76ede609f6
We currently coalesce v4i32 extracts from all 4 elements to 2 v2i64 extracts + shifts/sign-extends. This seems to have been added back in the days when we tended to spill vectors and reload scalars, or ended up with repeated shuffles moving everything down to 0'th index. I don't think either of these are likely these days as we have better EXTRACT_VECTOR_ELT and VECTOR_SHUFFLE handling, and the existing code tends to make it very difficult for various vector and load combines. Differential Revision: https://reviews.llvm.org/D42308 llvm-svn: 323541
57 lines
2.8 KiB
LLVM
57 lines
2.8 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
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; RUN: llc < %s -mtriple=x86_64-linux -mcpu=corei7 | FileCheck %s
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; This fixes a missing cases in the MI scheduler's constrainLocalCopy exposed by
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; PR21792
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@stuff = external constant [256 x double], align 16
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define void @func(<4 x float> %vx) {
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; CHECK-LABEL: func:
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; CHECK: # %bb.0: # %entry
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; CHECK-NEXT: pushq %rax
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; CHECK-NEXT: .cfi_def_cfa_offset 16
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; CHECK-NEXT: pand {{.*}}(%rip), %xmm0
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; CHECK-NEXT: movd %xmm0, %r8d
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; CHECK-NEXT: leaq stuff(%r8), %rdi
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; CHECK-NEXT: pextrd $1, %xmm0, %eax
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; CHECK-NEXT: leaq stuff(%rax), %rsi
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; CHECK-NEXT: pextrd $2, %xmm0, %edx
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; CHECK-NEXT: pextrd $3, %xmm0, %ecx
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; CHECK-NEXT: leaq stuff(%rdx), %rdx
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; CHECK-NEXT: leaq stuff(%rcx), %rcx
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; CHECK-NEXT: leaq stuff+8(%r8), %r8
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; CHECK-NEXT: leaq stuff+8(%rax), %r9
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; CHECK-NEXT: callq toto
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; CHECK-NEXT: popq %rax
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; CHECK-NEXT: retq
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entry:
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%tmp2 = bitcast <4 x float> %vx to <2 x i64>
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%and.i = and <2 x i64> %tmp2, <i64 8727373547504, i64 8727373547504>
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%tmp3 = bitcast <2 x i64> %and.i to <4 x i32>
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%index.sroa.0.0.vec.extract = extractelement <4 x i32> %tmp3, i32 0
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%idx.ext = sext i32 %index.sroa.0.0.vec.extract to i64
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%add.ptr = getelementptr inbounds i8, i8* bitcast ([256 x double]* @stuff to i8*), i64 %idx.ext
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%tmp4 = bitcast i8* %add.ptr to double*
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%index.sroa.0.4.vec.extract = extractelement <4 x i32> %tmp3, i32 1
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%idx.ext5 = sext i32 %index.sroa.0.4.vec.extract to i64
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%add.ptr6 = getelementptr inbounds i8, i8* bitcast ([256 x double]* @stuff to i8*), i64 %idx.ext5
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%tmp5 = bitcast i8* %add.ptr6 to double*
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%index.sroa.0.8.vec.extract = extractelement <4 x i32> %tmp3, i32 2
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%idx.ext14 = sext i32 %index.sroa.0.8.vec.extract to i64
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%add.ptr15 = getelementptr inbounds i8, i8* bitcast ([256 x double]* @stuff to i8*), i64 %idx.ext14
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%tmp6 = bitcast i8* %add.ptr15 to double*
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%index.sroa.0.12.vec.extract = extractelement <4 x i32> %tmp3, i32 3
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%idx.ext19 = sext i32 %index.sroa.0.12.vec.extract to i64
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%add.ptr20 = getelementptr inbounds i8, i8* bitcast ([256 x double]* @stuff to i8*), i64 %idx.ext19
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%tmp7 = bitcast i8* %add.ptr20 to double*
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%add.ptr46 = getelementptr inbounds i8, i8* bitcast (double* getelementptr inbounds ([256 x double], [256 x double]* @stuff, i64 0, i64 1) to i8*), i64 %idx.ext
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%tmp16 = bitcast i8* %add.ptr46 to double*
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%add.ptr51 = getelementptr inbounds i8, i8* bitcast (double* getelementptr inbounds ([256 x double], [256 x double]* @stuff, i64 0, i64 1) to i8*), i64 %idx.ext5
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%tmp17 = bitcast i8* %add.ptr51 to double*
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call void @toto(double* %tmp4, double* %tmp5, double* %tmp6, double* %tmp7, double* %tmp16, double* %tmp17)
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ret void
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}
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declare void @toto(double*, double*, double*, double*, double*, double*)
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