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| author | Dale Johannesen <dalej@apple.com> | 2010-07-29 20:10:08 +0000 |
|---|---|---|
| committer | Dale Johannesen <dalej@apple.com> | 2010-07-29 20:10:08 +0000 |
| commit | f630c712b17cae45e8cf9bc670c8b1695c37c3c6 (patch) | |
| tree | 41395b80a5f4846359b04920017ecb5bf96d84df /test | |
| parent | fb13b95162f645260cf6a5511318abd55f124f5e (diff) | |
| download | llvm-f630c712b17cae45e8cf9bc670c8b1695c37c3c6.tar.gz llvm-f630c712b17cae45e8cf9bc670c8b1695c37c3c6.tar.bz2 llvm-f630c712b17cae45e8cf9bc670c8b1695c37c3c6.tar.xz | |
Implement vector constants which are splat of
integers with mov + vdup. 8003375. This is
currently disabled by default because LICM will
not hoist a VDUP, so it pessimizes the code if
the construct occurs inside a loop (8248029).
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109799 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test')
| -rw-r--r-- | test/CodeGen/Thumb2/machine-licm-vdup.ll | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/test/CodeGen/Thumb2/machine-licm-vdup.ll b/test/CodeGen/Thumb2/machine-licm-vdup.ll new file mode 100644 index 0000000000..596cd5be2b --- /dev/null +++ b/test/CodeGen/Thumb2/machine-licm-vdup.ll @@ -0,0 +1,38 @@ +; RUN: llc < %s -mtriple=thumbv7-apple-darwin -mcpu=cortex-a8 -disable-fp-elim -arm-vdup-splat | FileCheck %s +; RUN: llc < %s -mtriple=thumbv7-apple-darwin -mcpu=cortex-a8 -relocation-model=pic -disable-fp-elim -arm-vdup-splat | FileCheck %s +; Modified version of machine-licm.ll with -arm-vdup-splat turned on, 8003375. +; Eventually this should become the default and be moved into machine-licm.ll. +; FIXME: the vdup should be hoisted out of the loop, 8248029. + +define void @t2(i8* %ptr1, i8* %ptr2) nounwind { +entry: +; CHECK: t2: +; CHECK: mov.w r3, #1065353216 + br i1 undef, label %bb1, label %bb2 + +bb1: +; CHECK-NEXT: %bb1 +; CHECK: vdup.32 q1, r3 + %indvar = phi i32 [ %indvar.next, %bb1 ], [ 0, %entry ] + %tmp1 = shl i32 %indvar, 2 + %gep1 = getelementptr i8* %ptr1, i32 %tmp1 + %tmp2 = call <4 x float> @llvm.arm.neon.vld1.v4f32(i8* %gep1) + %tmp3 = call <4 x float> @llvm.arm.neon.vmaxs.v4f32(<4 x float> <float 1.000000e+00, float 1.000000e+00, float 1.000000e+00, float 1.000000e+00>, <4 x float> %tmp2) + %gep2 = getelementptr i8* %ptr2, i32 %tmp1 + call void @llvm.arm.neon.vst1.v4f32(i8* %gep2, <4 x float> %tmp3) + %indvar.next = add i32 %indvar, 1 + %cond = icmp eq i32 %indvar.next, 10 + br i1 %cond, label %bb2, label %bb1 + +bb2: + ret void +} + +; CHECK-NOT: LCPI1_0: +; CHECK: .subsections_via_symbols + +declare <4 x float> @llvm.arm.neon.vld1.v4f32(i8*) nounwind readonly + +declare void @llvm.arm.neon.vst1.v4f32(i8*, <4 x float>) nounwind + +declare <4 x float> @llvm.arm.neon.vmaxs.v4f32(<4 x float>, <4 x float>) nounwind readnone |