| ; RUN: llc < %s -mtriple=thumbv7m -mattr=+execute-only -O0 %s -o - \ |
| ; RUN: | FileCheck --check-prefix=CHECK-SUBW-ADDW %s |
| ; RUN: llc < %s -mtriple=thumbv8m.base -mattr=+execute-only -O0 %s -o - \ |
| ; RUN: | FileCheck --check-prefix=CHECK-MOVW-MOVT-ADD %s |
| ; RUN: llc < %s -mtriple=thumbv8m.main -mattr=+execute-only -O0 %s -o - \ |
| ; RUN: | FileCheck --check-prefix=CHECK-SUBW-ADDW %s |
| |
| define i8 @test_big_stack_frame() { |
| ; CHECK-SUBW-ADDW-LABEL: test_big_stack_frame: |
| ; CHECK-SUBW-ADDW-NOT: ldr {{r[0-9]+}}, .{{.*}} |
| ; CHECK-SUBW-ADDW: sub.w sp, sp, #65536 |
| ; CHECK-SUBW-ADDW-NOT: ldr {{r[0-9]+}}, .{{.*}} |
| ; CHECK-SUBW-ADDW: add.w [[REG1:r[0-9]+|lr]], sp, #255 |
| ; CHECK-SUBW-ADDW: add.w {{r[0-9]+}}, [[REG1]], #65280 |
| ; CHECK-SUBW-ADDW-NOT: ldr {{r[0-9]+}}, .{{.*}} |
| ; CHECK-SUBW-ADDW: add.w [[REGX:r[0-9]+|lr]], sp, #61440 |
| ; CHECK-SUBW-ADDW-NOT: ldr {{r[0-9]+}}, .{{.*}} |
| ; CHECK-SUBW-ADDW: add.w sp, sp, #65536 |
| |
| ; CHECK-MOVW-MOVT-ADD-LABEL: test_big_stack_frame: |
| ; CHECK-MOVW-MOVT-ADD-NOT: ldr {{r[0-9]+}}, .{{.*}} |
| ; CHECK-MOVW-MOVT-ADD: movw [[REG1:r[0-9]+]], #0 |
| ; CHECK-MOVW-MOVT-ADD: movt [[REG1]], #65535 |
| ; CHECK-MOVW-MOVT-ADD: add sp, [[REG1]] |
| ; CHECK-MOVW-MOVT-ADD-NOT: ldr {{r[0-9]+}}, .{{.*}} |
| ; CHECK-MOVW-MOVT-ADD: movw [[REG2:r[0-9]+]], #65532 |
| ; CHECK-MOVW-MOVT-ADD: movt [[REG2]], #0 |
| ; CHECK-MOVW-MOVT-ADD: add [[REG2]], sp |
| ; CHECK-MOVW-MOVT-ADD-NOT: ldr {{r[0-9]+}}, .{{.*}} |
| ; CHECK-MOVW-MOVT-ADD: movw [[REG3:r[0-9]+]], #65532 |
| ; CHECK-MOVW-MOVT-ADD: movt [[REG3]], #0 |
| ; CHECK-MOVW-MOVT-ADD: add [[REG3]], sp |
| ; CHECK-MOVW-MOVT-ADD-NOT: ldr {{r[0-9]+}}, .{{.*}} |
| ; CHECK-MOVW-MOVT-ADD: movw [[REG4:r[0-9]+]], #0 |
| ; CHECK-MOVW-MOVT-ADD: movt [[REG4]], #1 |
| ; CHECK-MOVW-MOVT-ADD: add sp, [[REG4]] |
| |
| entry: |
| %s1 = alloca i8 |
| %buffer = alloca [65528 x i8], align 1 |
| call void @foo(i8* %s1) |
| %load = load i8, i8* %s1 |
| ret i8 %load |
| } |
| |
| declare void @foo(i8*) |
