89ae085859
VPVectorPointer for part 0 is just the pointer operand. Simplify it after unrolling. This removes a large number of redundant GEPs with index 0. PR: https://github.com/llvm/llvm-project/pull/149735
151 lines
6.9 KiB
LLVM
151 lines
6.9 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 5
|
|
; RUN: opt -p loop-vectorize -mtriple=x86_64-apple-macosx -mcpu=skylake-avx512 -force-vector-width=4 -force-vector-interleave=1 -S %s | FileCheck %s
|
|
|
|
; Test case for https://github.com/llvm/llvm-project/issues/102934.
|
|
define void @gep_use_in_dead_block(ptr noalias %dst, ptr %src) {
|
|
; CHECK-LABEL: define void @gep_use_in_dead_block(
|
|
; CHECK-SAME: ptr noalias [[DST:%.*]], ptr [[SRC:%.*]]) #[[ATTR0:[0-9]+]] {
|
|
; CHECK-NEXT: [[ENTRY:.*]]:
|
|
; CHECK-NEXT: br i1 false, label %[[SCALAR_PH:.*]], label %[[VECTOR_PH:.*]]
|
|
; CHECK: [[VECTOR_PH]]:
|
|
; CHECK-NEXT: br label %[[VECTOR_BODY:.*]]
|
|
; CHECK: [[VECTOR_BODY]]:
|
|
; CHECK-NEXT: [[TMP0:%.*]] = phi i64 [ 0, %[[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], %[[VECTOR_BODY]] ]
|
|
; CHECK-NEXT: [[TMP4:%.*]] = getelementptr i16, ptr [[SRC]], i64 [[TMP0]]
|
|
; CHECK-NEXT: [[WIDE_LOAD:%.*]] = load <4 x i16>, ptr [[TMP4]], align 2
|
|
; CHECK-NEXT: [[TMP7:%.*]] = icmp ne <4 x i16> [[WIDE_LOAD]], splat (i16 10)
|
|
; CHECK-NEXT: [[TMP8:%.*]] = getelementptr i16, ptr [[DST]], i64 [[TMP0]]
|
|
; CHECK-NEXT: call void @llvm.masked.store.v4i16.p0(<4 x i16> zeroinitializer, ptr [[TMP8]], i32 2, <4 x i1> [[TMP7]])
|
|
; CHECK-NEXT: [[INDEX_NEXT]] = add nuw i64 [[TMP0]], 4
|
|
; CHECK-NEXT: [[TMP13:%.*]] = icmp eq i64 [[INDEX_NEXT]], 96
|
|
; CHECK-NEXT: br i1 [[TMP13]], label %[[MIDDLE_BLOCK:.*]], label %[[VECTOR_BODY]], !llvm.loop [[LOOP0:![0-9]+]]
|
|
; CHECK: [[MIDDLE_BLOCK]]:
|
|
; CHECK-NEXT: br label %[[SCALAR_PH]]
|
|
; CHECK: [[SCALAR_PH]]:
|
|
; CHECK-NEXT: [[BC_RESUME_VAL:%.*]] = phi i64 [ 96, %[[MIDDLE_BLOCK]] ], [ 0, %[[ENTRY]] ]
|
|
; CHECK-NEXT: br label %[[LOOP_HEADER:.*]]
|
|
; CHECK: [[LOOP_HEADER]]:
|
|
; CHECK-NEXT: [[IV:%.*]] = phi i64 [ [[BC_RESUME_VAL]], %[[SCALAR_PH]] ], [ [[IV_NEXT:%.*]], %[[LOOP_LATCH:.*]] ]
|
|
; CHECK-NEXT: [[GEP_SRC:%.*]] = getelementptr i16, ptr [[SRC]], i64 [[IV]]
|
|
; CHECK-NEXT: [[L:%.*]] = load i16, ptr [[GEP_SRC]], align 2
|
|
; CHECK-NEXT: [[C:%.*]] = icmp eq i16 [[L]], 10
|
|
; CHECK-NEXT: br i1 [[C]], label %[[LOOP_LATCH]], label %[[THEN:.*]]
|
|
; CHECK: [[THEN]]:
|
|
; CHECK-NEXT: [[GEP_DST:%.*]] = getelementptr i16, ptr [[DST]], i64 [[IV]]
