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https://github.com/RPCSX/llvm.git
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388fc6a988
We match the pattern "x >= y ? x-y : 0" into "subus x, y" and two special cases if y is a constant. DAGCombiner canonicalizes those so we first have to undo the canonicalization for those cases. The pattern occurs in gzip when the loop vectorizer is enabled. Part of PR14613. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@170273 91177308-0d34-0410-b5e6-96231b3b80d8
341 lines
13 KiB
LLVM
341 lines
13 KiB
LLVM
; RUN: llc -mcpu=core2 < %s | FileCheck %s -check-prefix=SSE2
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; RUN: llc -mcpu=corei7-avx < %s | FileCheck %s -check-prefix=AVX1
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; RUN: llc -mcpu=core-avx2 < %s | FileCheck %s -check-prefix=AVX2
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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-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128"
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target triple = "x86_64-apple-macosx10.8.0"
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define void @test1(i16* nocapture %head) nounwind {
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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 i16* %head, i64 %index
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%1 = bitcast i16* %0 to <8 x i16>*
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%2 = load <8 x i16>* %1, align 2
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%3 = icmp slt <8 x i16> %2, zeroinitializer
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%4 = xor <8 x i16> %2, <i16 -32768, i16 -32768, i16 -32768, i16 -32768, i16 -32768, i16 -32768, i16 -32768, i16 -32768>
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%5 = select <8 x i1> %3, <8 x i16> %4, <8 x i16> zeroinitializer
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store <8 x i16> %5, <8 x i16>* %1, align 2
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%index.next = add i64 %index, 8
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%6 = icmp eq i64 %index.next, 16384
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br i1 %6, label %for.end, label %vector.body
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for.end: ; preds = %vector.body
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ret void
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; SSE2: @test1
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; SSE2: psubusw LCPI0_0(%rip), %xmm0
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; AVX1: @test1
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; AVX1: vpsubusw LCPI0_0(%rip), %xmm0, %xmm0
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; AVX2: @test1
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; AVX2: vpsubusw LCPI0_0(%rip), %xmm0, %xmm0
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}
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define void @test2(i16* nocapture %head) nounwind {
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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 i16* %head, i64 %index
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%1 = bitcast i16* %0 to <8 x i16>*
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%2 = load <8 x i16>* %1, align 2
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%3 = icmp ugt <8 x i16> %2, <i16 32766, i16 32766, i16 32766, i16 32766, i16 32766, i16 32766, i16 32766, i16 32766>
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%4 = add <8 x i16> %2, <i16 -32767, i16 -32767, i16 -32767, i16 -32767, i16 -32767, i16 -32767, i16 -32767, i16 -32767>
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%5 = select <8 x i1> %3, <8 x i16> %4, <8 x i16> zeroinitializer
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store <8 x i16> %5, <8 x i16>* %1, align 2
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%index.next = add i64 %index, 8
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%6 = icmp eq i64 %index.next, 16384
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br i1 %6, label %for.end, label %vector.body
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for.end: ; preds = %vector.body
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ret void
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; SSE2: @test2
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; SSE2: psubusw LCPI1_0(%rip), %xmm0
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; AVX1: @test2
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; AVX1: vpsubusw LCPI1_0(%rip), %xmm0, %xmm0
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; AVX2: @test2
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; AVX2: vpsubusw LCPI1_0(%rip), %xmm0, %xmm0
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}
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define void @test3(i16* nocapture %head, i16 zeroext %w) nounwind {
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vector.ph:
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%0 = insertelement <8 x i16> undef, i16 %w, i32 0
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%broadcast15 = shufflevector <8 x i16> %0, <8 x i16> undef, <8 x i32> zeroinitializer
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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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%1 = getelementptr inbounds i16* %head, i64 %index
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%2 = bitcast i16* %1 to <8 x i16>*
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%3 = load <8 x i16>* %2, align 2
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%4 = icmp ult <8 x i16> %3, %broadcast15
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%5 = sub <8 x i16> %3, %broadcast15
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%6 = select <8 x i1> %4, <8 x i16> zeroinitializer, <8 x i16> %5
