV64IM-NEXT: srli a1, a1, 8 |
| ; RV64IM-NEXT: subw a1, a1, a0 |
| ; RV64IM-NEXT: slli a1, a1, 56 |
| ; RV64IM-NEXT: srli a0, a1, 63 |
| ; RV64IM-NEXT: srai a1, a1, 58 |
| ; RV64IM-NEXT: add a0, a1, a0 |
| ; RV64IM-NEXT: ret |
| ; |
| ; RV64IMZB-LABEL: sdiv8_constant_sub_srai: |
| ; RV64IMZB: # %bb.0: |
| ; RV64IMZB-NEXT: sext.b a1, a0 |
| ; RV64IMZB-NEXT: li a2, 109 |
| ; RV64IMZB-NEXT: mul a1, a1, a2 |
| ; RV64IMZB-NEXT: srli a1, a1, 8 |
| ; RV64IMZB-NEXT: subw a1, a1, a0 |
| ; RV64IMZB-NEXT: slli a1, a1, 56 |
| ; RV64IMZB-NEXT: srli a0, a1, 63 |
| ; RV64IMZB-NEXT: srai a1, a1, 58 |
| ; RV64IMZB-NEXT: add a0, a1, a0 |
| ; RV64IMZB-NEXT: ret |
| %1 = sdiv i8 %a, -7 |
| ret i8 %1 |
| } |
| |
| define i16 @sdiv16_constant_no_srai(i16 %a) nounwind { |
| ; RV32IM-LABEL: sdiv16_constant_no_srai: |
| ; RV32IM: # %bb.0: |
| ; RV32IM-NEXT: slli a0, a0, 16 |
| ; RV32IM-NEXT: srai a0, a0, 16 |
| ; RV32IM-NEXT: lui a1, 5 |
| ; RV32IM-NEXT: addi a1, a1, 1366 |
| ; RV32IM-NEXT: mul a0, a0, a1 |
| ; RV32IM-NEXT: srli a1, a0, 31 |
| ; RV32IM-NEXT: srli a0, a0, 16 |
| ; RV32IM-NEXT: add a0, a0, a1 |
| ; RV32IM-NEXT: ret |
| ; |
| ; RV32IMZB-LABEL: sdiv16_constant_no_srai: |
| ; RV32IMZB: # %bb.0: |
| ; RV32IMZB-NEXT: sext.h a0, a0 |
| ; RV32IMZB-NEXT: lui a1, 5 |
| ; RV32IMZB-NEXT: addi a1, a1, 1366 |
| ; RV32IMZB-NEXT: mul a0, a0, a1 |
| ; RV32IMZB-NEXT: srli a1, a0, 31 |
| ; RV32IMZB-NEXT: srli a0, a0, 16 |
| ; RV32IMZB-NEXT: add a0, a0, a1 |
| ; RV32IMZB-NEXT: ret |
| ; |
| ; RV64IM-LABEL: sdiv16_constant_no_srai: |
| ; RV64IM: # %bb.0: |
| ; RV64IM-NEXT: slli a0, a0, 48 |
| ; RV64IM-NEXT: srai a0, a0, 48 |
| ; RV64IM-NEXT: lui a1, 5 |
| ; RV64IM-NEXT: addiw a1, a1, 1366 |
| ; RV64IM-NEXT: mul a0, a0, a1 |
| ; RV64IM-NEXT: srliw a1, a0, 31 |
| ; RV64IM-NEXT: srli a0, a0, 16 |
| ; RV64IM-NEXT: add a0, a0, a1 |
| ; RV64IM-NEXT: ret |
| ; |
| ; RV64IMZB-LABEL: sdiv16_constant_no_srai: |
| ; RV64IMZB: # %bb.0: |
| ; RV64IMZB-NEXT: sext.h a0, a0 |
| ; RV64IMZB-NEXT: lui a1, 5 |
| ; RV64IMZB-NEXT: addiw a1, a1, 1366 |
| ; RV64IMZB-NEXT: mul a0, a0, a1 |
| ; RV64IMZB-NEXT: srliw a1, a0, 31 |
| ; RV64IMZB-NEXT: srli a0, a0, 16 |
| ; RV64IMZB-NEXT: add a0, a0, a1 |
| ; RV64IMZB-NEXT: ret |
| %1 = sdiv i16 %a, 3 |
| ret i16 %1 |
| } |
| |
| define i16 @sdiv16_constant_srai(i16 %a) nounwind { |
| ; RV32IM-LABEL: sdiv16_constant_srai: |
| ; RV32IM: # %bb.0: |
| ; RV32IM-NEXT: slli a0, a0, 16 |
| ; RV32IM-NEXT: srai a0, a0, 16 |
| ; RV32IM-NEXT: lui a1, 6 |
| ; RV32IM-NEXT: addi a1, a1, 1639 |
| ; RV32IM-NEXT: mul a0, a0, a1 |
| ; RV32IM-NEXT: srli a1, a0, 31 |
| ; RV32IM-NEXT: srai a0, a0, 17 |
