[DAGCombiner] Revert load slicing (r192471), until I figure out why it fails on ubuntu.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@192474 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 0 insertions, 140 deletions

diff --git a/test/CodeGen/X86/load-slice.ll b/test/CodeGen/X86/load-slice.ll
deleted file mode 100644
index 83c7aa7..0000000
--- a/test/CodeGen/X86/load-slice.ll
+++ /dev/null
@@ -1,140 +0,0 @@
-; RUN: llc -mtriple x86_64-apple-macosx -combiner-stress-load-slicing < %s -o - | FileCheck %s --check-prefix=STRESS
-; RUN: llc -mtriple x86_64-apple-macosx < %s -o - | FileCheck %s --check-prefix=REGULAR
-;
-; <rdar://problem/14477220>
-
-%class.Complex = type { float, float }
-
-
-; Check that independant slices leads to independant loads then the slices leads to
-; different register file.
-;
-; The layout is:
-; LSB 0 1 2 3 | 4 5 6 7 MSB
-;       Low      High
-; The base address points to 0 and is 8-bytes aligned.
-; Low slice starts at 0 (base) and is 8-bytes aligned.
-; High slice starts at 4 (base + 4-bytes) and is 4-bytes aligned.
-;
-; STRESS-LABEL: t1:
-; Load out[out_start + 8].imm, this is base + 8 * 8 + 4.
-; STRESS: vmovss 68([[BASE:[^)]+]]), [[OUT_Imm:%xmm[0-9]+]]
-; Add high slice: out[out_start].imm, this is base + 4.
-; STRESS-NEXT: vaddss 4([[BASE]]), [[OUT_Imm]], [[RES_Imm:%xmm[0-9]+]]
-; Load out[out_start + 8].real, this is base + 8 * 8 + 0.
-; STRESS-NEXT: vmovss 64([[BASE]]), [[OUT_Real:%xmm[0-9]+]]
-; Add low slice: out[out_start].real, this is base + 0.
-; STRESS-NEXT: vaddss ([[BASE]]), [[OUT_Real]], [[RES_Real:%xmm[0-9]+]]
-; Swap Imm and Real.
-; STRESS-NEXT: vinsertps $16, [[RES_Imm]], [[RES_Real]], [[RES_Vec:%xmm[0-9]+]]
-; Put the results back into out[out_start].
-; STRESS-NEXT: vmovq [[RES_Vec]], ([[BASE]])
-;
-; Same for REGULAR, we eliminate register bank copy with each slices.
-; REGULAR-LABEL: t1:
-; Load out[out_start + 8].imm, this is base + 8 * 8 + 4.
-; REGULAR: vmovss 68([[BASE:[^)]+]]), [[OUT_Imm:%xmm[0-9]+]]
-; Add high slice: out[out_start].imm, this is base + 4.
-; REGULAR-NEXT: vaddss 4([[BASE]]), [[OUT_Imm]], [[RES_Imm:%xmm[0-9]+]]
-; Load out[out_start + 8].real, this is base + 8 * 8 + 0.
-; REGULAR-NEXT: vmovss 64([[BASE]]), [[OUT_Real:%xmm[0-9]+]]
-; Add low slice: out[out_start].real, this is base + 0.
-; REGULAR-NEXT: vaddss ([[BASE]]), [[OUT_Real]], [[RES_Real:%xmm[0-9]+]]
-; Swap Imm and Real.
-; REGULAR-NEXT: vinsertps $16, [[RES_Imm]], [[RES_Real]], [[RES_Vec:%xmm[0-9]+]]
-; Put the results back into out[out_start].
