shylie/llvm-project
1
0
Fork 0
Code Issues Pull Requests Actions 6 Packages Projects Releases Wiki Activity
llvm-project/llvm/test/Transforms/LoopVectorize/version-stride-with-integer-casts.ll
Florian Hahn 50b9ca4dda
[VPlan] Simplify Plan's entry in removeBranchOnConst. (#154510) 
After https://github.com/llvm/llvm-project/pull/153643, there may be a
BranchOnCond with constant condition in the entry block.

Simplify those in removeBranchOnConst. This removes a number of
redundant conditional branch from entry blocks.

In some cases, it may also make the original scalar loop unreachable,
because we know it will never execute. In that case, we need to remove
the loop from LoopInfo, because all unreachable blocks may dominate each
other, making LoopInfo invalid. In those cases, we can also completely
remove the loop, for which I'll share a follow-up patch.

Depends on https://github.com/llvm/llvm-project/pull/153643.

PR: https://github.com/llvm/llvm-project/pull/154510
2025-09-18 19:25:05 +01:00

515 lines
25 KiB
LLVM
Raw Blame History

; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 4
; RUN: opt -passes=loop-vectorize -force-vector-width=4 -S %s | FileCheck %s
target datalayout = "e-m:o-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128"
define void @test_versioned_with_sext_use(i32 %offset, ptr %dst) {
; CHECK-LABEL: define void @test_versioned_with_sext_use(
; CHECK-SAME: i32 [[OFFSET:%.*]], ptr [[DST:%.*]]) {
; CHECK-NEXT: entry:
; CHECK-NEXT: [[OFFSET_EXT:%.*]] = sext i32 [[OFFSET]] to i64
; CHECK-NEXT: br label [[OUTER_HEADER:%.*]]
; CHECK: outer.header.loopexit:
; CHECK-NEXT: [[IV_2_NEXT_LCSSA:%.*]] = phi i64 [ [[IV_2_NEXT:%.*]], [[INNER_LOOP:%.*]] ]
; CHECK-NEXT: br label [[OUTER_HEADER]]
; CHECK: outer.header:
; CHECK-NEXT: [[IV_1:%.*]] = phi i64 [ 0, [[ENTRY:%.*]] ], [ [[IV_2_NEXT_LCSSA]], [[OUTER_HEADER_LOOPEXIT:%.*]] ]
; CHECK-NEXT: [[C:%.*]] = call i1 @cond()
; CHECK-NEXT: br i1 [[C]], label [[INNER_LOOP_PREHEADER:%.*]], label [[EXIT:%.*]]
; CHECK: inner.loop.preheader:
; CHECK-NEXT: br label [[VECTOR_SCEVCHECK:%.*]]
; CHECK: vector.scevcheck:
; CHECK-NEXT: [[IDENT_CHECK:%.*]] = icmp ne i32 [[OFFSET]], 1
; CHECK-NEXT: br i1 [[IDENT_CHECK]], label [[SCALAR_PH:%.*]], label [[VECTOR_PH:%.*]]
; CHECK: vector.ph:
; CHECK-NEXT: [[TMP0:%.*]] = mul i64 200, [[OFFSET_EXT]]
; CHECK-NEXT: [[IND_END:%.*]] = add i64 [[IV_1]], [[TMP0]]
; CHECK-NEXT: br label [[VECTOR_BODY:%.*]]
; CHECK: vector.body:
; CHECK-NEXT: [[INDEX:%.*]] = phi i64 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[VECTOR_BODY]] ]
