1; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py 2; RUN: llc -mtriple=aarch64-none-linux -O2 < %s | FileCheck %s --check-prefix=CHECK-O2 3; RUN: llc -mtriple=aarch64-none-linux -O3 < %s | FileCheck %s --check-prefix=CHECK-O3 4 5; RUN: llc -mtriple=aarch64-none-linux -tail-dup-size=4 < %s | FileCheck %s --check-prefix=CHECK-O2 6; RUN: llc -mtriple=aarch64-none-linux -tail-dup-placement-threshold=4 < %s | FileCheck %s --check-prefix=CHECK-O2 7; RUN: llc -mtriple=aarch64-none-linux -tail-dup-placement-threshold=6 < %s | FileCheck %s --check-prefix=CHECK-O3 8 9%a = type { ptr, i32, %b } 10%b = type { %c } 11%c = type { i32, i32, [31 x i8] } 12 13@global_ptr = dso_local local_unnamed_addr global ptr null, align 8 14@global_int = dso_local local_unnamed_addr global i32 0, align 4 15 16define dso_local void @testcase(ptr nocapture %arg){ 17; CHECK-O2-LABEL: testcase: 18; CHECK-O2: // %bb.0: // %entry 19; CHECK-O2-NEXT: adrp x8, global_ptr 20; CHECK-O2-NEXT: ldr x9, [x8, :lo12:global_ptr] 21; CHECK-O2-NEXT: cbz x9, .LBB0_2 22; CHECK-O2-NEXT: // %bb.1: // %if.then 23; CHECK-O2-NEXT: ldr x9, [x9] 24; CHECK-O2-NEXT: str x9, [x0] 25; CHECK-O2-NEXT: ldr x8, [x8, :lo12:global_ptr] 26; CHECK-O2-NEXT: b .LBB0_3 27; CHECK-O2-NEXT: .LBB0_2: 28; CHECK-O2-NEXT: mov x8, xzr 29; CHECK-O2-NEXT: .LBB0_3: // %if.end 30; CHECK-O2-NEXT: adrp x9, global_int 31; CHECK-O2-NEXT: add x2, x8, #16 32; CHECK-O2-NEXT: mov w0, #10 33; CHECK-O2-NEXT: ldr w1, [x9, :lo12:global_int] 34; CHECK-O2-NEXT: b externalfunc 35; 36; CHECK-O3-LABEL: testcase: 37; CHECK-O3: // %bb.0: // %entry 38; CHECK-O3-NEXT: adrp x8, global_ptr 39; CHECK-O3-NEXT: ldr x9, [x8, :lo12:global_ptr] 40; CHECK-O3-NEXT: cbz x9, .LBB0_2 41; CHECK-O3-NEXT: // %bb.1: // %if.then 42; CHECK-O3-NEXT: ldr x9, [x9] 43; CHECK-O3-NEXT: str x9, [x0] 44; CHECK-O3-NEXT: ldr x8, [x8, :lo12:global_ptr] 45; CHECK-O3-NEXT: adrp x9, global_int 46; CHECK-O3-NEXT: add x2, x8, #16 47; CHECK-O3-NEXT: mov w0, #10 48; CHECK-O3-NEXT: ldr w1, [x9, :lo12:global_int] 49; CHECK-O3-NEXT: b externalfunc 50; CHECK-O3-NEXT: .LBB0_2: 51; CHECK-O3-NEXT: mov x8, xzr 52; CHECK-O3-NEXT: adrp x9, global_int 53; CHECK-O3-NEXT: add x2, x8, #16 54; CHECK-O3-NEXT: mov w0, #10 55; CHECK-O3-NEXT: ldr w1, [x9, :lo12:global_int] 56; CHECK-O3-NEXT: b externalfunc 57entry: 58 %0 = load ptr, ptr @global_ptr, align 8 59 %cmp.not = icmp eq ptr %0, null 60 br i1 %cmp.not, label %if.end, label %if.then 61 62if.then: ; preds = %entry 63 %1 = load ptr, ptr %0, align 8 64 store ptr %1, ptr %arg, align 8 65 %.pre = load ptr, ptr @global_ptr, align 8 66 br label %if.end 67 68if.end: ; preds = %if.then, %entry 69 %2 = phi ptr [ %.pre, %if.then ], [ null, %entry ] 70 %3 = load i32, ptr @global_int, align 4 71 %4 = getelementptr inbounds %a, ptr %2, i64 0, i32 2, i32 0, i32 1 72 tail call void @externalfunc(i32 10, i32 %3, ptr nonnull %4) 73 ret void 74} 75 76declare dso_local void @externalfunc(i32, i32, ptr) 77