1; RUN: llc -mtriple=thumbv6m-linux-eabi -mattr=+execute-only %s -o - | FileCheck %s --check-prefixes=CHECK,CHECK-NOMOVW-SIZE,CHECK-NOMOVW-LIMIT 2; RUN: llc -mtriple=thumbv8m.base-linux-eabi -mattr=+execute-only %s -o - | FileCheck %s --check-prefixes=CHECK,CHECK-MOVW-SIZE,CHECK-MOVW-LIMIT 3; RUN: llc -mtriple=thumbv7m-linux-eabi -mattr=+execute-only %s -o - | FileCheck %s --check-prefixes=CHECK,CHECK-MOVW-SIZE,CHECK-MRC-LIMIT 4; RUN: llc -mtriple=thumbv8m.main-linux-eabi -mattr=+execute-only %s -o - | FileCheck %s --check-prefixes=CHECK,CHECK-MOVW-SIZE,CHECK-MRC-LIMIT 5 6%struct.large_struct = type { [500 x i8] } 7declare void @fn(ptr) 8 9; CHECK-LABEL: test: 10; CHECK: mov [[SP:r[0-9]+]], sp 11; CHECK-MOVW-SIZE-NEXT: movw [[SIZE:r[0-9]+]], #4032 12; CHECK-NOMOVW-SIZE-NEXT: movs [[SIZE:r[0-9]+]], #15 13; CHECK-NOMOVW-SIZE-NEXT: lsls [[SIZE]], [[SIZE]], #8 14; CHECK-NOMOVW-SIZE-NEXT: adds [[SIZE]], #192 15; CHECK-NEXT: sub{{s?}} [[SP]], [[SP]], [[SIZE]] 16; CHECK-MOVW-LIMIT-NEXT: movw [[LIMIT:r[0-9]+]], :lower16:__STACK_LIMIT 17; CHECK-MOVW-LIMIT-NEXT: movt [[LIMIT]], :upper16:__STACK_LIMIT 18; CHECK-NOMOVW-LIMIT-NEXT: movs [[LIMIT:r[0-9]+]], :upper8_15:__STACK_LIMIT 19; CHECK-NOMOVW-LIMIT-NEXT: lsls [[LIMIT]], [[LIMIT]], #8 20; CHECK-NOMOVW-LIMIT-NEXT: adds [[LIMIT]], :upper0_7:__STACK_LIMIT 21; CHECK-NOMOVW-LIMIT-NEXT: lsls [[LIMIT]], [[LIMIT]], #8 22; CHECK-NOMOVW-LIMIT-NEXT: adds [[LIMIT]], :lower8_15:__STACK_LIMIT 23; CHECK-NOMOVW-LIMIT-NEXT: lsls [[LIMIT]], [[LIMIT]], #8 24; CHECK-NOMOVW-LIMIT-NEXT: adds [[LIMIT]], :lower0_7:__STACK_LIMIT 25; CHECK-MRC-LIMIT-NEXT: p15, #0, [[LIMIT:r[0-9]+]], c13, c0, #3 26; CHECK-NEXT: ldr [[LIMIT]], [[[LIMIT]]{{.*}}] 27; CHECK-NEXT: cmp [[LIMIT]], [[SP]] 28; CHECK-NEXT: bls 29; CHECK-NEXT: @{{.*}}: 30; CHECK-MOVW-SIZE-NEXT: movw r4, #4032 31; CHECK-NOMOVW-SIZE-NEXT: movs r4, #15 32; CHECK-NOMOVW-SIZE-NEXT: lsls r4, r4, #8 33; CHECK-NOMOVW-SIZE-NEXT: adds r4, #192 34; CHECK-MOVW-SIZE-NEXT: movw r5, #484 35; CHECK-NOMOVW-SIZE-NEXT: movs r5, #1 36; CHECK-NOMOVW-SIZE-NEXT: lsls r5, r5, #8 37; CHECK-NOMOVW-SIZE-NEXT: adds r5, #228 38; CHECK-NEXT: push {lr} 39; CHECK-NEXT: bl __morestack 40 41define void @test(ptr byval(%struct.large_struct) align 4 %arg) #0 { 42 %ptr = alloca i32, i32 1000 43 call void @fn(ptr %ptr) 44 ret void 45} 46 47attributes #0 = { "split-stack" } 48