1; RUN: llc < %s -mtriple=arm-linux-gnueabi -asm-verbose=false -verify-machineinstrs | FileCheck %s -check-prefix=CHECK-ARM 2; RUN: llc < %s -mtriple=thumb-linux-gnueabi -asm-verbose=false -verify-machineinstrs | FileCheck %s -check-prefix=CHECK-THUMB 3 4; RUN: llc < %s -mtriple=armv6-linux-gnueabi -asm-verbose=false -verify-machineinstrs | FileCheck %s -check-prefix=CHECK-ARMV6 5; RUN: llc < %s -mtriple=thumbv6-linux-gnueabi -asm-verbose=false -verify-machineinstrs | FileCheck %s -check-prefix=CHECK-THUMBV6 6 7; RUN: llc < %s -mtriple=armv7-linux-gnueabi -asm-verbose=false -verify-machineinstrs | FileCheck %s -check-prefix=CHECK-ARMV7 8; RUN: llc < %s -mtriple=thumbv7-linux-gnueabi -asm-verbose=false -verify-machineinstrs | FileCheck %s -check-prefix=CHECK-THUMBV7 9 10define zeroext i1 @test_cmpxchg_res_i8(i8* %addr, i8 %desired, i8 zeroext %new) { 11entry: 12 %0 = cmpxchg i8* %addr, i8 %desired, i8 %new monotonic monotonic 13 %1 = extractvalue { i8, i1 } %0, 1 14 ret i1 %1 15} 16 17; CHECK-ARM-LABEL: test_cmpxchg_res_i8 18; CHECK-ARM: bl __sync_val_compare_and_swap_1 19; CHECK-ARM: mov [[REG:r[0-9]+]], #0 20; CHECK-ARM: cmp r0, {{r[0-9]+}} 21; CHECK-ARM: moveq [[REG]], #1 22; CHECK-ARM: mov r0, [[REG]] 23 24; CHECK-THUMB-LABEL: test_cmpxchg_res_i8 25; CHECK-THUMB: bl __sync_val_compare_and_swap_1 26; CHECK-THUMB-NOT: mov [[R1:r[0-7]]], r0 27; CHECK-THUMB: push {r0} 28; CHECK-THUMB: pop {[[R1:r[0-7]]]} 29; CHECK-THUMB: movs r0, #1 30; CHECK-THUMB: movs [[R2:r[0-9]+]], #0 31; CHECK-THUMB: cmp [[R1]], {{r[0-9]+}} 32; CHECK-THUMB: beq 33; CHECK-THUMB: push {[[R2]]} 34; CHECK-THUMB: pop {r0} 35 36; CHECK-ARMV6-LABEL: test_cmpxchg_res_i8: 37; CHECK-ARMV6-NEXT: .fnstart 38; CHECK-ARMV6-NEXT: uxtb [[DESIRED:r[0-9]+]], r1 39; CHECK-ARMV6-NEXT: [[TRY:.LBB[0-9_]+]]: 40; CHECK-ARMV6-NEXT: ldrexb [[LD:r[0-9]+]], [r0] 41; CHECK-ARMV6-NEXT: mov [[RES:r[0-9]+]], #0 42; CHECK-ARMV6-NEXT: cmp [[LD]], [[DESIRED]] 43; CHECK-ARMV6-NEXT: bne [[END:.LBB[0-9_]+]] 44; CHECK-ARMV6-NEXT: strexb [[SUCCESS:r[0-9]+]], r2, [r0] 45; CHECK-ARMV6-NEXT: mov [[RES]], #1 46; CHECK-ARMV6-NEXT: cmp [[SUCCESS]], #0 47; CHECK-ARMV6-NEXT: bne [[TRY]] 48; CHECK-ARMV6-NEXT: [[END]]: 49; CHECK-ARMV6-NEXT: mov r0, [[RES]] 50; CHECK-ARMV6-NEXT: bx lr 51 52; CHECK-THUMBV6-LABEL: test_cmpxchg_res_i8: 53; CHECK-THUMBV6: mov [[EXPECTED:r[0-9]+]], r1 54; CHECK-THUMBV6-NEXT: bl __sync_val_compare_and_swap_1 55; CHECK-THUMBV6-NEXT: mov [[RES:r[0-9]+]], r0 56; CHECK-THUMBV6-NEXT: movs r0, #1 57; CHECK-THUMBV6-NEXT: movs [[ZERO:r[0-9]+]], #0 58; CHECK-THUMBV6-NEXT: cmp [[RES]], [[EXPECTED]] 59; CHECK-THUMBV6-NEXT: beq [[END:.LBB[0-9_]+]] 60; CHECK-THUMBV6-NEXT: mov r0, [[ZERO]] 61; CHECK-THUMBV6-NEXT: [[END]]: 62; CHECK-THUMBV6-NEXT: pop {{.*}}pc} 63 64; CHECK-ARMV7-LABEL: test_cmpxchg_res_i8: 65; CHECK-ARMV7-NEXT: .fnstart 66; CHECK-ARMV7-NEXT: uxtb [[DESIRED:r[0-9]+]], r1 67; CHECK-ARMV7-NEXT: [[TRY:.LBB[0-9_]+]]: 68; CHECK-ARMV7-NEXT: ldrexb [[LD:r[0-9]+]], [r0] 69; CHECK-ARMV7-NEXT: cmp [[LD]], [[DESIRED]] 70; CHECK-ARMV7-NEXT: bne [[FAIL:.LBB[0-9_]+]] 71; CHECK-ARMV7-NEXT: strexb [[SUCCESS:r[0-9]+]], r2, [r0] 72; CHECK-ARMV7-NEXT: mov [[RES:r[0-9]+]], #1 73; CHECK-ARMV7-NEXT: cmp [[SUCCESS]], #0 74; CHECK-ARMV7-NEXT: bne [[TRY]] 75; CHECK-ARMV7-NEXT: b [[END:.LBB[0-9_]+]] 76; CHECK-ARMV7-NEXT: [[FAIL]]: 77; CHECK-ARMV7-NEXT: clrex 78; CHECK-ARMV7-NEXT: mov [[RES]], #0 79; CHECK-ARMV7-NEXT: [[END]]: 80; CHECK-ARMV7-NEXT: mov r0, [[RES]] 81; CHECK-ARMV7-NEXT: bx lr 82 83; CHECK-THUMBV7-LABEL: test_cmpxchg_res_i8: 84; CHECK-THUMBV7-NEXT: .fnstart 85; CHECK-THUMBV7-NEXT: uxtb [[DESIRED:r[0-9]+]], r1 86; CHECK-THUMBV7-NEXT: b [[TRYLD:.LBB[0-9_]+]] 87; CHECK-THUMBV7-NEXT: [[TRYST:.LBB[0-9_]+]]: 88; CHECK-THUMBV7-NEXT: strexb [[SUCCESS:r[0-9]+]], r2, [r0] 89; CHECK-THUMBV7-NEXT: cmp [[SUCCESS]], #0 90; CHECK-THUMBV7-NEXT: itt eq 91; CHECK-THUMBV7-NEXT: moveq r0, #1 92; CHECK-THUMBV7-NEXT: bxeq lr 93; CHECK-THUMBV7-NEXT: [[TRYLD]]: 94; CHECK-THUMBV7-NEXT: ldrexb [[LD:r[0-9]+]], [r0] 95; CHECK-THUMBV7-NEXT: cmp [[LD]], [[DESIRED]] 96; CHECK-THUMBV7-NEXT: beq [[TRYST:.LBB[0-9_]+]] 97; CHECK-THUMBV7-NEXT: clrex 98; CHECK-THUMBV7-NEXT: movs r0, #0 99; CHECK-THUMBV7-NEXT: bx lr 100