469 lines
13 KiB
LLVM
469 lines
13 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
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; RUN: llc -mtriple=riscv32 -verify-machineinstrs < %s \
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; RUN: | FileCheck -check-prefix=RV32I %s
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; RUN: llc -mtriple=riscv32 -mattr=+m -verify-machineinstrs < %s \
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; RUN: | FileCheck -check-prefix=RV32IM %s
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; RUN: llc -mtriple=riscv64 -verify-machineinstrs < %s \
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; RUN: | FileCheck -check-prefix=RV64I %s
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; RUN: llc -mtriple=riscv64 -mattr=+m -verify-machineinstrs < %s \
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; RUN: | FileCheck -check-prefix=RV64IM %s
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define i32 @udiv(i32 %a, i32 %b) nounwind {
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; RV32I-LABEL: udiv:
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; RV32I: # %bb.0:
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; RV32I-NEXT: addi sp, sp, -16
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; RV32I-NEXT: sw ra, 12(sp) # 4-byte Folded Spill
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; RV32I-NEXT: call __udivsi3@plt
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; RV32I-NEXT: lw ra, 12(sp) # 4-byte Folded Reload
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; RV32I-NEXT: addi sp, sp, 16
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; RV32I-NEXT: ret
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;
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; RV32IM-LABEL: udiv:
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; RV32IM: # %bb.0:
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; RV32IM-NEXT: divu a0, a0, a1
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; RV32IM-NEXT: ret
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;
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; RV64I-LABEL: udiv:
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; RV64I: # %bb.0:
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; RV64I-NEXT: addi sp, sp, -16
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; RV64I-NEXT: sd ra, 8(sp) # 8-byte Folded Spill
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; RV64I-NEXT: slli a0, a0, 32
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; RV64I-NEXT: srli a0, a0, 32
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; RV64I-NEXT: slli a1, a1, 32
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; RV64I-NEXT: srli a1, a1, 32
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; RV64I-NEXT: call __udivdi3@plt
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; RV64I-NEXT: ld ra, 8(sp) # 8-byte Folded Reload
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; RV64I-NEXT: addi sp, sp, 16
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; RV64I-NEXT: ret
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;
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; RV64IM-LABEL: udiv:
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; RV64IM: # %bb.0:
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; RV64IM-NEXT: divuw a0, a0, a1
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; RV64IM-NEXT: ret
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%1 = udiv i32 %a, %b
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ret i32 %1
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}
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define i32 @udiv_constant(i32 %a) nounwind {
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; RV32I-LABEL: udiv_constant:
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; RV32I: # %bb.0:
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; RV32I-NEXT: addi sp, sp, -16
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; RV32I-NEXT: sw ra, 12(sp) # 4-byte Folded Spill
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; RV32I-NEXT: addi a1, zero, 5
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; RV32I-NEXT: call __udivsi3@plt
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; RV32I-NEXT: lw ra, 12(sp) # 4-byte Folded Reload
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; RV32I-NEXT: addi sp, sp, 16
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; RV32I-NEXT: ret
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;
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; RV32IM-LABEL: udiv_constant:
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; RV32IM: # %bb.0:
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; RV32IM-NEXT: lui a1, 838861
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; RV32IM-NEXT: addi a1, a1, -819
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; RV32IM-NEXT: mulhu a0, a0, a1
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; RV32IM-NEXT: srli a0, a0, 2
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; RV32IM-NEXT: ret
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;
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; RV64I-LABEL: udiv_constant:
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; RV64I: # %bb.0:
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; RV64I-NEXT: addi sp, sp, -16
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; RV64I-NEXT: sd ra, 8(sp) # 8-byte Folded Spill
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; RV64I-NEXT: slli a0, a0, 32
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; RV64I-NEXT: srli a0, a0, 32
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; RV64I-NEXT: addi a1, zero, 5
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; RV64I-NEXT: call __udivdi3@plt
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; RV64I-NEXT: ld ra, 8(sp) # 8-byte Folded Reload
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; RV64I-NEXT: addi sp, sp, 16
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; RV64I-NEXT: ret
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;
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; RV64IM-LABEL: udiv_constant:
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; RV64IM: # %bb.0:
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; RV64IM-NEXT: slli a0, a0, 32
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; RV64IM-NEXT: srli a0, a0, 32
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; RV64IM-NEXT: lui a1, 1035469
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; RV64IM-NEXT: addiw a1, a1, -819
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; RV64IM-NEXT: slli a1, a1, 12
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; RV64IM-NEXT: addi a1, a1, -819
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; RV64IM-NEXT: slli a1, a1, 12
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; RV64IM-NEXT: addi a1, a1, -819
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; RV64IM-NEXT: slli a1, a1, 12
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; RV64IM-NEXT: addi a1, a1, -819
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; RV64IM-NEXT: mulhu a0, a0, a1
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; RV64IM-NEXT: srli a0, a0, 2
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; RV64IM-NEXT: ret
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%1 = udiv i32 %a, 5
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ret i32 %1
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}
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define i32 @udiv_pow2(i32 %a) nounwind {
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; RV32I-LABEL: udiv_pow2:
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; RV32I: # %bb.0:
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; RV32I-NEXT: srli a0, a0, 3
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; RV32I-NEXT: ret
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;
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; RV32IM-LABEL: udiv_pow2:
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; RV32IM: # %bb.0:
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; RV32IM-NEXT: srli a0, a0, 3
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; RV32IM-NEXT: ret
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;
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; RV64I-LABEL: udiv_pow2:
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; RV64I: # %bb.0:
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; RV64I-NEXT: srliw a0, a0, 3
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; RV64I-NEXT: ret
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;
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; RV64IM-LABEL: udiv_pow2:
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; RV64IM: # %bb.0:
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; RV64IM-NEXT: srliw a0, a0, 3
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; RV64IM-NEXT: ret
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%1 = udiv i32 %a, 8
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ret i32 %1
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}
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define i64 @udiv64(i64 %a, i64 %b) nounwind {
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; RV32I-LABEL: udiv64:
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; RV32I: # %bb.0:
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; RV32I-NEXT: addi sp, sp, -16
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; RV32I-NEXT: sw ra, 12(sp) # 4-byte Folded Spill
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; RV32I-NEXT: call __udivdi3@plt
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; RV32I-NEXT: lw ra, 12(sp) # 4-byte Folded Reload
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; RV32I-NEXT: addi sp, sp, 16
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; RV32I-NEXT: ret
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;
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; RV32IM-LABEL: udiv64:
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; RV32IM: # %bb.0:
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; RV32IM-NEXT: addi sp, sp, -16
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; RV32IM-NEXT: sw ra, 12(sp) # 4-byte Folded Spill
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; RV32IM-NEXT: call __udivdi3@plt
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; RV32IM-NEXT: lw ra, 12(sp) # 4-byte Folded Reload
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; RV32IM-NEXT: addi sp, sp, 16
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; RV32IM-NEXT: ret
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;
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; RV64I-LABEL: udiv64:
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; RV64I: # %bb.0:
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; RV64I-NEXT: addi sp, sp, -16
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; RV64I-NEXT: sd ra, 8(sp) # 8-byte Folded Spill
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; RV64I-NEXT: call __udivdi3@plt
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; RV64I-NEXT: ld ra, 8(sp) # 8-byte Folded Reload
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; RV64I-NEXT: addi sp, sp, 16
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; RV64I-NEXT: ret
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;
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; RV64IM-LABEL: udiv64:
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; RV64IM: # %bb.0:
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; RV64IM-NEXT: divu a0, a0, a1
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; RV64IM-NEXT: ret
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%1 = udiv i64 %a, %b
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ret i64 %1
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}
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define i64 @udiv64_constant(i64 %a) nounwind {
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; RV32I-LABEL: udiv64_constant:
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; RV32I: # %bb.0:
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; RV32I-NEXT: addi sp, sp, -16
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; RV32I-NEXT: sw ra, 12(sp) # 4-byte Folded Spill
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; RV32I-NEXT: addi a2, zero, 5
