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 22 define i32 @main() #0 { 23 entry: 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
