1 ; RUN: llc < %s -mtriple=armv7-apple-ios -verify-machineinstrs | FileCheck %s -check-prefix=ARM 2 ; RUN: llc < %s -mtriple=armv7-apple-ios -O0 | FileCheck %s -check-prefix=ARM 3 ; RUN: llc < %s -mtriple=thumbv7-apple-ios -verify-machineinstrs | FileCheck %s -check-prefix=THUMBTWO 4 ; RUN: llc < %s -mtriple=thumbv6-apple-ios | FileCheck %s -check-prefix=THUMBONE 5 ; RUN: llc < %s -mtriple=armv4-apple-ios | FileCheck %s -check-prefix=ARMV4 6 ; RUN: llc < %s -mtriple=armv6-apple-ios | FileCheck %s -check-prefix=ARMV6 7 ; RUN: llc < %s -mtriple=thumbv7m-apple-ios | FileCheck %s -check-prefix=THUMBM 8 9 define void @test1(i32* %ptr, i32 %val1) { 10 ; ARM-LABEL: test1 11 ; ARM: dmb {{ish$}} 12 ; ARM-NEXT: str 13 ; ARM-NEXT: dmb {{ish$}} 14 ; THUMBONE-LABEL: test1 15 ; THUMBONE: __sync_lock_test_and_set_4 16 ; THUMBTWO-LABEL: test1 17 ; THUMBTWO: dmb {{ish$}} 18 ; THUMBTWO-NEXT: str 19 ; THUMBTWO-NEXT: dmb {{ish$}} 20 ; ARMV6-LABEL: test1 21 ; ARMV6: mcr p15, #0, {{r[0-9]*}}, c7, c10, #5 22 ; ARMV6: str 23 ; ARMV6: mcr p15, #0, {{r[0-9]*}}, c7, c10, #5 24 ; THUMBM-LABEL: test1 25 ; THUMBM: dmb sy 26 ; THUMBM: str 27 ; THUMBM: dmb sy 28 store atomic i32 %val1, i32* %ptr seq_cst, align 4 29 ret void 30 } 31 32 define i32 @test2(i32* %ptr) { 33 ; ARM-LABEL: test2 34 ; ARM: ldr 35 ; ARM-NEXT: dmb {{ish$}} 36 ; THUMBONE-LABEL: test2 37 ; THUMBONE: __sync_val_compare_and_swap_4 38 ; THUMBTWO-LABEL: test2 39 ; THUMBTWO: ldr 40 ; THUMBTWO-NEXT: dmb {{ish$}} 41 ; ARMV6-LABEL: test2 42 ; ARMV6: ldr 43 ; ARMV6: mcr p15, #0, {{r[0-9]*}}, c7, c10, #5 44 ; THUMBM-LABEL: test2 45 ; THUMBM: ldr 46 ; THUMBM: dmb sy 47 %val = load atomic i32, i32* %ptr seq_cst, align 4 48 ret i32 %val 49 } 50 51 define void @test3(i8* %ptr1, i8* %ptr2) { 52 ; ARM-LABEL: test3 53 ; ARM-NOT: dmb 54 ; ARM: ldrb 55 ; ARM-NOT: dmb 56 ; ARM: strb 57 ; ARM-NOT: dmb 58 ; ARM: bx lr 59 60 ; THUMBTWO-LABEL: test3 61 ; THUMBTWO-NOT: dmb 62 ; THUMBTWO: ldrb 63 ; THUMBTWO-NOT: dmb 64 ; THUMBTWO: strb 65 ; THUMBTWO-NOT: dmb 66 ; THUMBTWO: bx lr 67 68 ; THUMBONE-LABEL: test3 69 ; THUMBONE-NOT: dmb 70 ; THUMBONE: ldrb 71 ; THUMBONE-NOT: dmb 72 ; THUMBONE: strb 73 ; THUMBONE-NOT: dmb 74 75 ; ARMV6-LABEL: test3 76 ; ARMV6-NOT: mcr 77 ; THUMBM-LABEL: test3 78 ; THUMBM-NOT: dmb sy 79 %val = load atomic i8, i8* %ptr1 unordered, align 1 80 store atomic i8 %val, i8* %ptr2 unordered, align 1 81 ret void 82 } 83 84 define void @test4(i8* %ptr1, i8* %ptr2) { 85 ; THUMBONE-LABEL: test4 86 ; THUMBONE: ___sync_val_compare_and_swap_1 87 ; THUMBONE: ___sync_lock_test_and_set_1 88 ; ARMV6-LABEL: test4 89 ; THUMBM-LABEL: test4 90 %val = load atomic i8, i8* %ptr1 seq_cst, align 1 91 store atomic i8 %val, i8* %ptr2 seq_cst, align 1 92 ret void 93 } 94 95 define i64 @test_old_load_64bit(i64* %p) { 96 ; ARMV4-LABEL: test_old_load_64bit 97 ; ARMV4: ___sync_val_compare_and_swap_8 98 %1 = load atomic i64, i64* %p seq_cst, align 8 99 ret i64 %1 100 } 101 102 define void @test_old_store_64bit(i64* %p, i64 %v) { 103 ; ARMV4-LABEL: test_old_store_64bit 104 ; ARMV4: ___sync_lock_test_and_set_8 105 store atomic i64 %v, i64* %p seq_cst, align 8 106 ret void 107 } 108