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store <8 x i16> %6, <8 x i16>* %2, align 2
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%index.next = add i64 %index, 8
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%7 = icmp eq i64 %index.next, 16384
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br i1 %7, label %for.end, label %vector.body
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for.end: ; preds = %vector.body
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ret void
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; SSE2: @test3
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; SSE2: psubusw %xmm0, %xmm1
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; AVX1: @test3
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; AVX1: vpsubusw %xmm0, %xmm1, %xmm1
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; AVX2: @test3
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; AVX2: vpsubusw %xmm0, %xmm1, %xmm1
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}
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define void @test4(i8* nocapture %head) nounwind {
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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 i8* %head, i64 %index
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%1 = bitcast i8* %0 to <16 x i8>*
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%2 = load <16 x i8>* %1, align 1
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%3 = icmp slt <16 x i8> %2, zeroinitializer
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%4 = xor <16 x i8> %2, <i8 -128, i8 -128, i8 -128, i8 -128, i8 -128, i8 -128, i8 -128, i8 -128, i8 -128, i8 -128, i8 -128, i8 -128, i8 -128, i8 -128, i8 -128, i8 -128>
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%5 = select <16 x i1> %3, <16 x i8> %4, <16 x i8> zeroinitializer
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store <16 x i8> %5, <16 x i8>* %1, align 1
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%index.next = add i64 %index, 16
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%6 = icmp eq i64 %index.next, 16384
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br i1 %6, label %for.end, label %vector.body
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for.end: ; preds = %vector.body
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ret void
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; SSE2: @test4
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; SSE2: psubusb LCPI3_0(%rip), %xmm0
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; AVX1: @test4
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; AVX1: vpsubusb LCPI3_0(%rip), %xmm0, %xmm0
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; AVX2: @test4
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; AVX2: vpsubusb LCPI3_0(%rip), %xmm0, %xmm0
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}
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define void @test5(i8* nocapture %head) nounwind {
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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 i8* %head, i64 %index
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%1 = bitcast i8* %0 to <16 x i8>*
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%2 = load <16 x i8>* %1, align 1
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%3 = icmp ugt <16 x i8> %2, <i8 126, i8 126, i8 126, i8 126, i8 126, i8 126, i8 126, i8 126, i8 126, i8 126, i8 126, i8 126, i8 126, i8 126, i8 126, i8 126>
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%4 = add <16 x i8> %2, <i8 -127, i8 -127, i8 -127, i8 -127, i8 -127, i8 -127, i8 -127, i8 -127, i8 -127, i8 -127, i8 -127, i8 -127, i8 -127, i8 -127, i8 -127, i8 -127>
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%5 = select <16 x i1> %3, <16 x i8> %4, <16 x i8> zeroinitializer
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store <16 x i8> %5, <16 x i8>* %1, align 1
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%index.next = add i64 %index, 16
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%6 = icmp eq i64 %index.next, 16384
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br i1 %6, label %for.end, label %vector.body
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for.end: ; preds = %vector.body
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ret void
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; SSE2: @test5
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; SSE2: psubusb LCPI4_0(%rip), %xmm0
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; AVX1: @test5
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; AVX1: vpsubusb LCPI4_0(%rip), %xmm0, %xmm0
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; AVX2: @test5
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; AVX2: vpsubusb LCPI4_0(%rip), %xmm0, %xmm0
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}
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define void @test6(i8* nocapture %head, i8 zeroext %w) nounwind {
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vector.ph:
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%0 = insertelement <16 x i8> undef, i8 %w, i32 0
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%broadcast15 = shufflevector <16 x i8> %0, <16 x i8> undef, <16 x i32> zeroinitializer
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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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%1 = getelementptr inbounds i8* %head, i64 %index
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%2 = bitcast i8* %1 to <16 x i8>*
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%3 = load <16 x i8>* %2, align 1
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%4 = icmp ult <16 x i8> %3, %broadcast15
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%5 = sub <16 x i8> %3, %broadcast15