; CHECK-NEXT: [[TMP1:%.*]] = mul i64 [[INDEX]], [[OFFSET_EXT]]
; CHECK-NEXT: [[TMP3:%.*]] = add i64 [[IV_1]], [[TMP1]]
; CHECK-NEXT: [[TMP4:%.*]] = getelementptr i32, ptr [[DST]], i64 [[TMP3]]
; CHECK-NEXT: store <4 x i32> zeroinitializer, ptr [[TMP4]], align 8
; CHECK-NEXT: [[INDEX_NEXT]] = add nuw i64 [[INDEX]], 4
; CHECK-NEXT: [[TMP7:%.*]] = icmp eq i64 [[INDEX_NEXT]], 200
; CHECK-NEXT: br i1 [[TMP7]], 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 [ [[IND_END]], [[MIDDLE_BLOCK]] ], [ [[IV_1]], [[VECTOR_SCEVCHECK]] ]
; CHECK-NEXT: [[BC_RESUME_VAL1:%.*]] = phi i32 [ 200, [[MIDDLE_BLOCK]] ], [ 0, [[VECTOR_SCEVCHECK]] ]
; CHECK-NEXT: br label [[INNER_LOOP]]
; CHECK: inner.loop:
; CHECK-NEXT: [[IV_2:%.*]] = phi i64 [ [[IV_2_NEXT]], [[INNER_LOOP]] ], [ [[BC_RESUME_VAL]], [[SCALAR_PH]] ]
; CHECK-NEXT: [[IV_3:%.*]] = phi i32 [ [[IV_3_NEXT:%.*]], [[INNER_LOOP]] ], [ [[BC_RESUME_VAL1]], [[SCALAR_PH]] ]
; CHECK-NEXT: [[GEP:%.*]] = getelementptr i32, ptr [[DST]], i64 [[IV_2]]
; CHECK-NEXT: store i32 0, ptr [[GEP]], align 8
; CHECK-NEXT: [[IV_2_NEXT]] = add i64 [[IV_2]], [[OFFSET_EXT]]
; CHECK-NEXT: [[IV_3_NEXT]] = add i32 [[IV_3]], 1
; CHECK-NEXT: [[EC:%.*]] = icmp eq i32 [[IV_3]], 200
; CHECK-NEXT: br i1 [[EC]], label [[OUTER_HEADER_LOOPEXIT]], label [[INNER_LOOP]], !llvm.loop [[LOOP3:![0-9]+]]
; CHECK: exit:
; CHECK-NEXT: ret void
;
entry:
%offset.ext = sext i32 %offset to i64
br label %outer.header
outer.header:
%iv.1 = phi i64 [ 0, %entry ], [ %iv.2.next, %inner.loop ]
%c = call i1 @cond()
br i1 %c, label %inner.loop, label %exit
inner.loop:
%iv.2 = phi i64 [ %iv.1, %outer.header ], [ %iv.2.next, %inner.loop ]
%iv.3 = phi i32 [ 0, %outer.header ], [ %iv.3.next, %inner.loop ]
%gep = getelementptr i32, ptr %dst, i64 %iv.2
store i32 0, ptr %gep, align 8
%iv.2.next = add i64 %iv.2, %offset.ext
%iv.3.next = add i32 %iv.3, 1
%ec = icmp eq i32 %iv.3, 200
br i1 %ec, label %outer.header, label %inner.loop
exit:
ret void
}
define void @test_versioned_with_zext_use(i32 %offset, ptr %dst) {
; CHECK-LABEL: define void @test_versioned_with_zext_use(
; CHECK-SAME: i32 [[OFFSET:%.*]], ptr [[DST:%.*]]) {
; CHECK-NEXT: entry:
; CHECK-NEXT: [[OFFSET_EXT:%.*]] = zext i32 [[OFFSET]] to i64
; CHECK-NEXT: br label [[OUTER_HEADER:%.*]]
; CHECK: outer.header.loopexit:
; CHECK-NEXT: [[IV_2_NEXT_LCSSA:%.*]] = phi i64 [ [[IV_2_NEXT:%.*]], [[INNER_LOOP:%.*]] ]
; CHECK-NEXT: br label [[OUTER_HEADER]]
; CHECK: outer.header:
