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5a0e60425f
The lvsl permutation control instruction is a function only of the alignment of the pointer operand (relative to the 16-byte natural alignment of Altivec vectors). As a result, multiple lvsl intrinsics where the operands differ by a multiple of 16 can be combined. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@182708 91177308-0d34-0410-b5e6-96231b3b80d8
52 lines
2.0 KiB
LLVM
52 lines
2.0 KiB
LLVM
; RUN: llc < %s -mcpu=g5 | FileCheck %s
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; RUN: llc < %s -mcpu=g5 | FileCheck %s -check-prefix=CHECK-PC
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target datalayout = "E-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-f128:128:128-v128:128:128-n32:64"
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target triple = "powerpc64-unknown-linux-gnu"
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define void @foo(float* noalias nocapture %a, float* noalias nocapture %b) #0 {
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vector.ph:
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br label %vector.body
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vector.body: ; preds = %vector.body, %vector.ph
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%index = phi i64 [ 0, %vector.ph ], [ %index.next, %vector.body ]
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%0 = getelementptr inbounds float* %b, i64 %index
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%1 = bitcast float* %0 to <4 x float>*
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%wide.load = load <4 x float>* %1, align 4
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%.sum11 = or i64 %index, 4
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%2 = getelementptr float* %b, i64 %.sum11
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%3 = bitcast float* %2 to <4 x float>*
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%wide.load8 = load <4 x float>* %3, align 4
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%4 = fadd <4 x float> %wide.load, <float 1.000000e+00, float 1.000000e+00, float 1.000000e+00, float 1.000000e+00>
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%5 = fadd <4 x float> %wide.load8, <float 1.000000e+00, float 1.000000e+00, float 1.000000e+00, float 1.000000e+00>
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%6 = getelementptr inbounds float* %a, i64 %index
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%7 = bitcast float* %6 to <4 x float>*
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store <4 x float> %4, <4 x float>* %7, align 4
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%.sum12 = or i64 %index, 4
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%8 = getelementptr float* %a, i64 %.sum12
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%9 = bitcast float* %8 to <4 x float>*
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store <4 x float> %5, <4 x float>* %9, align 4
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%index.next = add i64 %index, 8
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%10 = icmp eq i64 %index.next, 16000
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br i1 %10, label %for.end, label %vector.body
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; CHECK: @foo
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; CHECK: lvx [[CNST:[0-9]+]],
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; CHECK-DAG: lvsl [[PC:[0-9]+]], [[B1:[0-9]+]], [[B2:[0-9]+]]
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; CHECK-DAG: lvx [[LD1:[0-9]+]], [[B1]], [[B2]]
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; CHECK-DAG: add [[B3:[0-9]+]], [[B1]], [[B2]]
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; CHECK-DAG: lvx [[LD2:[0-9]+]], [[B3]],
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; CHECK-DAG: vperm [[R1:[0-9]+]], [[LD1]], [[LD2]], [[PC]]
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; CHECK: vaddfp {{[0-9]+}}, [[R1]], [[CNST]]
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; CHECK: blr
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; CHECK-PC: @foo
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; CHECK-PC: lvsl
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; CHECK-PC-NOT: lvsl
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; CHECK-PC: blr
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for.end: ; preds = %vector.body
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ret void
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}
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attributes #0 = { nounwind }
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