1; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py 2; RUN: llc < %s -mtriple=arm-linux-gnueabi -asm-verbose=false -verify-machineinstrs | FileCheck %s -check-prefix=CHECK-ARM 3; RUN: llc < %s -mtriple=thumb-linux-gnueabi -asm-verbose=false -verify-machineinstrs | FileCheck %s -check-prefix=CHECK-THUMB 4 5; RUN: llc < %s -mtriple=armv6-linux-gnueabi -asm-verbose=false -verify-machineinstrs | FileCheck %s -check-prefix=CHECK-ARMV6 6; RUN: llc < %s -mtriple=thumbv6-linux-gnueabi -asm-verbose=false -verify-machineinstrs | FileCheck %s -check-prefix=CHECK-THUMBV6 7 8; RUN: llc < %s -mtriple=armv7-linux-gnueabi -asm-verbose=false -verify-machineinstrs | FileCheck %s -check-prefix=CHECK-ARMV7 9; RUN: llc < %s -mtriple=thumbv7-linux-gnueabi -asm-verbose=false -verify-machineinstrs | FileCheck %s -check-prefix=CHECK-THUMBV7 10 11define zeroext i1 @test_cmpxchg_res_i8(i8* %addr, i8 %desired, i8 zeroext %new) { 12; CHECK-ARM-LABEL: test_cmpxchg_res_i8: 13; CHECK-ARM: .save {r4, lr} 14; CHECK-ARM-NEXT: push {r4, lr} 15; CHECK-ARM-NEXT: mov r4, r1 16; CHECK-ARM-NEXT: bl __sync_val_compare_and_swap_1 17; CHECK-ARM-NEXT: and r1, r4, #255 18; CHECK-ARM-NEXT: sub r0, r0, r1 19; CHECK-ARM-NEXT: rsbs r1, r0, #0 20; CHECK-ARM-NEXT: adc r0, r0, r1 21; CHECK-ARM-NEXT: pop {r4, lr} 22; CHECK-ARM-NEXT: mov pc, lr 23; 24; CHECK-THUMB-LABEL: test_cmpxchg_res_i8: 25; CHECK-THUMB: .save {r4, lr} 26; CHECK-THUMB-NEXT: push {r4, lr} 27; CHECK-THUMB-NEXT: movs r4, r1 28; CHECK-THUMB-NEXT: bl __sync_val_compare_and_swap_1 29; CHECK-THUMB-NEXT: movs r1, #255 30; CHECK-THUMB-NEXT: ands r1, r4 31; CHECK-THUMB-NEXT: subs r1, r0, r1 32; CHECK-THUMB-NEXT: rsbs r0, r1, #0 33; CHECK-THUMB-NEXT: adcs r0, r1 34; CHECK-THUMB-NEXT: pop {r4} 35; CHECK-THUMB-NEXT: pop {r1} 36; CHECK-THUMB-NEXT: bx r1 37; 38; CHECK-ARMV6-LABEL: test_cmpxchg_res_i8: 39; CHECK-ARMV6: uxtb r1, r1 40; CHECK-ARMV6-NEXT: .LBB0_1: 41; CHECK-ARMV6-NEXT: ldrexb r3, [r0] 42; CHECK-ARMV6-NEXT: cmp r3, r1 43; CHECK-ARMV6-NEXT: movne r0, #0 44; CHECK-ARMV6-NEXT: bxne lr 45; CHECK-ARMV6-NEXT: .LBB0_2: 46; CHECK-ARMV6-NEXT: strexb r3, r2, [r0] 47; CHECK-ARMV6-NEXT: cmp r3, #0 48; CHECK-ARMV6-NEXT: moveq r0, #1 49; CHECK-ARMV6-NEXT: bxeq lr 50; CHECK-ARMV6-NEXT: b .LBB0_1 51; 52; CHECK-THUMBV6-LABEL: test_cmpxchg_res_i8: 53; CHECK-THUMBV6: .save {r4, lr} 54; CHECK-THUMBV6-NEXT: push {r4, lr} 55; CHECK-THUMBV6-NEXT: mov r4, r1 56; CHECK-THUMBV6-NEXT: bl __sync_val_compare_and_swap_1 57; CHECK-THUMBV6-NEXT: uxtb r1, r4 58; CHECK-THUMBV6-NEXT: subs r1, r0, r1 59; CHECK-THUMBV6-NEXT: rsbs r0, r1, #0 60; CHECK-THUMBV6-NEXT: adcs r0, r1 61; CHECK-THUMBV6-NEXT: pop {r4, pc} 62; 63; CHECK-ARMV7-LABEL: test_cmpxchg_res_i8: 64; CHECK-ARMV7: uxtb r1, r1 65; CHECK-ARMV7-NEXT: .LBB0_1: 66; CHECK-ARMV7-NEXT: ldrexb r3, [r0] 67; CHECK-ARMV7-NEXT: cmp r3, r1 68; CHECK-ARMV7-NEXT: bne .LBB0_3 69; CHECK-ARMV7-NEXT: strexb r3, r2, [r0] 70; CHECK-ARMV7-NEXT: cmp r3, #0 71; CHECK-ARMV7-NEXT: moveq r0, #1 72; CHECK-ARMV7-NEXT: bxeq lr 73; CHECK-ARMV7-NEXT: b .LBB0_1 74; CHECK-ARMV7-NEXT: .LBB0_3: 75; CHECK-ARMV7-NEXT: mov r0, #0 76; CHECK-ARMV7-NEXT: clrex 77; CHECK-ARMV7-NEXT: bx lr 78; 79; CHECK-THUMBV7-LABEL: test_cmpxchg_res_i8: 80; CHECK-THUMBV7: uxtb r1, r1 81; CHECK-THUMBV7-NEXT: .LBB0_1: 82; CHECK-THUMBV7-NEXT: ldrexb r3, [r0] 83; CHECK-THUMBV7-NEXT: cmp r3, r1 84; CHECK-THUMBV7-NEXT: bne .LBB0_3 85; CHECK-THUMBV7-NEXT: strexb r3, r2, [r0] 86; CHECK-THUMBV7-NEXT: cmp r3, #0 87; CHECK-THUMBV7-NEXT: itt eq 88; CHECK-THUMBV7-NEXT: moveq r0, #1 89; CHECK-THUMBV7-NEXT: bxeq lr 90; CHECK-THUMBV7-NEXT: b .LBB0_1 91; CHECK-THUMBV7-NEXT: .LBB0_3: 92; CHECK-THUMBV7-NEXT: movs r0, #0 93; CHECK-THUMBV7-NEXT: clrex 94; CHECK-THUMBV7-NEXT: bx lr 95entry: 96 %0 = cmpxchg i8* %addr, i8 %desired, i8 %new monotonic monotonic 97 %1 = extractvalue { i8, i1 } %0, 1 98 ret i1 %1 99} 100