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
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
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
16 ; arch_extension attribute
17 ; DIV_EXTENSION: .cpu cortex-a9
18 ; DIV_EXTENSION: .arch_extension idiv
19 ; NODIV_KRAIT-NOT: .arch_extension idiv
22 define i32 @main() #0 {
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