|
|
; CHECK-NEXT: store i16 0, ptr [[GEP_DST]], align 2
|
|
; CHECK-NEXT: br label %[[LOOP_LATCH]]
|
|
; CHECK: [[DEAD:.*]]:
|
|
; CHECK-NEXT: store i16 0, ptr [[GEP_DST]], align 2
|
|
; CHECK-NEXT: br label %[[DEAD]]
|
|
; CHECK: [[LOOP_LATCH]]:
|
|
; CHECK-NEXT: [[IV_NEXT]] = add i64 [[IV]], 1
|
|
; CHECK-NEXT: [[EC:%.*]] = icmp eq i64 [[IV_NEXT]], 99
|
|
; CHECK-NEXT: br i1 [[EC]], label %[[EXIT:.*]], label %[[LOOP_HEADER]], !llvm.loop [[LOOP3:![0-9]+]]
|
|
; CHECK: [[EXIT]]:
|
|
; CHECK-NEXT: ret void
|
|
;
|
|
entry:
|
|
br label %loop.header
|
|
|
|
loop.header:
|
|
%iv = phi i64 [ 0, %entry ], [ %iv.next, %loop.latch ]
|
|
%gep.src = getelementptr i16, ptr %src, i64 %iv
|
|
%l = load i16, ptr %gep.src
|
|
%c = icmp eq i16 %l, 10
|
|
br i1 %c, label %loop.latch, label %then
|
|
|
|
then:
|
|
%gep.dst = getelementptr i16, ptr %dst, i64 %iv
|
|
store i16 0, ptr %gep.dst, align 2
|
|
br label %loop.latch
|
|
|
|
dead:
|
|
store i16 0, ptr %gep.dst, align 2
|
|
br label %dead
|
|
|
|
loop.latch:
|
|
%iv.next = add i64 %iv, 1
|
|
%ec = icmp eq i64 %iv.next, 99
|
|
br i1 %ec, label %exit, label %loop.header
|
|
|
|
exit:
|
|
ret void
|
|
}
|
|
|
|
define void @gep_use_outside_loop(ptr noalias %dst, ptr %src) {
|
|
; CHECK-LABEL: define void @gep_use_outside_loop(
|
|
; CHECK-SAME: ptr noalias [[DST:%.*]], ptr [[SRC:%.*]]) #[[ATTR0]] {
|
|
; CHECK-NEXT: [[ENTRY:.*]]:
|
|
; CHECK-NEXT: br i1 false, label %[[SCALAR_PH:.*]], label %[[VECTOR_PH:.*]]
|
|
; CHECK: [[VECTOR_PH]]:
|
|
; CHECK-NEXT: br label %[[VECTOR_BODY:.*]]
|
|
; CHECK: [[VECTOR_BODY]]:
|
|
; CHECK-NEXT: [[TMP0:%.*]] = phi i64 [ 0, %[[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], %[[VECTOR_BODY]] ]
|
|
; CHECK-NEXT: [[VEC_IND:%.*]] = phi <4 x i64> [ <i64 0, i64 1, i64 2, i64 3>, %[[VECTOR_PH]] ], [ [[VEC_IND_NEXT:%.*]], %[[VECTOR_BODY]] ]
|
|
; CHECK-NEXT: [[TMP1:%.*]] = getelementptr i16, ptr [[DST]], <4 x i64> [[VEC_IND]]
|
|
; CHECK-NEXT: [[TMP2:%.*]] = getelementptr i16, ptr [[SRC]], i64 [[TMP0]]
|
|
; CHECK-NEXT: [[WIDE_LOAD:%.*]] = load <4 x i16>, ptr [[TMP2]], align 2
|
|
; CHECK-NEXT: [[TMP5:%.*]] = icmp ne <4 x i16> [[WIDE_LOAD]], splat (i16 10)
|
|
; CHECK-NEXT: [[TMP6:%.*]] = extractelement <4 x ptr> [[TMP1]], i32 0
|
|
; CHECK-NEXT: call void @llvm.masked.store.v4i16.p0(<4 x i16> zeroinitializer, ptr [[TMP6]], i32 2, <4 x i1> [[TMP5]])
|
|
; CHECK-NEXT: [[INDEX_NEXT]] = add nuw i64 [[TMP0]], 4
|
|
; CHECK-NEXT: [[VEC_IND_NEXT]] = add <4 x i64> [[VEC_IND]], splat (i64 4)
|
|
