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llvm-mirror/test/CodeGen/Hexagon/bit-rie.ll
Sumanth Gundapaneni 262321d1ff [Hexagon] New HVX target features. 
This patch lets the llvm tools handle the new HVX target features that
are added by frontend (clang). The target-features are of the form
"hvx-length64b" for 64 Byte HVX mode, "hvx-length128b" for 128 Byte mode HVX.
"hvx-double" is an alias to "hvx-length128b" and is soon will be deprecated.
The hvx version target feature is upgated form "+hvx" to "+hvxv{version_number}.
Eg: "+hvxv62"

For the correct HVX code generation, the user must use the following
target features.
For 64B mode: "+hvxv62" "+hvx-length64b"
For 128B mode: "+hvxv62" "+hvx-length128b"

Clang picks a default length if none is specified. If for some reason,
no hvx-length is specified to llvm, the compilation will bail out.
There is a corresponding clang patch.

Differential Revision: https://reviews.llvm.org/D38851

llvm-svn: 316101
2017-10-18 18:07:07 +00:00

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; RUN: llc -march=hexagon < %s | FileCheck %s
; CHECK-LABEL: LBB0{{.*}}if.end
; CHECK: r[[REG:[0-9]+]] = zxth
; CHECK: lsr(r[[REG]],
target triple = "hexagon"
@g0 = external constant [146 x i16], align 8
@g1 = external constant [0 x i16], align 2
define void @fred(i32* nocapture readonly %p0, i16 signext %p1, i16* nocapture %p2, i16 signext %p3, i16 signext %p4, i16 signext %p5) #0 {
entry:
%conv = sext i16 %p1 to i32
%0 = tail call i32 @llvm.hexagon.S2.asl.r.r.sat(i32 %conv, i32 1)
%1 = tail call i32 @llvm.hexagon.A2.sath(i32 %0)
%2 = tail call i32 @llvm.hexagon.A2.addh.l16.sat.ll(i32 3, i32 %1)
%conv3 = sext i16 %p4 to i32
%cmp144 = icmp sgt i16 %p4, 0
br i1 %cmp144, label %for.body, label %for.end
for.body: ; preds = %entry, %for.body
%arrayidx.phi = phi i32* [ %arrayidx.inc, %for.body ], [ %p0, %entry ]
%i.0146.apmt = phi i32 [ %inc.apmt, %for.body ], [ 0, %entry ]
%L_temp1.0145 = phi i32 [ %5, %for.body ], [ 1, %entry ]
%3 = load i32, i32* %arrayidx.phi, align 4, !tbaa !1
%4 = tail call i32 @llvm.hexagon.A2.abssat(i32 %3)
%5 = tail call i32 @llvm.hexagon.A2.max(i32 %L_temp1.0145, i32 %4)
%inc.apmt = add nuw nsw i32 %i.0146.apmt, 1
%exitcond151 = icmp eq i32 %inc.apmt, %conv3
%arrayidx.inc = getelementptr i32, i32* %arrayidx.phi, i32 1
br i1 %exitcond151, label %for.end, label %for.body, !llvm.loop !5
for.end: ; preds = %for.body, %entry
%L_temp1.0.lcssa = phi i32 [ 1, %entry ], [ %5, %for.body ]
%6 = tail call i32 @llvm.hexagon.S2.clbnorm(i32 %L_temp1.0.lcssa)
%arrayidx6 = getelementptr inbounds [146 x i16], [146 x i16]* @g0, i32 0, i32 %conv3
%7 = load i16, i16* %arrayidx6, align 2, !tbaa !7
%conv7 = sext i16 %7 to i32
%8 = tail call i32 @llvm.hexagon.A2.subh.l16.sat.ll(i32 %6, i32 %conv7)
br i1 %cmp144, label %for.body14.lr.ph, label %for.end29
for.body14.lr.ph: ; preds = %for.end
%sext132 = shl i32 %8, 16
%conv17 = ashr exact i32 %sext132, 16
br label %for.body14
for.body14: ; preds = %for.body14, %for.body14.lr.ph
%arrayidx16.phi = phi i32* [ %p0, %for.body14.lr.ph ], [ %arrayidx16.inc, %for.body14 ]
%i.1143.apmt = phi i32 [ 0, %for.body14.lr.ph ], [ %inc28.apmt, %for.body14 ]
%L_temp.0142 = phi i32 [ 0, %for.body14.lr.ph ], [ %12, %for.body14 ]
%9 = load i32, i32* %arrayidx16.phi, align 4, !tbaa !1