; CHECK-NEXT: [[IV_1:%.*]] = phi i64 [ 0, [[ENTRY:%.*]] ], [ [[IV_2_NEXT_LCSSA]], [[OUTER_HEADER_LOOPEXIT:%.*]] ]
; CHECK-NEXT: [[C:%.*]] = call i1 @cond()
; CHECK-NEXT: br i1 [[C]], label [[INNER_LOOP_PREHEADER:%.*]], label [[EXIT:%.*]]
; CHECK: inner.loop.preheader:
; CHECK-NEXT: br label [[VECTOR_SCEVCHECK:%.*]]
; CHECK: vector.scevcheck:
; CHECK-NEXT: [[IDENT_CHECK:%.*]] = icmp ne i32 [[OFFSET]], 1
; CHECK-NEXT: br i1 [[IDENT_CHECK]], label [[SCALAR_PH:%.*]], label [[VECTOR_PH:%.*]]
; CHECK: vector.ph:
; CHECK-NEXT: [[TMP0:%.*]] = mul i64 200, [[OFFSET_EXT]]
; CHECK-NEXT: [[IND_END:%.*]] = add i64 [[IV_1]], [[TMP0]]
; CHECK-NEXT: br label [[VECTOR_BODY:%.*]]
; CHECK: vector.body:
; CHECK-NEXT: [[INDEX:%.*]] = phi i64 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[VECTOR_BODY]] ]
; CHECK-NEXT: [[TMP1:%.*]] = mul i64 [[INDEX]], [[OFFSET_EXT]]
; CHECK-NEXT: [[TMP3:%.*]] = add i64 [[IV_1]], [[TMP1]]
; CHECK-NEXT: [[TMP4:%.*]] = getelementptr i32, ptr [[DST]], i64 [[TMP3]]
; CHECK-NEXT: store <4 x i32> zeroinitializer, ptr [[TMP4]], align 8
; CHECK-NEXT: [[INDEX_NEXT]] = add nuw i64 [[INDEX]], 4
; CHECK-NEXT: [[TMP7:%.*]] = icmp eq i64 [[INDEX_NEXT]], 200
; CHECK-NEXT: br i1 [[TMP7]], 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 [ [[IND_END]], [[MIDDLE_BLOCK]] ], [ [[IV_1]], [[VECTOR_SCEVCHECK]] ]
; CHECK-NEXT: [[BC_RESUME_VAL1:%.*]] = phi i32 [ 200, [[MIDDLE_BLOCK]] ], [ 0, [[VECTOR_SCEVCHECK]] ]
; CHECK-NEXT: br label [[INNER_LOOP]]
; CHECK: inner.loop:
; CHECK-NEXT: [[IV_2:%.*]] = phi i64 [ [[IV_2_NEXT]], [[INNER_LOOP]] ], [ [[BC_RESUME_VAL]], [[SCALAR_PH]] ]
; CHECK-NEXT: [[IV_3:%.*]] = phi i32 [ [[IV_3_NEXT:%.*]], [[INNER_LOOP]] ], [ [[BC_RESUME_VAL1]], [[SCALAR_PH]] ]
; CHECK-NEXT: [[GEP:%.*]] = getelementptr i32, ptr [[DST]], i64 [[IV_2]]
; CHECK-NEXT: store i32 0, ptr [[GEP]], align 8
; CHECK-NEXT: [[IV_2_NEXT]] = add i64 [[IV_2]], [[OFFSET_EXT]]
; CHECK-NEXT: [[IV_3_NEXT]] = add i32 [[IV_3]], 1
; CHECK-NEXT: [[EC:%.*]] = icmp eq i32 [[IV_3]], 200
; CHECK-NEXT: br i1 [[EC]], label [[OUTER_HEADER_LOOPEXIT]], label [[INNER_LOOP]], !llvm.loop [[LOOP5:![0-9]+]]
; CHECK: exit:
; CHECK-NEXT: ret void
;
entry:
%offset.ext = zext i32 %offset to i64
br label %outer.header
outer.header:
%iv.1 = phi i64 [ 0, %entry ], [ %iv.2.next, %inner.loop ]
%c = call i1 @cond()
br i1 %c, label %inner.loop, label %exit
inner.loop:
%iv.2 = phi i64 [ %iv.1, %outer.header ], [ %iv.2.next, %inner.loop ]
%iv.3 = phi i32 [ 0, %outer.header ], [ %iv.3.next, %inner.loop ]
%gep = getelementptr i32, ptr %dst, i64 %iv.2
store i32 0, ptr %gep, align 8