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; RV32I-NEXT: mv a3, zero
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; RV32I-NEXT: call __udivdi3@plt
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; RV32I-NEXT: lw ra, 12(sp) # 4-byte Folded Reload
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; RV32I-NEXT: addi sp, sp, 16
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; RV32I-NEXT: ret
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;
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; RV32IM-LABEL: udiv64_constant:
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; RV32IM: # %bb.0:
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; RV32IM-NEXT: addi sp, sp, -16
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; RV32IM-NEXT: sw ra, 12(sp) # 4-byte Folded Spill
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; RV32IM-NEXT: addi a2, zero, 5
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; RV32IM-NEXT: mv a3, zero
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; RV32IM-NEXT: call __udivdi3@plt
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; RV32IM-NEXT: lw ra, 12(sp) # 4-byte Folded Reload
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; RV32IM-NEXT: addi sp, sp, 16
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; RV32IM-NEXT: ret
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;
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; RV64I-LABEL: udiv64_constant:
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; RV64I: # %bb.0:
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; RV64I-NEXT: addi sp, sp, -16
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; RV64I-NEXT: sd ra, 8(sp) # 8-byte Folded Spill
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; RV64I-NEXT: addi a1, zero, 5
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; RV64I-NEXT: call __udivdi3@plt
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; RV64I-NEXT: ld ra, 8(sp) # 8-byte Folded Reload
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; RV64I-NEXT: addi sp, sp, 16
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; RV64I-NEXT: ret
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;
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; RV64IM-LABEL: udiv64_constant:
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; RV64IM: # %bb.0:
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; RV64IM-NEXT: lui a1, 1035469
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; RV64IM-NEXT: addiw a1, a1, -819
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; RV64IM-NEXT: slli a1, a1, 12
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; RV64IM-NEXT: addi a1, a1, -819
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; RV64IM-NEXT: slli a1, a1, 12
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; RV64IM-NEXT: addi a1, a1, -819
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; RV64IM-NEXT: slli a1, a1, 12
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; RV64IM-NEXT: addi a1, a1, -819
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; RV64IM-NEXT: mulhu a0, a0, a1
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; RV64IM-NEXT: srli a0, a0, 2
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; RV64IM-NEXT: ret
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%1 = udiv i64 %a, 5
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ret i64 %1
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}
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define i32 @sdiv(i32 %a, i32 %b) nounwind {
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; RV32I-LABEL: sdiv:
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; RV32I: # %bb.0:
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; RV32I-NEXT: addi sp, sp, -16
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; RV32I-NEXT: sw ra, 12(sp) # 4-byte Folded Spill
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; RV32I-NEXT: call __divsi3@plt
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; RV32I-NEXT: lw ra, 12(sp) # 4-byte Folded Reload
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; RV32I-NEXT: addi sp, sp, 16
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; RV32I-NEXT: ret
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;
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; RV32IM-LABEL: sdiv:
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; RV32IM: # %bb.0:
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; RV32IM-NEXT: div a0, a0, a1
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; RV32IM-NEXT: ret
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;
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; RV64I-LABEL: sdiv:
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; RV64I: # %bb.0:
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; RV64I-NEXT: addi sp, sp, -16
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; RV64I-NEXT: sd ra, 8(sp) # 8-byte Folded Spill
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; RV64I-NEXT: sext.w a0, a0
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; RV64I-NEXT: sext.w a1, a1
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; RV64I-NEXT: call __divdi3@plt
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; RV64I-NEXT: ld ra, 8(sp) # 8-byte Folded Reload
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; RV64I-NEXT: addi sp, sp, 16
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; RV64I-NEXT: ret
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;
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; RV64IM-LABEL: sdiv:
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; RV64IM: # %bb.0:
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; RV64IM-NEXT: divw a0, a0, a1
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; RV64IM-NEXT: ret
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%1 = sdiv i32 %a, %b
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ret i32 %1
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}
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define i32 @sdiv_constant(i32 %a) nounwind {
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; RV32I-LABEL: sdiv_constant:
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; RV32I: # %bb.0:
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; RV32I-NEXT: addi sp, sp, -16
