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 10 define zeroext i1 @test_cmpxchg_res_i8(i8* %addr, i8 %desired, i8 zeroext %new) { 11 entry: 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