-; REGULAR-NEXT: vmovq [[RES_Vec]], ([[BASE]])
-define void @t1(%class.Complex* nocapture %out, i64 %out_start) {
-entry:
-  %arrayidx = getelementptr inbounds %class.Complex* %out, i64 %out_start
-  %tmp = bitcast %class.Complex* %arrayidx to i64*
-  %tmp1 = load i64* %tmp, align 8
-  %t0.sroa.0.0.extract.trunc = trunc i64 %tmp1 to i32
-  %tmp2 = bitcast i32 %t0.sroa.0.0.extract.trunc to float
-  %t0.sroa.2.0.extract.shift = lshr i64 %tmp1, 32
-  %t0.sroa.2.0.extract.trunc = trunc i64 %t0.sroa.2.0.extract.shift to i32
-  %tmp3 = bitcast i32 %t0.sroa.2.0.extract.trunc to float
-  %add = add i64 %out_start, 8
-  %arrayidx2 = getelementptr inbounds %class.Complex* %out, i64 %add
-  %i.i = getelementptr inbounds %class.Complex* %arrayidx2, i64 0, i32 0
-  %tmp4 = load float* %i.i, align 4
-  %add.i = fadd float %tmp4, %tmp2
-  %retval.sroa.0.0.vec.insert.i = insertelement <2 x float> undef, float %add.i, i32 0
-  %r.i = getelementptr inbounds %class.Complex* %arrayidx2, i64 0, i32 1
-  %tmp5 = load float* %r.i, align 4
-  %add5.i = fadd float %tmp5, %tmp3
-  %retval.sroa.0.4.vec.insert.i = insertelement <2 x float> %retval.sroa.0.0.vec.insert.i, float %add5.i, i32 1
-  %ref.tmp.sroa.0.0.cast = bitcast %class.Complex* %arrayidx to <2 x float>*
-  store <2 x float> %retval.sroa.0.4.vec.insert.i, <2 x float>* %ref.tmp.sroa.0.0.cast, align 4
-  ret void
-}
-
-; Function Attrs: nounwind
-declare void @llvm.memcpy.p0i8.p0i8.i64(i8* nocapture, i8* nocapture readonly, i64, i32, i1) #1
-
-; Function Attrs: nounwind
-declare void @llvm.lifetime.start(i64, i8* nocapture)
-
-; Function Attrs: nounwind
-declare void @llvm.lifetime.end(i64, i8* nocapture)
-
-; Check that we do not read outside of the chunk of bits of the original loads.
-;
-; The 64-bits should have been split in one 32-bits and one 16-bits slices.
-; The 16-bits should be zero extended to match the final type.
-;
-; The memory layout is:
-; LSB 0 1 2 3 | 4 5 | 6 7 MSB
-;      Low            High
-; The base address points to 0 and is 8-bytes aligned.
-; Low slice starts at 0 (base) and is 8-bytes aligned.
-; High slice starts at 6 (base + 6-bytes) and is 2-bytes aligned.
-;
-; STRESS-LABEL: t2:
-; STRESS: movzwl 6([[BASE:[^)]+]]), %eax
-; STRESS-NEXT: addl ([[BASE]]), %eax
-; STRESS-NEXT: ret
-;
-; For the REGULAR heuristic, this is not profitable to slice things that are not
-; next to each other in memory. Here we have a hole with bytes #4-5.
-; REGULAR-LABEL: t2:
-; REGULAR: shrq $48
-define i32 @t2(%class.Complex* nocapture %out, i64 %out_start) {
-  %arrayidx = getelementptr inbounds %class.Complex* %out, i64 %out_start
-  %bitcast = bitcast %class.Complex* %arrayidx to i64*
-  %chunk64 = load i64* %bitcast, align 8
-  %slice32_low = trunc i64 %chunk64 to i32
-  %shift48 = lshr i64 %chunk64, 48
-  %slice32_high = trunc i64 %shift48 to i32
-  %res = add i32 %slice32_high, %slice32_low
-  ret i32 %res
-}
-
-; Check that we do not optimize overlapping slices.
-;
-; The 64-bits should NOT have been split in as slices are overlapping.
-; First slice uses bytes numbered 0 to 3.
-; Second slice uses bytes numbered 6 and 7.
-; Third slice uses bytes numbered 4 to 7.
-;
-; STRESS-LABEL: t3:
-; STRESS: shrq $48
-; STRESS: shrq $32
-;
-; REGULAR-LABEL: t3:
-; REGULAR: shrq $48
-; REGULAR: shrq $32
-define i32 @t3(%class.Complex* nocapture %out, i64 %out_start) {
-  %arrayidx = getelementptr inbounds %class.Complex* %out, i64 %out_start
-  %bitcast = bitcast %class.Complex* %arrayidx to i64*
-  %chunk64 = load i64* %bitcast, align 8
-  %slice32_low = trunc i64 %chunk64 to i32
-  %shift48 = lshr i64 %chunk64, 48
-  %slice32_high = trunc i64 %shift48 to i32
-  %shift32 = lshr i64 %chunk64, 32
-  %slice32_lowhigh = trunc i64 %shift32 to i32
-  %tmpres = add i32 %slice32_high, %slice32_low
-  %res = add i32 %slice32_lowhigh, %tmpres
-  ret i32 %res
-}
-