| Prakhar Bahuguna | 52a7dd7 | 2016-12-15 07:59:08 +0000 | [diff] [blame^] | 1 | ; RUN: llc < %s -mtriple=thumbv7m -arm-execute-only -O0 %s -o - \ |
| 2 | ; RUN: | FileCheck --check-prefix=CHECK-SUBW-ADDW %s |
| 3 | ; RUN: llc < %s -mtriple=thumbv8m.base -arm-execute-only -O0 %s -o - \ |
| 4 | ; RUN: | FileCheck --check-prefix=CHECK-MOVW-MOVT-ADD %s |
| 5 | ; RUN: llc < %s -mtriple=thumbv8m.main -arm-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]+]], 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 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*) |