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%6 = select <16 x i1> %4, <16 x i8> zeroinitializer, <16 x i8> %5
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store <16 x i8> %6, <16 x i8>* %2, align 1
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%index.next = add i64 %index, 16
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%7 = icmp eq i64 %index.next, 16384
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br i1 %7, label %for.end, label %vector.body
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for.end: ; preds = %vector.body
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ret void
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; SSE2: @test6
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; SSE2: psubusb %xmm0, %xmm1
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; AVX1: @test6
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; AVX1: vpsubusb %xmm0, %xmm1, %xmm1
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; AVX2: @test6
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; AVX2: vpsubusb %xmm0, %xmm1, %xmm1
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}
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define void @test7(i16* nocapture %head) nounwind {
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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 i16* %head, i64 %index
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%1 = bitcast i16* %0 to <16 x i16>*
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%2 = load <16 x i16>* %1, align 2
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%3 = icmp slt <16 x i16> %2, zeroinitializer
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%4 = xor <16 x i16> %2, <i16 -32768, i16 -32768, i16 -32768, i16 -32768, i16 -32768, i16 -32768, i16 -32768, i16 -32768, i16 -32768, i16 -32768, i16 -32768, i16 -32768, i16 -32768, i16 -32768, i16 -32768, i16 -32768>
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%5 = select <16 x i1> %3, <16 x i16> %4, <16 x i16> zeroinitializer
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store <16 x i16> %5, <16 x i16>* %1, align 2
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%index.next = add i64 %index, 8
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%6 = icmp eq i64 %index.next, 16384
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br i1 %6, label %for.end, label %vector.body
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for.end: ; preds = %vector.body
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ret void
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; AVX2: @test7
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; AVX2: vpsubusw LCPI6_0(%rip), %ymm0, %ymm0
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}
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define void @test8(i16* nocapture %head) nounwind {
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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 i16* %head, i64 %index
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%1 = bitcast i16* %0 to <16 x i16>*
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%2 = load <16 x i16>* %1, align 2
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%3 = icmp ugt <16 x i16> %2, <i16 32766, i16 32766, i16 32766, i16 32766, i16 32766, i16 32766, i16 32766, i16 32766, i16 32766, i16 32766, i16 32766, i16 32766, i16 32766, i16 32766, i16 32766, i16 32766>
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%4 = add <16 x i16> %2, <i16 -32767, i16 -32767, i16 -32767, i16 -32767, i16 -32767, i16 -32767, i16 -32767, i16 -32767, i16 -32767, i16 -32767, i16 -32767, i16 -32767, i16 -32767, i16 -32767, i16 -32767, i16 -32767>
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%5 = select <16 x i1> %3, <16 x i16> %4, <16 x i16> zeroinitializer
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store <16 x i16> %5, <16 x i16>* %1, align 2
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%index.next = add i64 %index, 8
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%6 = icmp eq i64 %index.next, 16384
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br i1 %6, label %for.end, label %vector.body
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for.end: ; preds = %vector.body
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ret void
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; AVX2: @test8
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; AVX2: vpsubusw LCPI7_0(%rip), %ymm0, %ymm0
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}
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define void @test9(i16* nocapture %head, i16 zeroext %w) nounwind {
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vector.ph:
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%0 = insertelement <16 x i16> undef, i16 %w, i32 0
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%broadcast15 = shufflevector <16 x i16> %0, <16 x i16> undef, <16 x i32> zeroinitializer
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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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%1 = getelementptr inbounds i16* %head, i64 %index
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%2 = bitcast i16* %1 to <16 x i16>*
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%3 = load <16 x i16>* %2, align 2
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%4 = icmp ult <16 x i16> %3, %broadcast15
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%5 = sub <16 x i16> %3, %broadcast15
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%6 = select <16 x i1> %4, <16 x i16> zeroinitializer, <16 x i16> %5
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store <16 x i16> %6, <16 x i16>* %2, align 2
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%index.next = add i64 %index, 8
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%7 = icmp eq i64 %index.next, 16384
