| ; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py |
| ; RUN: llc -mtriple=riscv64 -mattr=+m -verify-machineinstrs < %s \ |
| ; RUN: | FileCheck -check-prefixes=NO-PREFER-W-INST %s |
| ; RUN: llc -mtriple=riscv64 -mattr=+m -riscv-disable-strip-w-suffix -verify-machineinstrs < %s \ |
| ; RUN: | FileCheck -check-prefixes=NO-STRIP %s |
| ; RUN: llc -mtriple=riscv64 -mattr=+m,+prefer-w-inst -verify-machineinstrs < %s \ |
| ; RUN: | FileCheck -check-prefixes=PREFER-W-INST %s |
| |
| define i32 @addiw(i32 %a) { |
| ; NO-PREFER-W-INST-LABEL: addiw: |
| ; NO-PREFER-W-INST: # %bb.0: |
| ; NO-PREFER-W-INST-NEXT: lui a1, 1 |
| ; NO-PREFER-W-INST-NEXT: addi a1, a1, -1 |
| ; NO-PREFER-W-INST-NEXT: addw a0, a0, a1 |
| ; NO-PREFER-W-INST-NEXT: ret |
| ; |
| ; NO-STRIP-LABEL: addiw: |
| ; NO-STRIP: # %bb.0: |
| ; NO-STRIP-NEXT: lui a1, 1 |
| ; NO-STRIP-NEXT: addiw a1, a1, -1 |
| ; NO-STRIP-NEXT: addw a0, a0, a1 |
| ; NO-STRIP-NEXT: ret |
| ; |
| ; PREFER-W-INST-LABEL: addiw: |
| ; PREFER-W-INST: # %bb.0: |
| ; PREFER-W-INST-NEXT: lui a1, 1 |
| ; PREFER-W-INST-NEXT: addiw a1, a1, -1 |
| ; PREFER-W-INST-NEXT: addw a0, a0, a1 |
| ; PREFER-W-INST-NEXT: ret |
| %ret = add i32 %a, 4095 |
| ret i32 %ret |
| } |
| |
| define i32 @addw(i32 %a, i32 %b) { |
| ; NO-PREFER-W-INST-LABEL: addw: |
| ; NO-PREFER-W-INST: # %bb.0: |
| ; NO-PREFER-W-INST-NEXT: add a0, a0, a1 |
| ; NO-PREFER-W-INST-NEXT: addiw a0, a0, 1024 |
| ; NO-PREFER-W-INST-NEXT: ret |
| ; |
| ; NO-STRIP-LABEL: addw: |
| ; NO-STRIP: # %bb.0: |
| ; NO-STRIP-NEXT: addw a0, a0, a1 |
| ; NO-STRIP-NEXT: addiw a0, a0, 1024 |
| ; NO-STRIP-NEXT: ret |
| ; |
| ; PREFER-W-INST-LABEL: addw: |
| ; PREFER-W-INST: # %bb.0: |
| ; PREFER-W-INST-NEXT: addw a0, a0, a1 |
| ; PREFER-W-INST-NEXT: addiw a0, a0, 1024 |
| ; PREFER-W-INST-NEXT: ret |
| %add = add i32 %a, %b |
| %ret = add i32 %add, 1024 |
| ret i32 %ret |
| } |
| |
| define i32 @mulw(i32 %a, i32 %b) { |
| ; NO-PREFER-W-INST-LABEL: mulw: |
| ; NO-PREFER-W-INST: # %bb.0: |
| ; NO-PREFER-W-INST-NEXT: mul a1, a0, a1 |
| ; NO-PREFER-W-INST-NEXT: mul a0, a0, a1 |
| ; NO-PREFER-W-INST-NEXT: addiw a0, a0, 1024 |
| ; NO-PREFER-W-INST-NEXT: ret |
| ; |
| ; NO-STRIP-LABEL: mulw: |
| ; NO-STRIP: # %bb.0: |
| ; NO-STRIP-NEXT: mulw a1, a0, a1 |
| ; NO-STRIP-NEXT: mulw a0, a0, a1 |
| ; NO-STRIP-NEXT: addiw a0, a0, 1024 |
| ; NO-STRIP-NEXT: ret |
| ; |
| ; PREFER-W-INST-LABEL: mulw: |
| ; PREFER-W-INST: # %bb.0: |
| ; PREFER-W-INST-NEXT: mulw a1, a0, a1 |
| ; PREFER-W-INST-NEXT: mulw a0, a0, a1 |
| ; PREFER-W-INST-NEXT: addiw a0, a0, 1024 |
| ; PREFER-W-INST-NEXT: ret |
| %mul1 = mul i32 %a, %b |
| %mul = mul i32 %a, %mul1 |
| %ret = add i32 %mul, 1024 |
| ret i32 %ret |
| } |
| |
| define i32 @slliw(i32 %a) { |
| ; NO-PREFER-W-INST-LABEL: slliw: |
| ; NO-PREFER-W-INST: # %bb.0: |
| ; NO-PREFER-W-INST-NEXT: slli a0, a0, 1 |
| ; NO-PREFER-W-INST-NEXT: addiw a0, a0, 1024 |
| ; NO-PREFER-W-INST-NEXT: ret |
| ; |
| ; NO-STRIP-LABEL: slliw: |
| ; NO-STRIP: # %bb.0: |
| ; NO-STRIP-NEXT: slliw a0, a0, 1 |
| ; NO-STRIP-NEXT: addiw a0, a0, 1024 |
| ; NO-STRIP-NEXT: ret |
| ; |
| ; PREFER-W-INST-LABEL: slliw: |
| ; PREFER-W-INST: # %bb.0: |
| ; PREFER-W-INST-NEXT: slliw a0, a0, 1 |
| ; PREFER-W-INST-NEXT: addiw a0, a0, 1024 |
| ; PREFER-W-INST-NEXT: ret |
| %shl = shl i32 %a, 1 |
| %ret = add i32 %shl, 1024 |
| ret i32 %ret |
| } |