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[RISCV] Add ICmp and FCmp to shouldSinkOperands.

This commit is contained in:
Craig Topper 2021-10-26 22:23:48 -07:00
parent 4283168603
commit 2783a5cfaf
2 changed files with 81 additions and 2 deletions
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2
llvm/lib/Target/RISCV/RISCVISelLowering.cpp
View File

@ -1104,6 +1104,8 @@ bool RISCVTargetLowering::shouldSinkOperands(
case Instruction::FSub:
case Instruction::FMul:
case Instruction::FDiv:
case Instruction::ICmp:
case Instruction::FCmp:
return true;
case Instruction::Shl:
case Instruction::LShr:

81
llvm/test/CodeGen/RISCV/rvv/sink-splat-operands.ll
View File

@ -2156,7 +2156,7 @@ for.cond.cleanup: ; preds = %vector.body
ret void
}
define dso_local void @sink_splat_fma_scalable(float* noalias nocapture %a, float* noalias nocapture readonly %b, float %x) local_unnamed_addr #0 {
define void @sink_splat_fma_scalable(float* noalias nocapture %a, float* noalias nocapture readonly %b, float %x) {
; CHECK-LABEL: sink_splat_fma_scalable:
; CHECK: # %bb.0: # %entry
; CHECK-NEXT: csrr a7, vlenb
@ -2260,7 +2260,7 @@ for.body: ; preds = %for.body.preheader,
br i1 %cmp.not, label %for.cond.cleanup, label %for.body
}
define dso_local void @sink_splat_fma_commute_scalable(float* noalias nocapture %a, float* noalias nocapture readonly %b, float %x) local_unnamed_addr #0 {
define void @sink_splat_fma_commute_scalable(float* noalias nocapture %a, float* noalias nocapture readonly %b, float %x) {
; CHECK-LABEL: sink_splat_fma_commute_scalable:
; CHECK: # %bb.0: # %entry
; CHECK-NEXT: csrr a7, vlenb
@ -2368,3 +2368,80 @@ declare i64 @llvm.vscale.i64()
declare <4 x float> @llvm.fma.v4f32(<4 x float>, <4 x float>, <4 x float>)
declare <vscale x 2 x float> @llvm.fma.nxv2f32(<vscale x 2 x float>, <vscale x 2 x float>, <vscale x 2 x float>)
declare float @llvm.fma.f32(float, float, float)
define void @sink_splat_icmp(i32* nocapture %x, i32 signext %y) {
; CHECK-LABEL: sink_splat_icmp:
; CHECK: # %bb.0: # %entry
; CHECK-NEXT: addi a2, zero, 1024
; CHECK-NEXT: vsetivli zero, 4, e32, m1, ta, mu
; CHECK-NEXT: vmv.v.i v8, 0
; CHECK-NEXT: .LBB36_1: # %vector.body
; CHECK-NEXT: # =>This Inner Loop Header: Depth=1
; CHECK-NEXT: vle32.v v9, (a0)
; CHECK-NEXT: vmseq.vx v0, v9, a1
; CHECK-NEXT: vse32.v v8, (a0), v0.t
; CHECK-NEXT: addi a2, a2, -4
; CHECK-NEXT: addi a0, a0, 16
; CHECK-NEXT: bnez a2, .LBB36_1
; CHECK-NEXT: # %bb.2: # %for.cond.cleanup
; CHECK-NEXT: ret
entry:
%broadcast.splatinsert = insertelement <4 x i32> poison, i32 %y, i32 0
%broadcast.splat = shufflevector <4 x i32> %broadcast.splatinsert, <4 x i32> poison, <4 x i32> zeroinitializer
br label %vector.body
vector.body: ; preds = %vector.body, %entry
%index = phi i64 [ 0, %entry ], [ %index.next, %vector.body ]
%0 = getelementptr inbounds i32, i32* %x, i64 %index
%1 = bitcast i32* %0 to <4 x i32>*
%wide.load = load <4 x i32>, <4 x i32>* %1, align 4
%2 = icmp eq <4 x i32> %wide.load, %broadcast.splat
%3 = bitcast i32* %0 to <4 x i32>*
call void @llvm.masked.store.v4i32.p0v4i32(<4 x i32> zeroinitializer, <4 x i32>* %3, i32 4, <4 x i1> %2)
%index.next = add nuw i64 %index, 4
%4 = icmp eq i64 %index.next, 1024
br i1 %4, label %for.cond.cleanup, label %vector.body
for.cond.cleanup: ; preds = %vector.body
ret void
}
declare void @llvm.masked.store.v4i32.p0v4i32(<4 x i32>, <4 x i32>*, i32, <4 x i1>)
define void @sink_splat_fcmp(float* nocapture %x, float %y) {
; CHECK-LABEL: sink_splat_fcmp:
; CHECK: # %bb.0: # %entry
; CHECK-NEXT: fmv.w.x ft0, a1
; CHECK-NEXT: addi a1, zero, 1024
; CHECK-NEXT: vsetivli zero, 4, e32, m1, ta, mu
; CHECK-NEXT: vmv.v.i v8, 0
; CHECK-NEXT: .LBB37_1: # %vector.body
; CHECK-NEXT: # =>This Inner Loop Header: Depth=1
; CHECK-NEXT: vle32.v v9, (a0)
; CHECK-NEXT: vmfeq.vf v0, v9, ft0
; CHECK-NEXT: vse32.v v8, (a0), v0.t
; CHECK-NEXT: addi a1, a1, -4
; CHECK-NEXT: addi a0, a0, 16
; CHECK-NEXT: bnez a1, .LBB37_1
; CHECK-NEXT: # %bb.2: # %for.cond.cleanup
; CHECK-NEXT: ret
entry:
%broadcast.splatinsert = insertelement <4 x float> poison, float %y, i32 0
%broadcast.splat = shufflevector <4 x float> %broadcast.splatinsert, <4 x float> poison, <4 x i32> zeroinitializer
br label %vector.body
vector.body: ; preds = %vector.body, %entry
%index = phi i64 [ 0, %entry ], [ %index.next, %vector.body ]
%0 = getelementptr inbounds float, float* %x, i64 %index
%1 = bitcast float* %0 to <4 x float>*
%wide.load = load <4 x float>, <4 x float>* %1, align 4
%2 = fcmp fast oeq <4 x float> %wide.load, %broadcast.splat
%3 = bitcast float* %0 to <4 x float>*
call void @llvm.masked.store.v4f32.p0v4f32(<4 x float> zeroinitializer, <4 x float>* %3, i32 4, <4 x i1> %2)
%index.next = add nuw i64 %index, 4
%4 = icmp eq i64 %index.next, 1024
br i1 %4, label %for.cond.cleanup, label %vector.body
for.cond.cleanup: ; preds = %vector.body
ret void
}
declare void @llvm.masked.store.v4f32.p0v4f32(<4 x float>, <4 x float>*, i32, <4 x i1>)