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| author | Sumanth Gundapaneni <sgundapa@codeaurora.org> | 2015-02-26 18:08:41 +0000 |
|---|---|---|
| committer | Sumanth Gundapaneni <sgundapa@codeaurora.org> | 2015-02-26 18:08:41 +0000 |
| commit | 28a3b86b069c05418234bd16890843ca400b8639 (patch) | |
| tree | 718794189966c82ce4ea2a45e34788714b944820 /llvm/test/CodeGen/ARM/krait-cpu-div-attribute.ll | |
| parent | a9049ea36848df64e26d3c11a11dd393fb469e79 (diff) | |
| download | bcm5719-llvm-28a3b86b069c05418234bd16890843ca400b8639.tar.gz bcm5719-llvm-28a3b86b069c05418234bd16890843ca400b8639.zip | |
Use ".arch_extension" ARM directive to support hwdiv on krait
In case of "krait" CPU, asm printer doesn't emit any ".cpu" so the
features bits are not computed. This patch lets the asm printer
emit ".cpu cortex-a9" directive for krait and the hwdiv feature is
enabled through ".arch_extension". In short, krait is treated
as "cortex-a9" with hwdiv. We can not emit ".krait" as CPU since
it is not supported bu GNU GAS yet
llvm-svn: 230651
Diffstat (limited to 'llvm/test/CodeGen/ARM/krait-cpu-div-attribute.ll')
| -rw-r--r-- | llvm/test/CodeGen/ARM/krait-cpu-div-attribute.ll | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/llvm/test/CodeGen/ARM/krait-cpu-div-attribute.ll b/llvm/test/CodeGen/ARM/krait-cpu-div-attribute.ll new file mode 100644 index 00000000000..b7a1dcc52eb --- /dev/null +++ b/llvm/test/CodeGen/ARM/krait-cpu-div-attribute.ll @@ -0,0 +1,36 @@ +; Tests the genration of ".arch_extension" attribute for hardware +; division on krait CPU. For now, krait is recognized as "cortex-a9" + hwdiv +; Also, tests for the hwdiv instruction on krait CPU + +; check for arch_extension/cpu directive +; RUN: llc < %s -mtriple=armv7-linux-gnueabi -mcpu=krait | FileCheck %s --check-prefix=DIV_EXTENSION +; RUN: llc < %s -mtriple=thumbv7-linux-gnueabi -mcpu=krait | FileCheck %s --check-prefix=DIV_EXTENSION +; RUN: llc < %s -mtriple=armv7-linux-gnueabi -mcpu=cortex-a9 | FileCheck %s --check-prefix=NODIV_KRAIT +; RUN: llc < %s -mtriple=thumbv7-linux-gnueabi -mcpu=cortex-a9 | FileCheck %s --check-prefix=NODIV_KRAIT +; RUN: llc < %s -mcpu=krait -mattr=-hwdiv,-hwdiv-arm | FileCheck %s --check-prefix=NODIV_KRAIT + +; check if correct instruction is emitted by integrated assembler +; 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 +; 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 + +; arch_extension attribute +; DIV_EXTENSION: .cpu cortex-a9 +; DIV_EXTENSION: .arch_extension idiv +; NODIV_KRAIT-NOT: .arch_extension idiv +; HWDIV: sdiv + +define i32 @main() #0 { +entry: + %retval = alloca i32, align 4 + %a = alloca i32, align 4 + %b = alloca i32, align 4 + %c = alloca i32, align 4 + store i32 0, i32* %retval + store volatile i32 100, i32* %b, align 4 + store volatile i32 32, i32* %c, align 4 + %0 = load volatile i32* %b, align 4 + %1 = load volatile i32* %c, align 4 + %div = sdiv i32 %0, %1 + store volatile i32 %div, i32* %a, align 4 + ret i32 0 +} |