%iv.2.next = add i64 %iv.2, %offset.ext
%iv.3.next = add i32 %iv.3, 1
%ec = icmp eq i32 %iv.3, 200
br i1 %ec, label %outer.header, label %inner.loop
exit:
ret void
}
define void @versioned_sext_use_in_gep(i32 %scale, ptr %dst, i64 %scale.2) {
; CHECK-LABEL: define void @versioned_sext_use_in_gep(
; CHECK-SAME: i32 [[SCALE:%.*]], ptr [[DST:%.*]], i64 [[SCALE_2:%.*]]) {
; CHECK-NEXT: entry:
; CHECK-NEXT: [[SCALE_EXT:%.*]] = sext i32 [[SCALE]] to i64
; CHECK-NEXT: br label [[VECTOR_SCEVCHECK:%.*]]
; CHECK: vector.scevcheck:
; CHECK-NEXT: [[IDENT_CHECK:%.*]] = icmp ne i32 [[SCALE]], 1
; CHECK-NEXT: br i1 [[IDENT_CHECK]], label [[SCALAR_PH:%.*]], label [[VECTOR_PH:%.*]]
; CHECK: vector.ph:
; CHECK-NEXT: [[TMP83:%.*]] = getelementptr i8, ptr [[DST]], i64 [[SCALE_2]]
; CHECK-NEXT: br label [[VECTOR_BODY:%.*]]
; CHECK: vector.body:
; CHECK-NEXT: [[INDEX:%.*]] = phi i64 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[VECTOR_BODY]] ]
; CHECK-NEXT: [[TMP10:%.*]] = add i64 [[INDEX]], 0
; CHECK-NEXT: [[TMP12:%.*]] = add i64 [[INDEX]], 1
; CHECK-NEXT: [[TMP14:%.*]] = add i64 [[INDEX]], 2
; CHECK-NEXT: [[TMP16:%.*]] = add i64 [[INDEX]], 3
; CHECK-NEXT: [[TMP11:%.*]] = getelementptr i8, ptr [[DST]], i64 [[TMP10]]
; CHECK-NEXT: [[TMP13:%.*]] = getelementptr i8, ptr [[DST]], i64 [[TMP12]]
; CHECK-NEXT: [[TMP15:%.*]] = getelementptr i8, ptr [[DST]], i64 [[TMP14]]
; CHECK-NEXT: [[TMP17:%.*]] = getelementptr i8, ptr [[DST]], i64 [[TMP16]]
; CHECK-NEXT: store ptr [[TMP83]], ptr [[TMP11]], align 8
; CHECK-NEXT: store ptr [[TMP83]], ptr [[TMP13]], align 8
; CHECK-NEXT: store ptr [[TMP83]], ptr [[TMP15]], align 8
; CHECK-NEXT: store ptr [[TMP83]], ptr [[TMP17]], align 8
; CHECK-NEXT: [[INDEX_NEXT]] = add nuw i64 [[INDEX]], 4
; CHECK-NEXT: [[TMP18:%.*]] = icmp eq i64 [[INDEX_NEXT]], 256
; CHECK-NEXT: br i1 [[TMP18]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], !llvm.loop [[LOOP6:![0-9]+]]
; CHECK: middle.block:
; CHECK-NEXT: br label [[EXIT:%.*]]
; CHECK: scalar.ph:
; CHECK-NEXT: br label [[LOOP:%.*]]
; CHECK: loop:
; CHECK-NEXT: [[IV:%.*]] = phi i64 [ 0, [[SCALAR_PH]] ], [ [[IV_NEXT:%.*]], [[LOOP]] ]
; CHECK-NEXT: [[IV_MUL:%.*]] = mul i64 [[IV]], [[SCALE_EXT]]
; CHECK-NEXT: [[GEP_1:%.*]] = getelementptr i8, ptr [[DST]], i64 [[IV_MUL]]
; CHECK-NEXT: [[IV_NEXT]] = add i64 [[IV]], 1
; CHECK-NEXT: [[SCALE_MUL:%.*]] = mul i64 [[SCALE_EXT]], [[SCALE_2]]
; CHECK-NEXT: [[GEP_2:%.*]] = getelementptr i8, ptr [[DST]], i64 [[SCALE_MUL]]
; CHECK-NEXT: store ptr [[GEP_2]], ptr [[GEP_1]], align 8
