maxjhandsome
/
llvm-project
forked from OSchip/llvm-project
1
0
Fork 0
Code Issues Pull Requests Packages Releases Wiki Activity
llvm-project/llvm/test/CodeGen/ARM/zero-cycle-zero.ll

55 lines
1.5 KiB
LLVM
Raw Normal View History

[ARM] Mark VMOV with immediate: isAsCheapAsMove. VMOVs are not strictly speaking cheap, but they are as expensive as a vector copy (VORR), so we should prefer rematerialization over splitting when it applies. rdar://problem/23754176 llvm-svn: 257545
2016-01-13 08:02:40 +08:00
; RUN: llc -mtriple=armv8 -mcpu=cyclone < %s | FileCheck %s --check-prefix=CHECK --check-prefix=CHECK-NOTSWIFT
[LLVM] Remove unwanted --check-prefix=CHECK from unit tests. NFC. Summary: Removed unwanted --check-prefix=CHECK from numerous unit tests. Reviewers: t.p.northover, dblaikie, uweigand, MatzeB, tstellarAMD, mcrosier Subscribers: mcrosier, dsanders Differential Revision: http://reviews.llvm.org/D19279 llvm-svn: 266834
2016-04-20 07:51:52 +08:00
; RUN: llc -mtriple=armv8 -mcpu=swift < %s | FileCheck %s
[ARM] Mark VMOV with immediate: isAsCheapAsMove. VMOVs are not strictly speaking cheap, but they are as expensive as a vector copy (VORR), so we should prefer rematerialization over splitting when it applies. rdar://problem/23754176 llvm-svn: 257545
2016-01-13 08:02:40 +08:00
; RUN: llc -mtriple=armv8 -mcpu=cortex-a57 < %s | FileCheck %s --check-prefix=CHECK --check-prefix=CHECK-NOTSWIFT
ARM: add cyclone CPU with ZeroCycleZeroing feature. The Cyclone CPU is similar to swift for most LLVM purposes, but does have two preferred instructions for zeroing a VFP register. This teaches LLVM about them. llvm-svn: 205309
2014-04-01 21:22:02 +08:00
declare arm_aapcs_vfpcc void @take_vec64(<2 x i32>)
define void @test_vec64() {
[ARM] Mark VMOV with immediate: isAsCheapAsMove. VMOVs are not strictly speaking cheap, but they are as expensive as a vector copy (VORR), so we should prefer rematerialization over splitting when it applies. rdar://problem/23754176 llvm-svn: 257545
2016-01-13 08:02:40 +08:00
; CHECK-LABEL: test_vec64:
ARM: add cyclone CPU with ZeroCycleZeroing feature. The Cyclone CPU is similar to swift for most LLVM purposes, but does have two preferred instructions for zeroing a VFP register. This teaches LLVM about them. llvm-svn: 205309
2014-04-01 21:22:02 +08:00
call arm_aapcs_vfpcc void @take_vec64(<2 x i32> <i32 0, i32 0>)
call arm_aapcs_vfpcc void @take_vec64(<2 x i32> <i32 0, i32 0>)
[ARM] Mark VMOV with immediate: isAsCheapAsMove. VMOVs are not strictly speaking cheap, but they are as expensive as a vector copy (VORR), so we should prefer rematerialization over splitting when it applies. rdar://problem/23754176 llvm-svn: 257545
2016-01-13 08:02:40 +08:00
; CHECK-NOTSWIFT-NOT: vmov.f64 d0,
; CHECK: vmov.i32 d0, #0
; CHECK: bl
; CHECK: vmov.i32 d0, #0
; CHECK: bl
ARM: add cyclone CPU with ZeroCycleZeroing feature. The Cyclone CPU is similar to swift for most LLVM purposes, but does have two preferred instructions for zeroing a VFP register. This teaches LLVM about them. llvm-svn: 205309
2014-04-01 21:22:02 +08:00
ret void
}
declare arm_aapcs_vfpcc void @take_vec128(<8 x i16>)
define void @test_vec128() {
[ARM] Mark VMOV with immediate: isAsCheapAsMove. VMOVs are not strictly speaking cheap, but they are as expensive as a vector copy (VORR), so we should prefer rematerialization over splitting when it applies. rdar://problem/23754176 llvm-svn: 257545
2016-01-13 08:02:40 +08:00
; CHECK-LABEL: test_vec128:
ARM: add cyclone CPU with ZeroCycleZeroing feature. The Cyclone CPU is similar to swift for most LLVM purposes, but does have two preferred instructions for zeroing a VFP register. This teaches LLVM about them. llvm-svn: 205309
2014-04-01 21:22:02 +08:00
call arm_aapcs_vfpcc void @take_vec128(<8 x i16> <i16 0, i16 0, i16 0, i16 0, i16 0, i16 0, i16 0, i16 0>)
call arm_aapcs_vfpcc void @take_vec128(<8 x i16> <i16 0, i16 0, i16 0, i16 0, i16 0, i16 0, i16 0, i16 0>)
[ARM] Mark VMOV with immediate: isAsCheapAsMove. VMOVs are not strictly speaking cheap, but they are as expensive as a vector copy (VORR), so we should prefer rematerialization over splitting when it applies. rdar://problem/23754176 llvm-svn: 257545
2016-01-13 08:02:40 +08:00
; CHECK-NOT: vmov.f64 [[ZEROREG:d[0-9]+]],
; CHECK: vmov.i32 q0, #0
; CHECK: bl
; CHECK: vmov.i32 q0, #0
; CHECK: bl
ARM: add cyclone CPU with ZeroCycleZeroing feature. The Cyclone CPU is similar to swift for most LLVM purposes, but does have two preferred instructions for zeroing a VFP register. This teaches LLVM about them. llvm-svn: 205309
2014-04-01 21:22:02 +08:00
ret void
}
declare void @take_i32(i32)
define void @test_i32() {
[ARM] Mark VMOV with immediate: isAsCheapAsMove. VMOVs are not strictly speaking cheap, but they are as expensive as a vector copy (VORR), so we should prefer rematerialization over splitting when it applies. rdar://problem/23754176 llvm-svn: 257545
2016-01-13 08:02:40 +08:00
; CHECK-LABEL: test_i32:
ARM: add cyclone CPU with ZeroCycleZeroing feature. The Cyclone CPU is similar to swift for most LLVM purposes, but does have two preferred instructions for zeroing a VFP register. This teaches LLVM about them. llvm-svn: 205309
2014-04-01 21:22:02 +08:00
call arm_aapcs_vfpcc void @take_i32(i32 0)
call arm_aapcs_vfpcc void @take_i32(i32 0)
[ARM] Mark VMOV with immediate: isAsCheapAsMove. VMOVs are not strictly speaking cheap, but they are as expensive as a vector copy (VORR), so we should prefer rematerialization over splitting when it applies. rdar://problem/23754176 llvm-svn: 257545
2016-01-13 08:02:40 +08:00
; CHECK-NOTSWIFT-NOT: vmov.f64 [[ZEROREG:d[0-9]+]],
; CHECK: mov r0, #0
; CHECK: bl
; CHECK: mov r0, #0
; CHECK: bl
ARM: add cyclone CPU with ZeroCycleZeroing feature. The Cyclone CPU is similar to swift for most LLVM purposes, but does have two preferred instructions for zeroing a VFP register. This teaches LLVM about them. llvm-svn: 205309
2014-04-01 21:22:02 +08:00
; It doesn't particularly matter what Swift does here, there isn't carefully
; crafted behaviour that we might break in Cyclone.
ret void
}