49 lines
2.1 KiB
LLVM
49 lines
2.1 KiB
LLVM
|
; 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.base -mcpu=cortex-m23 -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*)
|