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br i1 %7, label %for.end, label %vector.body
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for.end: ; preds = %vector.body
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ret void
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; AVX2: @test9
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; AVX2: vpsubusw %ymm0, %ymm1, %ymm1
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}
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define void @test10(i8* nocapture %head) nounwind {
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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 i8* %head, i64 %index
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%1 = bitcast i8* %0 to <32 x i8>*
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%2 = load <32 x i8>* %1, align 1
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%3 = icmp slt <32 x i8> %2, zeroinitializer
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%4 = xor <32 x i8> %2, <i8 -128, i8 -128, i8 -128, i8 -128, i8 -128, i8 -128, i8 -128, i8 -128, i8 -128, i8 -128, i8 -128, i8 -128, i8 -128, i8 -128, i8 -128, i8 -128, i8 -128, i8 -128, i8 -128, i8 -128, i8 -128, i8 -128, i8 -128, i8 -128, i8 -128, i8 -128, i8 -128, i8 -128, i8 -128, i8 -128, i8 -128, i8 -128>
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%5 = select <32 x i1> %3, <32 x i8> %4, <32 x i8> zeroinitializer
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store <32 x i8> %5, <32 x i8>* %1, align 1
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%index.next = add i64 %index, 16
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%6 = icmp eq i64 %index.next, 16384
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br i1 %6, label %for.end, label %vector.body
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for.end: ; preds = %vector.body
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ret void
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; AVX2: @test10
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; AVX2: vpsubusb LCPI9_0(%rip), %ymm0, %ymm0
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}
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define void @test11(i8* nocapture %head) nounwind {
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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 i8* %head, i64 %index
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%1 = bitcast i8* %0 to <32 x i8>*
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%2 = load <32 x i8>* %1, align 1
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%3 = icmp ugt <32 x i8> %2, <i8 126, i8 126, i8 126, i8 126, i8 126, i8 126, i8 126, i8 126, i8 126, i8 126, i8 126, i8 126, i8 126, i8 126, i8 126, i8 126, i8 126, i8 126, i8 126, i8 126, i8 126, i8 126, i8 126, i8 126, i8 126, i8 126, i8 126, i8 126, i8 126, i8 126, i8 126, i8 126>
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%4 = add <32 x i8> %2, <i8 -127, i8 -127, i8 -127, i8 -127, i8 -127, i8 -127, i8 -127, i8 -127, i8 -127, i8 -127, i8 -127, i8 -127, i8 -127, i8 -127, i8 -127, i8 -127, i8 -127, i8 -127, i8 -127, i8 -127, i8 -127, i8 -127, i8 -127, i8 -127, i8 -127, i8 -127, i8 -127, i8 -127, i8 -127, i8 -127, i8 -127, i8 -127>
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%5 = select <32 x i1> %3, <32 x i8> %4, <32 x i8> zeroinitializer
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store <32 x i8> %5, <32 x i8>* %1, align 1
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%index.next = add i64 %index, 16
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%6 = icmp eq i64 %index.next, 16384
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br i1 %6, label %for.end, label %vector.body
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for.end: ; preds = %vector.body
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ret void
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; AVX2: @test11
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; AVX2: vpsubusb LCPI10_0(%rip), %ymm0, %ymm0
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}
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define void @test12(i8* nocapture %head, i8 zeroext %w) nounwind {
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vector.ph:
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%0 = insertelement <32 x i8> undef, i8 %w, i32 0
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%broadcast15 = shufflevector <32 x i8> %0, <32 x i8> undef, <32 x i32> zeroinitializer
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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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%1 = getelementptr inbounds i8* %head, i64 %index
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%2 = bitcast i8* %1 to <32 x i8>*
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%3 = load <32 x i8>* %2, align 1
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%4 = icmp ult <32 x i8> %3, %broadcast15
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%5 = sub <32 x i8> %3, %broadcast15
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%6 = select <32 x i1> %4, <32 x i8> zeroinitializer, <32 x i8> %5
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store <32 x i8> %6, <32 x i8>* %2, align 1
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%index.next = add i64 %index, 16
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%7 = icmp eq i64 %index.next, 16384
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br i1 %7, label %for.end, label %vector.body
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for.end: ; preds = %vector.body
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ret void
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; AVX2: @test12
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; AVX2: vpsubusb %ymm0, %ymm1, %ymm1
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}
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