; CHECK-NEXT: [[EC:%.*]] = icmp eq i64 [[IV_NEXT]], 256
; CHECK-NEXT: br i1 [[EC]], label [[EXIT]], label [[LOOP]], !llvm.loop [[LOOP7:![0-9]+]]
; CHECK: exit:
; CHECK-NEXT: ret void
;
entry:
%scale.ext = sext i32 %scale to i64
br label %loop
loop:
%iv = phi i64 [ 0, %entry ], [ %iv.next, %loop ]
%iv.mul = mul i64 %iv, %scale.ext
%gep.1 = getelementptr i8, ptr %dst, i64 %iv.mul
%iv.next = add i64 %iv, 1
%scale.mul = mul i64 %scale.ext, %scale.2
%gep.2 = getelementptr i8, ptr %dst, i64 %scale.mul
store ptr %gep.2, ptr %gep.1, align 8
%ec = icmp eq i64 %iv.next, 256
br i1 %ec, label %exit, label %loop
exit:
ret void
}
declare i1 @cond()
define void @test_versioned_with_different_uses(i32 %offset, ptr noalias %dst.1, ptr %dst.2) {
; CHECK-LABEL: define void @test_versioned_with_different_uses(
; CHECK-SAME: i32 [[OFFSET:%.*]], ptr noalias [[DST_1:%.*]], ptr [[DST_2:%.*]]) {
; CHECK-NEXT: entry:
; CHECK-NEXT: [[OFFSET_EXT:%.*]] = zext i32 [[OFFSET]] to i64
; CHECK-NEXT: br label [[OUTER_HEADER:%.*]]
; CHECK: outer.header.loopexit:
; CHECK-NEXT: [[IV_2_NEXT_LCSSA:%.*]] = phi i64 [ [[IV_2_NEXT:%.*]], [[INNER_LOOP:%.*]] ]
; CHECK-NEXT: br label [[OUTER_HEADER]]
; CHECK: outer.header:
; CHECK-NEXT: [[IV_1:%.*]] = phi i64 [ 0, [[ENTRY:%.*]] ], [ [[IV_2_NEXT_LCSSA]], [[OUTER_HEADER_LOOPEXIT:%.*]] ]
; CHECK-NEXT: [[C:%.*]] = call i1 @cond()
; CHECK-NEXT: br i1 [[C]], label [[INNER_LOOP_PREHEADER:%.*]], label [[EXIT:%.*]]
; CHECK: inner.loop.preheader:
; CHECK-NEXT: br label [[VECTOR_SCEVCHECK:%.*]]
; CHECK: vector.scevcheck:
; CHECK-NEXT: [[IDENT_CHECK:%.*]] = icmp ne i32 [[OFFSET]], 1
; CHECK-NEXT: br i1 [[IDENT_CHECK]], label [[SCALAR_PH:%.*]], label [[VECTOR_PH:%.*]]
; CHECK: vector.ph:
; CHECK-NEXT: [[TMP0:%.*]] = mul i64 200, [[OFFSET_EXT]]
; CHECK-NEXT: [[IND_END:%.*]] = add i64 [[IV_1]], [[TMP0]]
; CHECK-NEXT: br label [[VECTOR_BODY:%.*]]
; CHECK: vector.body:
; CHECK-NEXT: [[INDEX:%.*]] = phi i64 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[VECTOR_BODY]] ]
; CHECK-NEXT: [[TMP1:%.*]] = mul i64 [[INDEX]], [[OFFSET_EXT]]
; CHECK-NEXT: [[TMP3:%.*]] = add i64 [[IV_1]], [[TMP1]]
; CHECK-NEXT: [[OFFSET_IDX2:%.*]] = trunc i64 [[INDEX]] to i32
; CHECK-NEXT: [[TMP4:%.*]] = add i32 [[OFFSET_IDX2]], 0
; CHECK-NEXT: [[TMP5:%.*]] = add i32 [[OFFSET_IDX2]], 1
; CHECK-NEXT: [[TMP6:%.*]] = add i32 [[OFFSET_IDX2]], 2
; CHECK-NEXT: [[TMP7:%.*]] = add i32 [[OFFSET_IDX2]], 3
; CHECK-NEXT: [[TMP8:%.*]] = getelementptr i8, ptr [[DST_1]], i32 [[TMP4]]
; CHECK-NEXT: [[TMP9:%.*]] = getelementptr i8, ptr [[DST_1]], i32 [[TMP5]]