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; RV32I-NEXT: sw ra, 12(sp) # 4-byte Folded Spill
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; RV32I-NEXT: addi a1, zero, 5
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; RV32I-NEXT: call __divsi3@plt
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; RV32I-NEXT: lw ra, 12(sp) # 4-byte Folded Reload
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; RV32I-NEXT: addi sp, sp, 16
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; RV32I-NEXT: ret
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;
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; RV32IM-LABEL: sdiv_constant:
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; RV32IM: # %bb.0:
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; RV32IM-NEXT: lui a1, 419430
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; RV32IM-NEXT: addi a1, a1, 1639
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; RV32IM-NEXT: mulh a0, a0, a1
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; RV32IM-NEXT: srli a1, a0, 31
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; RV32IM-NEXT: srai a0, a0, 1
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; RV32IM-NEXT: add a0, a0, a1
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; RV32IM-NEXT: ret
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;
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; RV64I-LABEL: sdiv_constant:
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; RV64I: # %bb.0:
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; RV64I-NEXT: addi sp, sp, -16
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; RV64I-NEXT: sd ra, 8(sp) # 8-byte Folded Spill
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; RV64I-NEXT: sext.w a0, a0
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; RV64I-NEXT: addi a1, zero, 5
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; RV64I-NEXT: call __divdi3@plt
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; RV64I-NEXT: ld ra, 8(sp) # 8-byte Folded Reload
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; RV64I-NEXT: addi sp, sp, 16
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; RV64I-NEXT: ret
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;
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; RV64IM-LABEL: sdiv_constant:
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; RV64IM: # %bb.0:
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; RV64IM-NEXT: sext.w a0, a0
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; RV64IM-NEXT: lui a1, 13107
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; RV64IM-NEXT: addiw a1, a1, 819
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; RV64IM-NEXT: slli a1, a1, 12
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; RV64IM-NEXT: addi a1, a1, 819
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; RV64IM-NEXT: slli a1, a1, 12
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; RV64IM-NEXT: addi a1, a1, 819
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; RV64IM-NEXT: slli a1, a1, 13
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; RV64IM-NEXT: addi a1, a1, 1639
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; RV64IM-NEXT: mulh a0, a0, a1
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; RV64IM-NEXT: srli a1, a0, 63
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; RV64IM-NEXT: srai a0, a0, 1
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; RV64IM-NEXT: add a0, a0, a1
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; RV64IM-NEXT: ret
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%1 = sdiv i32 %a, 5
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ret i32 %1
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}
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define i32 @sdiv_pow2(i32 %a) nounwind {
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; RV32I-LABEL: sdiv_pow2:
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; RV32I: # %bb.0:
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; RV32I-NEXT: srai a1, a0, 31
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; RV32I-NEXT: srli a1, a1, 29
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; RV32I-NEXT: add a0, a0, a1
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; RV32I-NEXT: srai a0, a0, 3
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; RV32I-NEXT: ret
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;
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; RV32IM-LABEL: sdiv_pow2:
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; RV32IM: # %bb.0:
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; RV32IM-NEXT: srai a1, a0, 31
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; RV32IM-NEXT: srli a1, a1, 29
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; RV32IM-NEXT: add a0, a0, a1
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; RV32IM-NEXT: srai a0, a0, 3
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; RV32IM-NEXT: ret
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;
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; RV64I-LABEL: sdiv_pow2:
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; RV64I: # %bb.0:
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; RV64I-NEXT: sext.w a1, a0
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; RV64I-NEXT: srli a1, a1, 60
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; RV64I-NEXT: andi a1, a1, 7
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; RV64I-NEXT: add a0, a0, a1
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; RV64I-NEXT: sraiw a0, a0, 3
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; RV64I-NEXT: ret
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;
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; RV64IM-LABEL: sdiv_pow2:
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; RV64IM: # %bb.0:
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; RV64IM-NEXT: sext.w a1, a0
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; RV64IM-NEXT: srli a1, a1, 60
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; RV64IM-NEXT: andi a1, a1, 7
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; RV64IM-NEXT: add a0, a0, a1
