derek.holloway
7502bf64a4
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61 lines
2.5 KiB
LLVM
61 lines
2.5 KiB
LLVM
; RUN: llc < %s -mtriple=x86_64-linux -mcpu=nehalem | FileCheck %s
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; RUN: llc < %s -mtriple=x86_64-win32 -mcpu=nehalem | FileCheck %s
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; Full strength reduction wouldn't reduce register pressure, so LSR should
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; stick with indexing here.
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; CHECK: movaps (%{{rsi|rdx}},%rax,4), [[X3:%xmm[0-9]+]]
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; CHECK: cvtdq2ps
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; CHECK: orps {{%xmm[0-9]+}}, [[X4:%xmm[0-9]+]]
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; CHECK: movaps [[X4]], (%{{rdi|rcx}},%rax,4)
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; CHECK: addq $4, %rax
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; CHECK: cmpl %eax, (%{{rdx|r8}})
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; CHECK-NEXT: jg
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define void @vvfloorf(ptr nocapture %y, ptr nocapture %x, ptr nocapture %n) nounwind {
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entry:
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%0 = load i32, ptr %n, align 4
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%1 = icmp sgt i32 %0, 0
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br i1 %1, label %bb, label %return
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bb:
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%indvar = phi i64 [ %indvar.next, %bb ], [ 0, %entry ]
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%tmp = shl i64 %indvar, 2
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%scevgep = getelementptr float, ptr %y, i64 %tmp
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%scevgep10 = getelementptr float, ptr %x, i64 %tmp
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%2 = load <4 x float>, ptr %scevgep10, align 16
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%3 = bitcast <4 x float> %2 to <4 x i32>
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%4 = and <4 x i32> %3, <i32 2147483647, i32 2147483647, i32 2147483647, i32 2147483647>
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%5 = bitcast <4 x i32> %4 to <4 x float>
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%6 = and <4 x i32> %3, <i32 -2147483648, i32 -2147483648, i32 -2147483648, i32 -2147483648>
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%7 = tail call <4 x float> @llvm.x86.sse.cmp.ps(<4 x float> %5, <4 x float> <float 8.388608e+06, float 8.388608e+06, float 8.388608e+06, float 8.388608e+06>, i8 5) nounwind
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%tmp.i4 = bitcast <4 x float> %7 to <4 x i32>
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%8 = xor <4 x i32> %tmp.i4, <i32 -1, i32 -1, i32 -1, i32 -1>
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%9 = and <4 x i32> %8, <i32 1258291200, i32 1258291200, i32 1258291200, i32 1258291200>
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%10 = or <4 x i32> %9, %6
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%11 = bitcast <4 x i32> %10 to <4 x float>
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%12 = fadd <4 x float> %2, %11
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%13 = fsub <4 x float> %12, %11
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%14 = tail call <4 x float> @llvm.x86.sse.cmp.ps(<4 x float> %2, <4 x float> %13, i8 1) nounwind
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%15 = bitcast <4 x float> %14 to <4 x i32>
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%16 = tail call <4 x float> @llvm.x86.sse2.cvtdq2ps(<4 x i32> %15) nounwind readnone
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%17 = fadd <4 x float> %13, %16
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%tmp.i = bitcast <4 x float> %17 to <4 x i32>
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%18 = or <4 x i32> %tmp.i, %6
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%19 = bitcast <4 x i32> %18 to <4 x float>
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store <4 x float> %19, ptr %scevgep, align 16
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%tmp12 = add i64 %tmp, 4
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%tmp13 = trunc i64 %tmp12 to i32
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%20 = load i32, ptr %n, align 4
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%21 = icmp sgt i32 %20, %tmp13
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%indvar.next = add i64 %indvar, 1
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br i1 %21, label %bb, label %return
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return:
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ret void
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}
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declare <4 x float> @llvm.x86.sse.cmp.ps(<4 x float>, <4 x float>, i8) nounwind readnone
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declare <4 x float> @llvm.x86.sse2.cvtdq2ps(<4 x i32>) nounwind readnone
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