%10 = tail call i32 @llvm.hexagon.S2.asl.r.r.sat(i32 %9, i32 %conv17)
%11 = tail call i32 @llvm.hexagon.A2.asrh(i32 %10)
%sext133 = shl i32 %11, 16
%conv23 = ashr exact i32 %sext133, 16
%12 = tail call i32 @llvm.hexagon.M2.mpy.acc.sat.ll.s0(i32 %L_temp.0142, i32 %conv23, i32 %conv23)
%inc28.apmt = add nuw nsw i32 %i.1143.apmt, 1
%exitcond = icmp eq i32 %inc28.apmt, %conv3
%arrayidx16.inc = getelementptr i32, i32* %arrayidx16.phi, i32 1
br i1 %exitcond, label %for.end29, label %for.body14
for.end29: ; preds = %for.body14, %for.end
%L_temp.0.lcssa = phi i32 [ 0, %for.end ], [ %12, %for.body14 ]
%13 = tail call i32 @llvm.hexagon.A2.subh.l16.sat.ll(i32 %conv3, i32 1)
%cmp31 = icmp sgt i32 %13, 0
br i1 %cmp31, label %if.then, label %if.end
if.then: ; preds = %for.end29
%arrayidx34 = getelementptr inbounds [0 x i16], [0 x i16]* @g1, i32 0, i32 %conv3
%14 = load i16, i16* %arrayidx34, align 2, !tbaa !7
%cmp.i = icmp eq i32 %L_temp.0.lcssa, -2147483648
%cmp1.i = icmp eq i16 %14, -32768
%or.cond.i = and i1 %cmp.i, %cmp1.i
br i1 %or.cond.i, label %if.end, label %if.else.i
if.else.i: ; preds = %if.then
%conv3.i = sext i16 %14 to i32
%15 = tail call i32 @llvm.hexagon.M2.hmmpyl.s1(i32 %L_temp.0.lcssa, i32 %conv3.i) #2
%16 = tail call i64 @llvm.hexagon.M2.mpyd.ll.s1(i32 %conv3.i, i32 %L_temp.0.lcssa) #2
%conv5.i = trunc i64 %16 to i32
%phitmp = and i32 %conv5.i, 65535
br label %if.end
if.end: ; preds = %if.else.i, %if.then, %for.end29
%L_temp.2 = phi i32 [ %L_temp.0.lcssa, %for.end29 ], [ %15, %if.else.i ], [ 2147483647, %if.then ]
%lsb.0 = phi i32 [ 0, %for.end29 ], [ %phitmp, %if.else.i ], [ 65535, %if.then ]
%sext = shl i32 %8, 16
%conv35 = ashr exact i32 %sext, 16
%17 = tail call i32 @llvm.hexagon.A2.subh.l16.sat.ll(i32 %conv35, i32 16)
%18 = tail call i32 @llvm.hexagon.S2.asl.r.r.sat(i32 %17, i32 1)
%19 = tail call i32 @llvm.hexagon.A2.sath(i32 %18)
%20 = tail call i32 @llvm.hexagon.S2.clbnorm(i32 %L_temp.2)
%sext123 = shl i32 %20, 16
%conv38 = ashr exact i32 %sext123, 16
%sext124 = shl i32 %19, 16
%conv39 = ashr exact i32 %sext124, 16
%21 = tail call i32 @llvm.hexagon.A2.addh.l16.sat.ll(i32 %conv38, i32 %conv39)
%22 = tail call i32 @llvm.hexagon.S2.asl.r.r.sat(i32 %L_temp.2, i32 %conv38)
%23 = tail call i32 @llvm.hexagon.A2.zxth(i32 %lsb.0)
%24 = tail call i32 @llvm.hexagon.A2.subh.l16.sat.ll(i32 16, i32 %conv38)
%25 = tail call i32 @llvm.hexagon.S2.lsr.r.r(i32 %23, i32 %24)
%sext125 = shl i32 %25, 16
%conv45 = ashr exact i32 %sext125, 16
%26 = tail call i32 @llvm.hexagon.A2.addsat(i32 %22, i32 %conv45)
%sext126 = shl i32 %2, 16
%conv46 = ashr exact i32 %sext126, 16
%sext127 = shl i32 %21, 16
%conv47 = ashr exact i32 %sext127, 16
%27 = tail call i32 @llvm.hexagon.A2.addh.l16.sat.ll(i32 %conv46, i32 %conv47)
%sext128 = shl i32 %27, 16
%conv49 = ashr exact i32 %sext128, 16
%cmp50 = icmp sgt i32 %sext128, 327679
%tobool = icmp eq i16 %p5, 0
%or.cond = or i1 %tobool, %cmp50
br i1 %or.cond, label %if.else68, label %if.then53
if.then53: ; preds = %if.end
%28 = tail call i32 @llvm.hexagon.S2.asl.r.r.sat(i32 %conv49, i32 1)
%29 = tail call i32 @llvm.hexagon.A2.sath(i32 %28)
%30 = tail call i32 @llvm.hexagon.A2.subsat(i32 %26, i32 1276901417)
%cmp56 = icmp slt i32 %30, 0
br i1 %cmp56, label %if.then58, label %if.else
if.then58: ; preds = %if.then53
%sext131 = shl i32 %29, 16