; CHECK-NEXT: [[TMP10:%.*]] = getelementptr i8, ptr [[DST_1]], i32 [[TMP6]]
; CHECK-NEXT: [[TMP11:%.*]] = getelementptr i8, ptr [[DST_1]], i32 [[TMP7]]
; CHECK-NEXT: store i32 0, ptr [[TMP8]], align 8
; CHECK-NEXT: store i32 0, ptr [[TMP9]], align 8
; CHECK-NEXT: store i32 0, ptr [[TMP10]], align 8
; CHECK-NEXT: store i32 0, ptr [[TMP11]], align 8
; CHECK-NEXT: [[TMP12:%.*]] = getelementptr i32, ptr [[DST_2]], i64 [[TMP3]]
; CHECK-NEXT: store <4 x i32> zeroinitializer, ptr [[TMP12]], align 8
; CHECK-NEXT: [[INDEX_NEXT]] = add nuw i64 [[INDEX]], 4
; CHECK-NEXT: [[TMP15:%.*]] = icmp eq i64 [[INDEX_NEXT]], 200
; CHECK-NEXT: br i1 [[TMP15]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], !llvm.loop [[LOOP8:![0-9]+]]
; CHECK: middle.block:
; CHECK-NEXT: br label [[SCALAR_PH]]
; CHECK: scalar.ph:
; CHECK-NEXT: [[BC_RESUME_VAL:%.*]] = phi i64 [ [[IND_END]], [[MIDDLE_BLOCK]] ], [ [[IV_1]], [[VECTOR_SCEVCHECK]] ]
; CHECK-NEXT: [[BC_RESUME_VAL1:%.*]] = phi i32 [ 200, [[MIDDLE_BLOCK]] ], [ 0, [[VECTOR_SCEVCHECK]] ]
; CHECK-NEXT: br label [[INNER_LOOP]]
; CHECK: inner.loop:
; CHECK-NEXT: [[IV_2:%.*]] = phi i64 [ [[IV_2_NEXT]], [[INNER_LOOP]] ], [ [[BC_RESUME_VAL]], [[SCALAR_PH]] ]
; CHECK-NEXT: [[IV_3:%.*]] = phi i32 [ [[IV_3_NEXT:%.*]], [[INNER_LOOP]] ], [ [[BC_RESUME_VAL1]], [[SCALAR_PH]] ]
; CHECK-NEXT: [[IV_MUL:%.*]] = mul i32 [[IV_3]], [[OFFSET]]
; CHECK-NEXT: [[GEP_MUL:%.*]] = getelementptr i8, ptr [[DST_1]], i32 [[IV_MUL]]
; CHECK-NEXT: store i32 0, ptr [[GEP_MUL]], align 8
; CHECK-NEXT: [[GEP:%.*]] = getelementptr i32, ptr [[DST_2]], i64 [[IV_2]]
; CHECK-NEXT: store i32 0, ptr [[GEP]], align 8
; CHECK-NEXT: [[IV_2_NEXT]] = add i64 [[IV_2]], [[OFFSET_EXT]]
; CHECK-NEXT: [[IV_3_NEXT]] = add i32 [[IV_3]], 1
; CHECK-NEXT: [[EC:%.*]] = icmp eq i32 [[IV_3]], 200
; CHECK-NEXT: br i1 [[EC]], label [[OUTER_HEADER_LOOPEXIT]], label [[INNER_LOOP]], !llvm.loop [[LOOP9:![0-9]+]]
; CHECK: exit:
; CHECK-NEXT: ret void
;
entry:
%offset.ext = zext i32 %offset to i64
br label %outer.header
outer.header:
%iv.1 = phi i64 [ 0, %entry ], [ %iv.2.next, %inner.loop ]
%c = call i1 @cond()
br i1 %c, label %inner.loop, label %exit
inner.loop:
%iv.2 = phi i64 [ %iv.1, %outer.header ], [ %iv.2.next, %inner.loop ]
%iv.3 = phi i32 [ 0, %outer.header ], [ %iv.3.next, %inner.loop ]
%iv.mul = mul i32 %iv.3, %offset
%gep.mul = getelementptr i8, ptr %dst.1, i32 %iv.mul
store i32 0, ptr %gep.mul, align 8
%gep = getelementptr i32, ptr %dst.2, i64 %iv.2
store i32 0, ptr %gep, align 8