| ; RV32IM-NEXT: add a0, a0, a1 |
| ; RV32IM-NEXT: ret |
| ; |
| ; RV32IMZB-LABEL: sdiv16_constant_srai: |
| ; RV32IMZB: # %bb.0: |
| ; RV32IMZB-NEXT: sext.h a0, a0 |
| ; RV32IMZB-NEXT: lui a1, 6 |
| ; RV32IMZB-NEXT: addi a1, a1, 1639 |
| ; RV32IMZB-NEXT: mul a0, a0, a1 |
| ; RV32IMZB-NEXT: srli a1, a0, 31 |
| ; RV32IMZB-NEXT: srai a0, a0, 17 |
| ; RV32IMZB-NEXT: add a0, a0, a1 |
| ; RV32IMZB-NEXT: ret |
| ; |
| ; RV64IM-LABEL: sdiv16_constant_srai: |
| ; RV64IM: # %bb.0: |
| ; RV64IM-NEXT: slli a0, a0, 48 |
| ; RV64IM-NEXT: srai a0, a0, 48 |
| ; RV64IM-NEXT: lui a1, 6 |
| ; RV64IM-NEXT: addiw a1, a1, 1639 |
| ; RV64IM-NEXT: mul a0, a0, a1 |
| ; RV64IM-NEXT: srliw a1, a0, 31 |
| ; RV64IM-NEXT: srai a0, a0, 17 |
| ; RV64IM-NEXT: add a0, a0, a1 |
| ; RV64IM-NEXT: ret |
| ; |
| ; RV64IMZB-LABEL: sdiv16_constant_srai: |
| ; RV64IMZB: # %bb.0: |
| ; RV64IMZB-NEXT: sext.h a0, a0 |
| ; RV64IMZB-NEXT: lui a1, 6 |
| ; RV64IMZB-NEXT: addiw a1, a1, 1639 |
| ; RV64IMZB-NEXT: mul a0, a0, a1 |
| ; RV64IMZB-NEXT: srliw a1, a0, 31 |
| ; RV64IMZB-NEXT: srai a0, a0, 17 |
| ; RV64IMZB-NEXT: add a0, a0, a1 |
| ; RV64IMZB-NEXT: ret |
| %1 = sdiv i16 %a, 5 |
| ret i16 %1 |
| } |
| |
| define i16 @sdiv16_constant_add_srai(i16 %a) nounwind { |
| ; RV32IM-LABEL: sdiv16_constant_add_srai: |
| ; RV32IM: # %bb.0: |
| ; RV32IM-NEXT: slli a1, a0, 16 |
| ; RV32IM-NEXT: srai a1, a1, 16 |
| ; RV32IM-NEXT: lui a2, 1048569 |
| ; RV32IM-NEXT: addi a2, a2, -1911 |
| ; RV32IM-NEXT: mul a1, a1, a2 |
| ; RV32IM-NEXT: srli a1, a1, 16 |
| ; RV32IM-NEXT: add a0, a1, a0 |
| ; RV32IM-NEXT: slli a0, a0, 16 |
| ; RV32IM-NEXT: srli a1, a0, 31 |
| ; RV32IM-NEXT: srai a0, a0, 19 |
| ; RV32IM-NEXT: add a0, a0, a1 |
| ; RV32IM-NEXT: ret |
| ; |
| ; RV32IMZB-LABEL: sdiv16_constant_add_srai: |
| ; RV32IMZB: # %bb.0: |
| ; RV32IMZB-NEXT: sext.h a1, a0 |
| ; RV32IMZB-NEXT: lui a2, 1048569 |
| ; RV32IMZB-NEXT: addi a2, a2, -1911 |
| ; RV32IMZB-NEXT: mul a1, a1, a2 |
| ; RV32IMZB-NEXT: srli a1, a1, 16 |
| ; RV32IMZB-NEXT: add a0, a1, a0 |
| ; RV32IMZB-NEXT: slli a0, a0, 16 |
| ; RV32IMZB-NEXT: srli a1, a0, 31 |
| ; RV32IMZB-NEXT: srai a0, a0, 19 |
| ; RV32IMZB-NEXT: add a0, a0, a1 |
| ; RV32IMZB-NEXT: ret |
| ; |
| ; RV64IM-LABEL: sdiv16_constant_add_srai: |
| ; RV64IM: # %bb.0: |
| ; RV64IM-NEXT: slli a1, a0, 48 |
| ; RV64IM-NEXT: srai a1, a1, 48 |
| ; RV64IM-NEXT: lui a2, 1048569 |
| ; RV64IM-NEXT: addiw a2, a2, -1911 |
| ; RV64IM-NEXT: mul a1, a1, a2 |
| ; RV64IM-NEXT: srli a1, a1, 16 |
| ; RV64IM-NEXT: add a0, a1, a0 |
| ; RV64IM-NEXT: slli a0, a0, 48 |
| ; RV64IM-NEXT: srli a1, a0, 63 |
