; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py ; RUN: llc < %s -mtriple=aarch64-- | FileCheck %s --check-prefixes=CHECK,CHECK-SD ; RUN: llc < %s -mtriple=aarch64-- -global-isel | FileCheck %s --check-prefixes=CHECK,CHECK-GI define i32 @func(i32 %x, i32 %y) nounwind { ; CHECK-SD-LABEL: func: ; CHECK-SD: // %bb.0: ; CHECK-SD-NEXT: subs w8, w0, w1 ; CHECK-SD-NEXT: csel w0, wzr, w8, lo ; CHECK-SD-NEXT: ret ; ; CHECK-GI-LABEL: func: ; CHECK-GI: // %bb.0: ; CHECK-GI-NEXT: subs w8, w0, w1 ; CHECK-GI-NEXT: cset w9, lo ; CHECK-GI-NEXT: tst w9, #0x1 ; CHECK-GI-NEXT: csel w0, wzr, w8, ne ; CHECK-GI-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-SD-LABEL: func2: ; CHECK-SD: // %bb.0: ; CHECK-SD-NEXT: subs x8, x0, x1 ; CHECK-SD-NEXT: csel x0, xzr, x8, lo ; CHECK-SD-NEXT: ret ; ; CHECK-GI-LABEL: func2: ; CHECK-GI: // %bb.0: ; CHECK-GI-NEXT: subs x8, x0, x1 ; CHECK-GI-NEXT: cset w9, lo ; CHECK-GI-NEXT: tst w9, #0x1 ; CHECK-GI-NEXT: csel x0, xzr, x8, ne ; CHECK-GI-NEXT: ret %tmp = call i64 @llvm.usub.sat.i64(i64 %x, i64 %y); ret i64 %tmp; } define i16 @func16(i16 %x, i16 %y) nounwind { ; CHECK-SD-LABEL: func16: ; CHECK-SD: // %bb.0: ; CHECK-SD-NEXT: and w8, w0, #0xffff ; CHECK-SD-NEXT: subs w8, w8, w1, uxth ; CHECK-SD-NEXT: csel w0, wzr, w8, lo ; CHECK-SD-NEXT: ret ; ; CHECK-GI-LABEL: func16: ; CHECK-GI: // %bb.0: ; CHECK-GI-NEXT: and w8, w0, #0xffff ; CHECK-GI-NEXT: sub w8, w8, w1, uxth ; CHECK-GI-NEXT: cmp w8, w8, uxth ; CHECK-GI-NEXT: csel w0, wzr, w8, ne ; CHECK-GI-NEXT: ret %tmp = call i16 @llvm.usub.sat.i16(i16 %x, i16 %y); ret i16 %tmp; } define i8 @func8(i8 %x, i8 %y) nounwind { ; CHECK-SD-LABEL: func8: ; CHECK-SD: // %bb.0: ; CHECK-SD-NEXT: and w8, w0, #0xff ; CHECK-SD-NEXT: subs w8, w8, w1, uxtb ; CHECK-SD-NEXT: csel w0, wzr, w8, lo ; CHECK-SD-NEXT: ret ; ; CHECK-GI-LABEL: func8: ; CHECK-GI: // %bb.0: ; CHECK-GI-NEXT: and w8, w0, #0xff ; CHECK-GI-NEXT: sub w8, w8, w1, uxtb ; CHECK-GI-NEXT: cmp w8, w8, uxtb ; CHECK-GI-NEXT: csel w0, wzr, w8, ne ; CHECK-GI-NEXT: ret %tmp = call i8 @llvm.usub.sat.i8(i8 %x, i8 %y); ret i8 %tmp; } define i4 @func3(i4 %x, i4 %y) nounwind { ; CHECK-SD-LABEL: func3: ; CHECK-SD: // %bb.0: ; CHECK-SD-NEXT: and w8, w1, #0xf ; CHECK-SD-NEXT: and w9, w0, #0xf ; CHECK-SD-NEXT: subs w8, w9, w8 ; CHECK-SD-NEXT: csel w0, wzr, w8, lo ; CHECK-SD-NEXT: ret ; ; CHECK-GI-LABEL: func3: ; CHECK-GI: // %bb.0: ; CHECK-GI-NEXT: and w8, w0, #0xf ; CHECK-GI-NEXT: and w9, w1, #0xf ; CHECK-GI-NEXT: sub w8, w8, w9 ; CHECK-GI-NEXT: and w9, w8, #0xf ; CHECK-GI-NEXT: cmp w8, w9 ; CHECK-GI-NEXT: csel w0, wzr, w8, ne ; CHECK-GI-NEXT: ret %tmp = call i4 @llvm.usub.sat.i4(i4 %x, i4 %y); ret i4 %tmp; } ;; NOTE: These prefixes are unused and the list is autogenerated. Do not add tests below this line: ; CHECK: {{.*}}