%iv.2.next = add i64 %iv.2, %offset.ext
%iv.3.next = add i32 %iv.3, 1
%ec = icmp eq i32 %iv.3, 200
br i1 %ec, label %outer.header, label %inner.loop
exit:
ret void
}
define void @test_versioned_with_non_ex_use(i32 %offset, ptr noalias %dst.1, ptr %dst.2) {
; CHECK-LABEL: define void @test_versioned_with_non_ex_use(
; CHECK-SAME: i32 [[OFFSET:%.*]], ptr noalias [[DST_1:%.*]], ptr [[DST_2:%.*]]) {
; CHECK-NEXT: entry:
; CHECK-NEXT: [[OFFSET_EXT:%.*]] = zext i32 [[OFFSET]] to i64
; CHECK-NEXT: [[ADD:%.*]] = add i32 [[OFFSET]], 3
; CHECK-NEXT: br label [[VECTOR_SCEVCHECK:%.*]]
; CHECK: vector.scevcheck:
; CHECK-NEXT: [[TMP0:%.*]] = sub i32 -3, [[OFFSET]]
; CHECK-NEXT: [[TMP1:%.*]] = icmp slt i32 [[ADD]], 0
; CHECK-NEXT: [[TMP2:%.*]] = select i1 [[TMP1]], i32 [[TMP0]], i32 [[ADD]]
; CHECK-NEXT: [[MUL:%.*]] = call { i32, i1 } @llvm.umul.with.overflow.i32(i32 [[TMP2]], i32 200)
; CHECK-NEXT: [[MUL_RESULT:%.*]] = extractvalue { i32, i1 } [[MUL]], 0
; CHECK-NEXT: [[MUL_OVERFLOW:%.*]] = extractvalue { i32, i1 } [[MUL]], 1
; CHECK-NEXT: [[TMP3:%.*]] = sub i32 0, [[MUL_RESULT]]
; CHECK-NEXT: [[TMP4:%.*]] = icmp slt i32 [[MUL_RESULT]], 0
; CHECK-NEXT: [[TMP5:%.*]] = icmp sgt i32 [[TMP3]], 0
; CHECK-NEXT: [[TMP6:%.*]] = select i1 [[TMP1]], i1 [[TMP5]], i1 [[TMP4]]
; CHECK-NEXT: [[TMP7:%.*]] = or i1 [[TMP6]], [[MUL_OVERFLOW]]
; CHECK-NEXT: [[IDENT_CHECK:%.*]] = icmp ne i32 [[OFFSET]], 1
; CHECK-NEXT: [[TMP8:%.*]] = or i1 [[TMP7]], [[IDENT_CHECK]]
; CHECK-NEXT: br i1 [[TMP8]], label [[SCALAR_PH:%.*]], label [[VECTOR_PH:%.*]]
; CHECK: vector.ph:
; CHECK-NEXT: [[BROADCAST_SPLATINSERT:%.*]] = insertelement <4 x i32> poison, i32 [[ADD]], i64 0
; CHECK-NEXT: [[BROADCAST_SPLAT:%.*]] = shufflevector <4 x i32> [[BROADCAST_SPLATINSERT]], <4 x i32> poison, <4 x i32> zeroinitializer
; CHECK-NEXT: br label [[VECTOR_BODY:%.*]]
; CHECK: vector.body:
; CHECK-NEXT: [[INDEX:%.*]] = phi i64 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[VECTOR_BODY]] ]
; CHECK-NEXT: [[VEC_IND:%.*]] = phi <4 x i32> [ <i32 0, i32 1, i32 2, i32 3>, [[VECTOR_PH]] ], [ [[VEC_IND_NEXT:%.*]], [[VECTOR_BODY]] ]
; CHECK-NEXT: [[TMP10:%.*]] = mul <4 x i32> [[VEC_IND]], [[BROADCAST_SPLAT]]
; CHECK-NEXT: [[TMP11:%.*]] = extractelement <4 x i32> [[TMP10]], i32 0
; CHECK-NEXT: [[TMP12:%.*]] = getelementptr i8, ptr [[DST_1]], i32 [[TMP11]]
; CHECK-NEXT: [[TMP13:%.*]] = extractelement <4 x i32> [[TMP10]], i32 1
; CHECK-NEXT: [[TMP14:%.*]] = getelementptr i8, ptr [[DST_1]], i32 [[TMP13]]
; CHECK-NEXT: [[TMP15:%.*]] = extractelement <4 x i32> [[TMP10]], i32 2