| ; RV64IM-NEXT: srai a0, a0, 51 |
| ; RV64IM-NEXT: add a0, a0, a1 |
| ; RV64IM-NEXT: ret |
| ; |
| ; RV64IMZB-LABEL: sdiv16_constant_add_srai: |
| ; RV64IMZB: # %bb.0: |
| ; RV64IMZB-NEXT: sext.h a1, a0 |
| ; RV64IMZB-NEXT: lui a2, 1048569 |
| ; RV64IMZB-NEXT: addiw a2, a2, -1911 |
| ; RV64IMZB-NEXT: mul a1, a1, a2 |
| ; RV64IMZB-NEXT: srli a1, a1, 16 |
| ; RV64IMZB-NEXT: add a0, a1, a0 |
| ; RV64IMZB-NEXT: slli a0, a0, 48 |
| ; RV64IMZB-NEXT: srli a1, a0, 63 |
| ; RV64IMZB-NEXT: srai a0, a0, 51 |
| ; RV64IMZB-NEXT: add a0, a0, a1 |
| ; RV64IMZB-NEXT: ret |
| %1 = sdiv i16 %a, 15 |
| ret i16 %1 |
| } |
| |
| define i16 @sdiv16_constant_sub_srai(i16 %a) nounwind { |
| ; RV32IM-LABEL: sdiv16_constant_sub_srai: |
| ; RV32IM: # %bb.0: |
| ; RV32IM-NEXT: slli a1, a0, 16 |
| ; RV32IM-NEXT: srai a1, a1, 16 |
| ; RV32IM-NEXT: lui a2, 7 |
| ; RV32IM-NEXT: addi a2, a2, 1911 |
| ; RV32IM-NEXT: mul a1, a1, a2 |
| ; RV32IM-NEXT: srli a1, a1, 16 |
| ; RV32IM-NEXT: sub a1, a1, a0 |
| ; RV32IM-NEXT: slli a1, a1, 16 |
| ; RV32IM-NEXT: srli a0, a1, 31 |
| ; RV32IM-NEXT: srai a1, a1, 19 |
| ; RV32IM-NEXT: add a0, a1, a0 |
| ; RV32IM-NEXT: ret |
| ; |
| ; RV32IMZB-LABEL: sdiv16_constant_sub_srai: |
| ; RV32IMZB: # %bb.0: |
| ; RV32IMZB-NEXT: sext.h a1, a0 |
| ; RV32IMZB-NEXT: lui a2, 7 |
| ; RV32IMZB-NEXT: addi a2, a2, 1911 |
| ; RV32IMZB-NEXT: mul a1, a1, a2 |
| ; RV32IMZB-NEXT: srli a1, a1, 16 |
| ; RV32IMZB-NEXT: sub a1, a1, a0 |
| ; RV32IMZB-NEXT: slli a1, a1, 16 |
| ; RV32IMZB-NEXT: srli a0, a1, 31 |
| ; RV32IMZB-NEXT: srai a1, a1, 19 |
| ; RV32IMZB-NEXT: add a0, a1, a0 |
| ; RV32IMZB-NEXT: ret |
| ; |
| ; RV64IM-LABEL: sdiv16_constant_sub_srai: |
| ; RV64IM: # %bb.0: |
| ; RV64IM-NEXT: slli a1, a0, 48 |
| ; RV64IM-NEXT: srai a1, a1, 48 |
| ; RV64IM-NEXT: lui a2, 7 |
| ; RV64IM-NEXT: addiw a2, a2, 1911 |
| ; RV64IM-NEXT: mul a1, a1, a2 |
| ; RV64IM-NEXT: srli a1, a1, 16 |
| ; RV64IM-NEXT: subw a1, a1, a0 |
| ; RV64IM-NEXT: slli a1, a1, 48 |
| ; RV64IM-NEXT: srli a0, a1, 63 |
| ; RV64IM-NEXT: srai a1, a1, 51 |
| ; RV64IM-NEXT: add a0, a1, a0 |
| ; RV64IM-NEXT: ret |
| ; |
| ; RV64IMZB-LABEL: sdiv16_constant_sub_srai: |
| ; RV64IMZB: # %bb.0: |
| ; RV64IMZB-NEXT: sext.h a1, a0 |
| ; RV64IMZB-NEXT: lui a2, 7 |
| ; RV64IMZB-NEXT: addiw a2, a2, 1911 |
| ; RV64IMZB-NEXT: mul a1, a1, a2 |
| ; RV64IMZB-NEXT: srli a1, a1, 16 |
| ; RV64IMZB-NEXT: subw a1, a1, a0 |
| ; RV64IMZB-NEXT: slli a1, a1, 48 |
| ; RV64IMZB-NEXT: srli a0, a1, 63 |
| ; RV64IMZB-NEXT: srai a1, a1, 51 |
| ; RV64IMZB-NEXT: add a0, a1, a0 |
| ; RV64IMZB-NEXT: ret |
| %1 = sdiv i16 %a, -15 |
| ret i16 %1 |
| } |
