1 ; RUN: llc < %s -mtriple=thumbv7m -mattr=+execute-only -O0 %s -o - \ 2 ; RUN: | FileCheck --check-prefix=CHECK-SUBW-ADDW %s 3 ; RUN: llc < %s -mtriple=thumbv8m.base -mattr=+execute-only -O0 %s -o - \ 4 ; RUN: | FileCheck --check-prefix=CHECK-MOVW-MOVT-ADD %s 5 ; RUN: llc < %s -mtriple=thumbv8m.main -mattr=+execute-only -O0 %s -o - \ 6 ; RUN: | FileCheck --check-prefix=CHECK-SUBW-ADDW %s 7 8 define i8 @test_big_stack_frame() { 9 ; CHECK-SUBW-ADDW-LABEL: test_big_stack_frame: 10 ; CHECK-SUBW-ADDW-NOT: ldr {{r[0-9]+}}, .{{.*}} 11 ; CHECK-SUBW-ADDW: sub.w sp, sp, #65536 12 ; CHECK-SUBW-ADDW-NOT: ldr {{r[0-9]+}}, .{{.*}} 13 ; CHECK-SUBW-ADDW: add.w [[REG1:r[0-9]+|lr]], sp, #255 14 ; CHECK-SUBW-ADDW: add.w {{r[0-9]+}}, [[REG1]], #65280 15 ; CHECK-SUBW-ADDW-NOT: ldr {{r[0-9]+}}, .{{.*}} 16 ; CHECK-SUBW-ADDW: add.w [[REGX:r[0-9]+|lr]], sp, #61440 17 ; CHECK-SUBW-ADDW-NOT: ldr {{r[0-9]+}}, .{{.*}} 18 ; CHECK-SUBW-ADDW: add.w sp, sp, #65536 19 20 ; CHECK-MOVW-MOVT-ADD-LABEL: test_big_stack_frame: 21 ; CHECK-MOVW-MOVT-ADD-NOT: ldr {{r[0-9]+}}, .{{.*}} 22 ; CHECK-MOVW-MOVT-ADD: movw [[REG1:r[0-9]+]], #0 23 ; CHECK-MOVW-MOVT-ADD: movt [[REG1]], #65535 24 ; CHECK-MOVW-MOVT-ADD: add sp, [[REG1]] 25 ; CHECK-MOVW-MOVT-ADD-NOT: ldr {{r[0-9]+}}, .{{.*}} 26 ; CHECK-MOVW-MOVT-ADD: movw [[REG2:r[0-9]+]], #65532 27 ; CHECK-MOVW-MOVT-ADD: movt [[REG2]], #0 28 ; CHECK-MOVW-MOVT-ADD: add [[REG2]], sp 29 ; CHECK-MOVW-MOVT-ADD-NOT: ldr {{r[0-9]+}}, .{{.*}} 30 ; CHECK-MOVW-MOVT-ADD: movw [[REG3:r[0-9]+]], #65532 31 ; CHECK-MOVW-MOVT-ADD: movt [[REG3]], #0 32 ; CHECK-MOVW-MOVT-ADD: add [[REG3]], sp 33 ; CHECK-MOVW-MOVT-ADD-NOT: ldr {{r[0-9]+}}, .{{.*}} 34 ; CHECK-MOVW-MOVT-ADD: movw [[REG4:r[0-9]+]], #0 35 ; CHECK-MOVW-MOVT-ADD: movt [[REG4]], #1 36 ; CHECK-MOVW-MOVT-ADD: add sp, [[REG4]] 37 38 entry: 39 %s1 = alloca i8 40 %buffer = alloca [65528 x i8], align 1 41 call void @foo(i8* %s1) 42 %load = load i8, i8* %s1 43 ret i8 %load 44 } 45 46 declare void @foo(i8*) 47