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; RV64IM-NEXT: sraiw a0, a0, 3
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; RV64IM-NEXT: ret
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%1 = sdiv i32 %a, 8
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ret i32 %1
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}
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define i64 @sdiv64(i64 %a, i64 %b) nounwind {
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; RV32I-LABEL: sdiv64:
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; RV32I: # %bb.0:
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; RV32I-NEXT: addi sp, sp, -16
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; RV32I-NEXT: sw ra, 12(sp) # 4-byte Folded Spill
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; RV32I-NEXT: call __divdi3@plt
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; RV32I-NEXT: lw ra, 12(sp) # 4-byte Folded Reload
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; RV32I-NEXT: addi sp, sp, 16
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; RV32I-NEXT: ret
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;
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; RV32IM-LABEL: sdiv64:
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; RV32IM: # %bb.0:
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; RV32IM-NEXT: addi sp, sp, -16
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; RV32IM-NEXT: sw ra, 12(sp) # 4-byte Folded Spill
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; RV32IM-NEXT: call __divdi3@plt
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; RV32IM-NEXT: lw ra, 12(sp) # 4-byte Folded Reload
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; RV32IM-NEXT: addi sp, sp, 16
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; RV32IM-NEXT: ret
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;
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; RV64I-LABEL: sdiv64:
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; RV64I: # %bb.0:
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; RV64I-NEXT: addi sp, sp, -16
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; RV64I-NEXT: sd ra, 8(sp) # 8-byte Folded Spill
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; RV64I-NEXT: call __divdi3@plt
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; RV64I-NEXT: ld ra, 8(sp) # 8-byte Folded Reload
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; RV64I-NEXT: addi sp, sp, 16
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; RV64I-NEXT: ret
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;
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; RV64IM-LABEL: sdiv64:
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; RV64IM: # %bb.0:
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; RV64IM-NEXT: div a0, a0, a1
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; RV64IM-NEXT: ret
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%1 = sdiv i64 %a, %b
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ret i64 %1
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}
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define i64 @sdiv64_constant(i64 %a) nounwind {
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; RV32I-LABEL: sdiv64_constant:
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; RV32I: # %bb.0:
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; RV32I-NEXT: addi sp, sp, -16
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; RV32I-NEXT: sw ra, 12(sp) # 4-byte Folded Spill
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; RV32I-NEXT: addi a2, zero, 5
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; RV32I-NEXT: mv a3, zero
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; RV32I-NEXT: call __divdi3@plt
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; RV32I-NEXT: lw ra, 12(sp) # 4-byte Folded Reload
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; RV32I-NEXT: addi sp, sp, 16
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; RV32I-NEXT: ret
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;
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; RV32IM-LABEL: sdiv64_constant:
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; RV32IM: # %bb.0:
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; RV32IM-NEXT: addi sp, sp, -16
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; RV32IM-NEXT: sw ra, 12(sp) # 4-byte Folded Spill
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; RV32IM-NEXT: addi a2, zero, 5
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; RV32IM-NEXT: mv a3, zero
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; RV32IM-NEXT: call __divdi3@plt
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; RV32IM-NEXT: lw ra, 12(sp) # 4-byte Folded Reload
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; RV32IM-NEXT: addi sp, sp, 16
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; RV32IM-NEXT: ret
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;
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; RV64I-LABEL: sdiv64_constant:
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; RV64I: # %bb.0:
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; RV64I-NEXT: addi sp, sp, -16
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; RV64I-NEXT: sd ra, 8(sp) # 8-byte Folded Spill
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|
; RV64I-NEXT: addi a1, zero, 5
|
|
; RV64I-NEXT: call __divdi3@plt
|
|
; RV64I-NEXT: ld ra, 8(sp) # 8-byte Folded Reload
|
|
; RV64I-NEXT: addi sp, sp, 16
|
|
; RV64I-NEXT: ret
|
|
;
|
|
; RV64IM-LABEL: sdiv64_constant:
|
|
; RV64IM: # %bb.0:
|
|
; RV64IM-NEXT: lui a1, 13107
|
|
; RV64IM-NEXT: addiw a1, a1, 819
|
|
; RV64IM-NEXT: slli a1, a1, 12
|
|
; RV64IM-NEXT: addi a1, a1, 819
|
|
; RV64IM-NEXT: slli a1, a1, 12
|
|
; RV64IM-NEXT: addi a1, a1, 819
|
|
; RV64IM-NEXT: slli a1, a1, 13
|
|
; RV64IM-NEXT: addi a1, a1, 1639
|
|
; RV64IM-NEXT: mulh a0, a0, a1
|
|
; RV64IM-NEXT: srli a1, a0, 63
|
|
; RV64IM-NEXT: srai a0, a0, 1
|
|
; RV64IM-NEXT: add a0, a0, a1
|
|
; RV64IM-NEXT: ret
|
|
%1 = sdiv i64 %a, 5
|
|
ret i64 %1
|
|
}
|
|
|
|
; Although this sdiv has two sexti32 operands, it shouldn't compile to divw on
|
|
; RV64M as that wouldn't produce the correct result for e.g. INT_MIN/-1.
