1; Tests the genration of ".arch_extension" attribute for hardware
2; division on krait CPU. For now, krait is recognized as "cortex-a9" + hwdiv
3; Also, tests for the hwdiv instruction on krait CPU
4
5; check for arch_extension/cpu directive
6; RUN: llc < %s -mtriple=armv7-linux-gnueabi -mcpu=krait | FileCheck %s --check-prefix=DIV_EXTENSION
7; RUN: llc < %s -mtriple=thumbv7-linux-gnueabi -mcpu=krait | FileCheck %s --check-prefix=DIV_EXTENSION
8; RUN: llc < %s -mtriple=armv7-linux-gnueabi -mcpu=cortex-a9 | FileCheck %s --check-prefix=NODIV_KRAIT
9; RUN: llc < %s -mtriple=thumbv7-linux-gnueabi -mcpu=cortex-a9 | FileCheck %s --check-prefix=NODIV_KRAIT
10; RUN: llc < %s -mtriple=armv7-linux-gnueabi -mcpu=krait -mattr=-hwdiv,-hwdiv-arm | FileCheck %s --check-prefix=NODIV_KRAIT
11
12; check if correct instruction is emitted by integrated assembler
13; RUN: llc < %s -mtriple=armv7-linux-gnueabi -mcpu=krait -filetype=obj | llvm-objdump -mcpu=krait -triple armv7-linux-gnueabi -d - | FileCheck %s --check-prefix=HWDIV
14; RUN: llc < %s -mtriple=thumbv7-linux-gnueabi -mcpu=krait -filetype=obj | llvm-objdump -mcpu=krait -triple thumbv7-linux-gnueabi -d - | FileCheck %s --check-prefix=HWDIV
15
16; arch_extension attribute
17; DIV_EXTENSION:  .cpu cortex-a9
18; DIV_EXTENSION:  .arch_extension idiv
19; NODIV_KRAIT-NOT:  .arch_extension idiv
20; HWDIV: sdiv
21
22define i32 @main() #0 {
23entry:
24  %retval = alloca i32, align 4
25  %a = alloca i32, align 4
26  %b = alloca i32, align 4
27  %c = alloca i32, align 4
28  store i32 0, i32* %retval
29  store volatile i32 100, i32* %b, align 4
30  store volatile i32 32, i32* %c, align 4
31  %0 = load volatile i32, i32* %b, align 4
32  %1 = load volatile i32, i32* %c, align 4
33  %div = sdiv i32 %0, %1
34  store volatile i32 %div, i32* %a, align 4
35  ret i32 0
36}
37