1 ; RUN: llc -o - %s -mtriple=aarch64-unknown -aarch64-enable-cond-br-tune=false -mattr=+arith-bcc-fusion | FileCheck %s --check-prefix=FUSEBCC 2 ; RUN: llc -o - %s -mtriple=aarch64-unknown -aarch64-enable-cond-br-tune=false -mattr=+arith-cbz-fusion | FileCheck %s --check-prefix=FUSECBZ 3 ; RUN: llc -o - %s -mtriple=aarch64-unknown -aarch64-enable-cond-br-tune=false -mcpu=cyclone | FileCheck %s --check-prefix=FUSEBCC --check-prefix=FUSECBZ 4 5 target triple = "aarch64-unknown" 6 7 declare void @foobar(i32 %v0, i32 %v1) 8 9 ; Make sure cmp is scheduled in front of bcc 10 ; FUSEBCC-LABEL: test_cmp_bcc: 11 ; FUSEBCC: cmp {{w[0-9]+}}, #13 12 ; FUSEBCC-NEXT: b.ne {{.?LBB[0-9_]+}} 13 define void @test_cmp_bcc(i32 %a0, i32 %a1) { 14 entry: 15 %cond = icmp eq i32 %a0, 13 16 %v1 = add i32 %a1, 7 17 br i1 %cond, label %if, label %exit 18 19 if: 20 call void @foobar(i32 %v1, i32 %a0) 21 br label %exit 22 23 exit: 24 call void @foobar(i32 %a0, i32 %v1) 25 ret void 26 } 27 28 ; Make sure sub is scheduled in front of cbnz 29 ; FUSECBZ-LABEL: test_sub_cbz: 30 ; FUSECBZ: sub [[R:w[0-9]+]], {{w[0-9]+}}, #13 31 ; FUSECBZ-NEXT: cbnz [[R]], {{.?LBB[0-9_]+}} 32 define void @test_sub_cbz(i32 %a0, i32 %a1) { 33 entry: 34 ; except for the fusion opportunity the sub/add should be equal so the 35 ; scheduler would leave them in source order if it weren't for the scheduling 36 %v0 = sub i32 %a0, 13 37 %cond = icmp eq i32 %v0, 0 38 %v1 = add i32 %a1, 7 39 br i1 %cond, label %if, label %exit 40 41 if: 42 call void @foobar(i32 %v1, i32 %v0) 43 br label %exit 44 45 exit: 46 call void @foobar(i32 %v0, i32 %v1) 47 ret void 48 } 49
