1; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py 2; RUN: llc -mtriple=arm64_32-apple-ios %s -aarch64-enable-sink-fold=true -o - | FileCheck %s 3 4; If %base < 96 then the sum will not wrap (in an unsigned sense), but "ldr w0, 5; [x0, #-96]" would. 6define i32 @test_valid_wrap(i32 %base) { 7; CHECK-LABEL: test_valid_wrap: 8; CHECK: ; %bb.0: 9; CHECK-NEXT: sub w8, w0, #96 10; CHECK-NEXT: ldr w0, [x8] 11; CHECK-NEXT: ret 12 13 %newaddr = add nuw i32 %base, -96 14 %ptr = inttoptr i32 %newaddr to ptr 15 %val = load i32, ptr %ptr 16 ret i32 %val 17} 18 19define i8 @test_valid_wrap_optimizable(ptr %base) { 20; CHECK-LABEL: test_valid_wrap_optimizable: 21; CHECK: ; %bb.0: 22; CHECK-NEXT: ldurb w0, [x0, #-96] 23; CHECK-NEXT: ret 24 25 %newaddr = getelementptr inbounds i8, ptr %base, i32 -96 26 %val = load i8, ptr %newaddr 27 ret i8 %val 28} 29 30define i8 @test_valid_wrap_optimizable1(ptr %base, i32 %offset) { 31; CHECK-LABEL: test_valid_wrap_optimizable1: 32; CHECK: ; %bb.0: 33; CHECK-NEXT: ldrb w0, [x0, w1, sxtw] 34; CHECK-NEXT: ret 35 36 %newaddr = getelementptr inbounds i8, ptr %base, i32 %offset 37 %val = load i8, ptr %newaddr 38 ret i8 %val 39} 40 41; 42define i8 @test_valid_wrap_optimizable2(ptr %base, i32 %offset) { 43; CHECK-LABEL: test_valid_wrap_optimizable2: 44; CHECK: ; %bb.0: 45; CHECK-NEXT: mov w8, #-100 ; =0xffffff9c 46; CHECK-NEXT: ; kill: def $w1 killed $w1 def $x1 47; CHECK-NEXT: ldrb w0, [x8, w1, sxtw] 48; CHECK-NEXT: ret 49 50 %newaddr = getelementptr inbounds i8, ptr inttoptr(i32 -100 to ptr), i32 %offset 51 %val = load i8, ptr %newaddr 52 ret i8 %val 53} 54