|
|
|
|
define i64 @sdiv64_sext_operands(i32 %a, i32 %b) nounwind {
|
|
; RV32I-LABEL: sdiv64_sext_operands:
|
|
; RV32I: # %bb.0:
|
|
; RV32I-NEXT: addi sp, sp, -16
|
|
; RV32I-NEXT: sw ra, 12(sp) # 4-byte Folded Spill
|
|
; RV32I-NEXT: mv a2, a1
|
|
; RV32I-NEXT: srai a1, a0, 31
|
|
; RV32I-NEXT: srai a3, a2, 31
|
|
; RV32I-NEXT: call __divdi3@plt
|
|
; RV32I-NEXT: lw ra, 12(sp) # 4-byte Folded Reload
|
|
; RV32I-NEXT: addi sp, sp, 16
|
|
; RV32I-NEXT: ret
|
|
;
|
|
; RV32IM-LABEL: sdiv64_sext_operands:
|
|
; RV32IM: # %bb.0:
|
|
; RV32IM-NEXT: addi sp, sp, -16
|
|
; RV32IM-NEXT: sw ra, 12(sp) # 4-byte Folded Spill
|
|
; RV32IM-NEXT: mv a2, a1
|
|
; RV32IM-NEXT: srai a1, a0, 31
|
|
; RV32IM-NEXT: srai a3, a2, 31
|
|
; RV32IM-NEXT: call __divdi3@plt
|
|
; RV32IM-NEXT: lw ra, 12(sp) # 4-byte Folded Reload
|
|
; RV32IM-NEXT: addi sp, sp, 16
|
|
; RV32IM-NEXT: ret
|
|
;
|
|
; RV64I-LABEL: sdiv64_sext_operands:
|
|
; RV64I: # %bb.0:
|
|
; RV64I-NEXT: addi sp, sp, -16
|
|
; RV64I-NEXT: sd ra, 8(sp) # 8-byte Folded Spill
|
|
; RV64I-NEXT: sext.w a0, a0
|
|
; RV64I-NEXT: sext.w a1, a1
|
|
; RV64I-NEXT: call __divdi3@plt
|
|
; RV64I-NEXT: ld ra, 8(sp) # 8-byte Folded Reload
|
|
; RV64I-NEXT: addi sp, sp, 16
|
|
; RV64I-NEXT: ret
|
|
;
|
|
; RV64IM-LABEL: sdiv64_sext_operands:
|
|
; RV64IM: # %bb.0:
|
|
; RV64IM-NEXT: sext.w a0, a0
|
|
; RV64IM-NEXT: sext.w a1, a1
|
|
; RV64IM-NEXT: div a0, a0, a1
|
|
; RV64IM-NEXT: ret
|
|
%1 = sext i32 %a to i64
|
|
%2 = sext i32 %b to i64
|
|
%3 = sdiv i64 %1, %2
|
|
ret i64 %3
|
|
}
|