%conv59 = ashr exact i32 %sext131, 16
%31 = tail call i32 @llvm.hexagon.A2.addh.l16.sat.ll(i32 %conv59, i32 2)
br label %if.end80
if.else: ; preds = %if.then53
%32 = tail call i32 @llvm.hexagon.A2.subsat(i32 %26, i32 1805811301)
%cmp61 = icmp slt i32 %32, 0
br i1 %cmp61, label %if.then63, label %if.end80
if.then63: ; preds = %if.else
%sext130 = shl i32 %29, 16
%conv64 = ashr exact i32 %sext130, 16
%33 = tail call i32 @llvm.hexagon.A2.addh.l16.sat.ll(i32 %conv64, i32 1)
br label %if.end80
if.else68: ; preds = %if.end
%34 = tail call i32 @llvm.hexagon.A2.subsat(i32 %26, i32 1518500250)
%cmp69 = icmp slt i32 %34, 0
br i1 %cmp69, label %if.then71, label %if.end74
if.then71: ; preds = %if.else68
%35 = tail call i32 @llvm.hexagon.A2.addh.l16.sat.ll(i32 %conv49, i32 1)
br label %if.end74
if.end74: ; preds = %if.then71, %if.else68
%m.0.in = phi i32 [ %35, %if.then71 ], [ %27, %if.else68 ]
br i1 %tobool, label %if.end80, label %if.then76
if.then76: ; preds = %if.end74
%sext129 = shl i32 %m.0.in, 16
%conv77 = ashr exact i32 %sext129, 16
%36 = tail call i32 @llvm.hexagon.A2.addh.l16.sat.ll(i32 %conv77, i32 5)
br label %if.end80
if.end80: ; preds = %if.end74, %if.then76, %if.then58, %if.then63, %if.else
%m.1.in = phi i32 [ %31, %if.then58 ], [ %33, %if.then63 ], [ %29, %if.else ], [ %36, %if.then76 ], [ %m.0.in, %if.end74 ]
%m.1 = trunc i32 %m.1.in to i16
%cmp.i135 = icmp slt i16 %m.1, 0
%var_out.0.i136 = select i1 %cmp.i135, i16 0, i16 %m.1
%conv81 = sext i16 %p3 to i32
%37 = tail call i32 @llvm.hexagon.A2.subh.l16.sat.ll(i32 %conv81, i32 1)
%conv82 = trunc i32 %37 to i16
%cmp.i134 = icmp sgt i16 %var_out.0.i136, %conv82
%var_out.0.i = select i1 %cmp.i134, i16 %conv82, i16 %var_out.0.i136
store i16 %var_out.0.i, i16* %p2, align 2, !tbaa !7
ret void
}
declare i32 @llvm.hexagon.A2.abssat(i32) #2
declare i32 @llvm.hexagon.A2.addh.l16.sat.ll(i32, i32) #2
declare i32 @llvm.hexagon.A2.addsat(i32, i32) #2
declare i32 @llvm.hexagon.A2.asrh(i32) #2
declare i32 @llvm.hexagon.A2.max(i32, i32) #2
declare i32 @llvm.hexagon.A2.sath(i32) #2
declare i32 @llvm.hexagon.A2.subh.l16.sat.ll(i32, i32) #2
declare i32 @llvm.hexagon.A2.subsat(i32, i32) #2
declare i32 @llvm.hexagon.A2.zxth(i32) #2
declare i32 @llvm.hexagon.M2.hmmpyl.s1(i32, i32) #2
declare i32 @llvm.hexagon.M2.mpy.acc.sat.ll.s0(i32, i32, i32) #2
declare i32 @llvm.hexagon.S2.asl.r.r.sat(i32, i32) #2
declare i32 @llvm.hexagon.S2.asr.r.r.sat(i32, i32) #2
declare i32 @llvm.hexagon.S2.clbnorm(i32) #2
declare i32 @llvm.hexagon.S2.lsr.r.r(i32, i32) #2
declare i64 @llvm.hexagon.M2.mpyd.ll.s1(i32, i32) #2
declare void @llvm.lifetime.end.p0i8(i64, i8* nocapture) #1
declare void @llvm.lifetime.start.p0i8(i64, i8* nocapture) #1
attributes #0 = { norecurse nounwind "target-cpu"="hexagonv60" "target-features"="+hvx,,+hvx-length64b" "unsafe-fp-math"="false" "use-soft-float"="false" }
attributes #1 = { argmemonly nounwind }
attributes #2 = { nounwind readnone }
!1 = !{!2, !2, i64 0}
!2 = !{!"int", !3, i64 0}
!3 = !{!"omnipotent char", !4, i64 0}
!4 = !{!"Simple C/C++ TBAA"}
!5 = distinct !{!5, !6}
!6 = !{!"llvm.loop.threadify", i32 81508608}
!7 = !{!8, !8, i64 0}
!8 = !{!"short", !3, i64 0}
!9 = distinct !{!9, !10}
!10 = !{!"llvm.loop.threadify", i32 1441813}
!11 = distinct !{!11, !10}
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