; CHECK-NEXT: [[TMP8:%.*]] = icmp eq i64 [[INDEX_NEXT]], 96
|
|
; CHECK-NEXT: br i1 [[TMP8]], label %[[MIDDLE_BLOCK:.*]], label %[[VECTOR_BODY]], !llvm.loop [[LOOP4:![0-9]+]]
|
|
; CHECK: [[MIDDLE_BLOCK]]:
|
|
; CHECK-NEXT: br label %[[SCALAR_PH]]
|
|
; CHECK: [[SCALAR_PH]]:
|
|
; CHECK-NEXT: [[BC_RESUME_VAL:%.*]] = phi i64 [ 96, %[[MIDDLE_BLOCK]] ], [ 0, %[[ENTRY]] ]
|
|
; CHECK-NEXT: br label %[[LOOP_HEADER:.*]]
|
|
; CHECK: [[LOOP_HEADER]]:
|
|
; CHECK-NEXT: [[IV:%.*]] = phi i64 [ [[BC_RESUME_VAL]], %[[SCALAR_PH]] ], [ [[IV_NEXT:%.*]], %[[LOOP_LATCH:.*]] ]
|
|
; CHECK-NEXT: [[GEP_DST:%.*]] = getelementptr i16, ptr [[DST]], i64 [[IV]]
|
|
; CHECK-NEXT: [[GEP_SRC:%.*]] = getelementptr i16, ptr [[SRC]], i64 [[IV]]
|
|
; CHECK-NEXT: [[L:%.*]] = load i16, ptr [[GEP_SRC]], align 2
|
|
; CHECK-NEXT: [[C:%.*]] = icmp eq i16 [[L]], 10
|
|
; CHECK-NEXT: br i1 [[C]], label %[[LOOP_LATCH]], label %[[THEN:.*]]
|
|
; CHECK: [[THEN]]:
|
|
; CHECK-NEXT: store i16 0, ptr [[GEP_DST]], align 2
|
|
; CHECK-NEXT: br label %[[LOOP_LATCH]]
|
|
; CHECK: [[LOOP_LATCH]]:
|
|
; CHECK-NEXT: [[IV_NEXT]] = add i64 [[IV]], 1
|
|
; CHECK-NEXT: [[EC:%.*]] = icmp eq i64 [[IV_NEXT]], 99
|
|
; CHECK-NEXT: br i1 [[EC]], label %[[EXIT:.*]], label %[[LOOP_HEADER]], !llvm.loop [[LOOP5:![0-9]+]]
|
|
; CHECK: [[EXIT]]:
|
|
; CHECK-NEXT: [[GEP_DST_LCSSA:%.*]] = phi ptr [ [[GEP_DST]], %[[LOOP_LATCH]] ]
|
|
; CHECK-NEXT: store i16 0, ptr [[GEP_DST_LCSSA]], align 2
|
|
; CHECK-NEXT: ret void
|
|
;
|
|
entry:
|
|
br label %loop.header
|
|
|
|
loop.header:
|
|
%iv = phi i64 [ 0, %entry ], [ %iv.next, %loop.latch ]
|
|
%gep.dst = getelementptr i16, ptr %dst, i64 %iv
|
|
%gep.src = getelementptr i16, ptr %src, i64 %iv
|
|
%l = load i16, ptr %gep.src
|
|
%c = icmp eq i16 %l, 10
|
|
br i1 %c, label %loop.latch, label %then
|
|
|
|
then:
|
|
store i16 0, ptr %gep.dst, align 2
|
|
br label %loop.latch
|
|
|
|
loop.latch:
|
|
%iv.next = add i64 %iv, 1
|
|
%ec = icmp eq i64 %iv.next, 99
|
|
br i1 %ec, label %exit, label %loop.header
|
|
|
|
exit:
|
|
store i16 0, ptr %gep.dst, align 2
|
|
ret void
|
|
}
|
|
;.
|
|
; CHECK: [[LOOP0]] = distinct !{[[LOOP0]], [[META1:![0-9]+]], [[META2:![0-9]+]]}
|
|
; CHECK: [[META1]] = !{!"llvm.loop.isvectorized", i32 1}
|
|
; CHECK: [[META2]] = !{!"llvm.loop.unroll.runtime.disable"}
|
|
; CHECK: [[LOOP3]] = distinct !{[[LOOP3]], [[META2]], [[META1]]}
|
|
; CHECK: [[LOOP4]] = distinct !{[[LOOP4]], [[META1]], [[META2]]}
|
|
; CHECK: [[LOOP5]] = distinct !{[[LOOP5]], [[META2]], [[META1]]}
|
|
;.
|