498f89d188
We currently collect the ICmp and Add from an induction variable, marking them as dead so that vplan values are not created for them. This extends that to include any single use trunk from the ICmp, which allows the Add to more readily be removed too. This can help with costing vplan nodes, as the ICmp and Add are more reliably removed and are not double-counted. Differential Revision: https://reviews.llvm.org/D88873
34 lines
1.3 KiB
LLVM
34 lines
1.3 KiB
LLVM
; RUN: opt -S -loop-vectorize -force-vector-width=4 -force-vector-interleave=1 < %s | FileCheck %s
|
|
|
|
target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128-ni:1"
|
|
|
|
define void @foo() {
|
|
; CHECK-LABEL: @foo(
|
|
; CHECK: vector.body:
|
|
; CHECK-NEXT: [[INDEX:%.*]] = phi i64 [ 0, [[VECTOR_PH:%.*]] ], [ [[INDEX_NEXT:%.*]], [[VECTOR_BODY:%.*]] ]
|
|
; CHECK-NEXT: [[VEC_IND:%.*]] = phi <4 x i64> [ <i64 2, i64 3, i64 4, i64 5>, [[VECTOR_PH]] ], [ [[VEC_IND_NEXT:%.*]], [[VECTOR_BODY]] ]
|
|
; CHECK-NEXT: [[OFFSET_IDX:%.*]] = add i64 2, [[INDEX]]
|
|
; CHECK-NEXT: [[TMP7:%.*]] = add i64 [[OFFSET_IDX]], 0
|
|
; CHECK-NEXT: [[TMP8:%.*]] = add i64 [[OFFSET_IDX]], 1
|
|
; CHECK-NEXT: [[TMP9:%.*]] = add i64 [[OFFSET_IDX]], 2
|
|
; CHECK-NEXT: [[TMP10:%.*]] = add i64 [[OFFSET_IDX]], 3
|
|
; CHECK-NEXT: [[INDEX_NEXT]] = add i64 [[INDEX]], 4
|
|
; CHECK-NEXT: [[VEC_IND_NEXT]] = add <4 x i64> [[VEC_IND]], <i64 4, i64 4, i64 4, i64 4>
|
|
; CHECK-NEXT: [[TMP13:%.*]] = icmp eq i64 [[INDEX_NEXT]], 80
|
|
; CHECK-NEXT: br i1 [[TMP13]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], !llvm.loop !0
|
|
;
|
|
entry:
|
|
br label %loop
|
|
|
|
loop:
|
|
%0 = phi i64 [ 2, %entry ], [ %3, %loop ]
|
|
%1 = and i64 %0, 4294967295
|
|
%2 = trunc i64 %0 to i32
|
|
%3 = add nuw nsw i64 %1, 1
|
|
%4 = icmp sgt i32 %2, 80
|
|
br i1 %4, label %exit, label %loop
|
|
|
|
exit:
|
|
ret void
|
|
}
|