| ; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py |
| ; RUN: llc < %s -mtriple=aarch64-- | FileCheck %s |
| |
| declare i4 @llvm.usub.sat.i4 (i4, i4) |
| declare i32 @llvm.usub.sat.i32 (i32, i32) |
| declare i64 @llvm.usub.sat.i64 (i64, i64) |
| |
| define i32 @func(i32 %x, i32 %y) nounwind { |
| ; CHECK-LABEL: func: |
| ; CHECK: // %bb.0: |
| ; CHECK-NEXT: subs w8, w0, w1 |
| ; CHECK-NEXT: csel w0, wzr, w8, lo |
| ; CHECK-NEXT: ret |
| %tmp = call i32 @llvm.usub.sat.i32(i32 %x, i32 %y); |
| ret i32 %tmp; |
| } |
| |
| define i64 @func2(i64 %x, i64 %y) nounwind { |
| ; CHECK-LABEL: func2: |
| ; CHECK: // %bb.0: |
| ; CHECK-NEXT: subs x8, x0, x1 |
| ; CHECK-NEXT: csel x0, xzr, x8, lo |
| ; CHECK-NEXT: ret |
| %tmp = call i64 @llvm.usub.sat.i64(i64 %x, i64 %y); |
| ret i64 %tmp; |
| } |
| |
| define i4 @func3(i4 %x, i4 %y) nounwind { |
| ; CHECK-LABEL: func3: |
| ; CHECK: // %bb.0: |
| ; CHECK-NEXT: lsl w8, w0, #28 |
| ; CHECK-NEXT: subs w8, w8, w1, lsl #28 |
| ; CHECK-NEXT: csel w8, wzr, w8, lo |
| ; CHECK-NEXT: lsr w0, w8, #28 |
| ; CHECK-NEXT: ret |
| %tmp = call i4 @llvm.usub.sat.i4(i4 %x, i4 %y); |
| ret i4 %tmp; |
| } |