diff options
| author | Tim Northover <tnorthover@apple.com> | 2015-08-03 17:20:10 +0000 |
|---|---|---|
| committer | Tim Northover <tnorthover@apple.com> | 2015-08-03 17:20:10 +0000 |
| commit | 8927f6cd0f8d7614e8682a2da08f0a9769be9603 (patch) | |
| tree | 5168233bad37daacbf5e2546bad0e4da60ee12e8 /test/CodeGen | |
| parent | 268a7555856b12015465c2b5c2e513529f4fb32c (diff) | |
ARM: prefer allocating VFP regs at stride 4 on Darwin.
This is necessary for WatchOS support, where the compact unwind format assumes
this kind of layout. For now we only want this on Swift-like CPUs though, where
it's been the Xcode behaviour for ages. Also, since it can expand the prologue
we don't want it at -Oz.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@243884 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test/CodeGen')
| -rw-r--r-- | test/CodeGen/ARM/fold-stack-adjust.ll | 5 | ||||
| -rw-r--r-- | test/CodeGen/ARM/vfp-reg-stride.ll | 33 |
2 files changed, 34 insertions, 4 deletions
diff --git a/test/CodeGen/ARM/fold-stack-adjust.ll b/test/CodeGen/ARM/fold-stack-adjust.ll index b62d0dfee07..99174213562 100644 --- a/test/CodeGen/ARM/fold-stack-adjust.ll +++ b/test/CodeGen/ARM/fold-stack-adjust.ll @@ -60,8 +60,6 @@ define void @check_vfp_fold() minsize { ; CHECK: vpush {d6, d7, d8, d9} ; CHECK-NOT: sub sp, ; ... -; CHECK: vldmia r[[GLOBREG]], {d8, d9} -; ... ; CHECK-NOT: add sp, ; CHECK: vpop {d6, d7, d8, d9} ; CHECKL pop {r[[GLOBREG]], pc} @@ -82,9 +80,8 @@ define void @check_vfp_fold() minsize { %var = alloca i8, i32 16 - %tmp = load %bigVec, %bigVec* @var + call void asm "", "r,~{d8},~{d9}"(i8* %var) call void @bar(i8* %var) - store %bigVec %tmp, %bigVec* @var ret void } diff --git a/test/CodeGen/ARM/vfp-reg-stride.ll b/test/CodeGen/ARM/vfp-reg-stride.ll new file mode 100644 index 00000000000..5484cc810b0 --- /dev/null +++ b/test/CodeGen/ARM/vfp-reg-stride.ll @@ -0,0 +1,33 @@ +; RUN: llc -mcpu=swift -mtriple=thumbv7s-apple-ios -o - %s | FileCheck %s --check-prefix=CHECK-STRIDE4 +; RUN: llc -mcpu=cortex-a57 -mtriple=thumbv7-linux-gnueabihf -o - %s | FileCheck %s --check-prefix=CHECK-GENERIC + +define void @test_reg_stride(double %a, double %b) { +; CHECK-STRIDE4-LABEL: test_reg_stride: +; CHECK-STRIDE4-DAG: vmov d16, r +; CHECK-STRIDE4-DAG: vmov d18, r + +; CHECK-GENERIC-LABEL: test_reg_stride: +; CHECK-GENERIC-DAG: vmov.f64 d16, {{d[01]}} +; CHECK-GENERIC-DAG: vmov.f64 d17, {{d[01]}} + + call void asm "", "~{r0},~{r1},~{d0},~{d1}"() + call arm_aapcs_vfpcc void @eat_doubles(double %a, double %b) + ret void +} + +define void @test_stride_minsize(float %a, float %b) minsize { +; CHECK-STRIDE4-LABEL: test_stride_minsize: +; CHECK-STRIDE4: vmov d2, {{r[01]}} +; CHECK-STRIDE4: vmov d3, {{r[01]}} + +; CHECK-GENERIC-LABEL: test_stride_minsize: +; CHECK-GENERIC-DAG: vmov.f32 s4, {{s[01]}} +; CHECK-GENERIC-DAG: vmov.f32 s6, {{s[01]}} + call void asm "", "~{r0},~{r1},~{s0},~{s1},~{d0},~{d1}"() + call arm_aapcs_vfpcc void @eat_floats(float %a, float %b) + ret void +} + + +declare arm_aapcs_vfpcc void @eat_doubles(double, double) +declare arm_aapcs_vfpcc void @eat_floats(float, float) |