; CHECK-NEXT: [[TMP16:%.*]] = getelementptr i8, ptr [[DST_1]], i32 [[TMP15]]
; CHECK-NEXT: [[TMP17:%.*]] = extractelement <4 x i32> [[TMP10]], i32 3
; CHECK-NEXT: [[TMP18:%.*]] = getelementptr i8, ptr [[DST_1]], i32 [[TMP17]]
; CHECK-NEXT: store i32 0, ptr [[TMP12]], align 8
; CHECK-NEXT: store i32 0, ptr [[TMP14]], align 8
; CHECK-NEXT: store i32 0, ptr [[TMP16]], align 8
; CHECK-NEXT: store i32 0, ptr [[TMP18]], align 8
; CHECK-NEXT: [[TMP20:%.*]] = getelementptr i32, ptr [[DST_2]], i64 [[INDEX]]
; CHECK-NEXT: store <4 x i32> zeroinitializer, ptr [[TMP20]], align 8
; CHECK-NEXT: [[INDEX_NEXT]] = add nuw i64 [[INDEX]], 4
; CHECK-NEXT: [[VEC_IND_NEXT]] = add <4 x i32> [[VEC_IND]], splat (i32 4)
; CHECK-NEXT: [[TMP22:%.*]] = icmp eq i64 [[INDEX_NEXT]], 200
; CHECK-NEXT: br i1 [[TMP22]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], !llvm.loop [[LOOP10:![0-9]+]]
; CHECK: middle.block:
; CHECK-NEXT: br label [[SCALAR_PH]]
; CHECK: scalar.ph:
; CHECK-NEXT: [[BC_RESUME_VAL:%.*]] = phi i64 [ 200, [[MIDDLE_BLOCK]] ], [ 0, [[VECTOR_SCEVCHECK]] ]
; CHECK-NEXT: [[BC_RESUME_VAL1:%.*]] = phi i32 [ 200, [[MIDDLE_BLOCK]] ], [ 0, [[VECTOR_SCEVCHECK]] ]
; CHECK-NEXT: br label [[LOOP:%.*]]
; CHECK: loop:
; CHECK-NEXT: [[IV_2:%.*]] = phi i64 [ [[BC_RESUME_VAL]], [[SCALAR_PH]] ], [ [[IV_2_NEXT:%.*]], [[LOOP]] ]
; CHECK-NEXT: [[IV_3:%.*]] = phi i32 [ [[BC_RESUME_VAL1]], [[SCALAR_PH]] ], [ [[IV_3_NEXT:%.*]], [[LOOP]] ]
; CHECK-NEXT: [[IV_MUL:%.*]] = mul i32 [[IV_3]], [[ADD]]
; CHECK-NEXT: [[GEP_MUL:%.*]] = getelementptr i8, ptr [[DST_1]], i32 [[IV_MUL]]
; CHECK-NEXT: store i32 0, ptr [[GEP_MUL]], align 8
; CHECK-NEXT: [[IV_2_MUL:%.*]] = mul i64 [[IV_2]], [[OFFSET_EXT]]
; CHECK-NEXT: [[GEP:%.*]] = getelementptr i32, ptr [[DST_2]], i64 [[IV_2_MUL]]
; CHECK-NEXT: store i32 0, ptr [[GEP]], align 8
; CHECK-NEXT: [[IV_2_NEXT]] = add i64 [[IV_2]], 1
; CHECK-NEXT: [[IV_3_NEXT]] = add i32 [[IV_3]], 1
; CHECK-NEXT: [[EC:%.*]] = icmp eq i32 [[IV_3]], 200
; CHECK-NEXT: br i1 [[EC]], label [[EXIT:%.*]], label [[LOOP]], !llvm.loop [[LOOP11:![0-9]+]]
; CHECK: exit:
; CHECK-NEXT: ret void
;
entry:
%offset.ext = zext i32 %offset to i64
%add = add i32 %offset, 3
br label %loop
loop:
%iv.2 = phi i64 [ 0, %entry ], [ %iv.2.next, %loop ]
%iv.3 = phi i32 [ 0, %entry ], [ %iv.3.next, %loop ]
%iv.mul = mul i32 %iv.3, %add
%gep.mul = getelementptr i8, ptr %dst.1, i32 %iv.mul
store i32 0, ptr %gep.mul, align 8
%iv.2.mul = mul i64 %iv.2, %offset.ext
%gep = getelementptr i32, ptr %dst.2, i64 %iv.2.mul
store i32 0, ptr %gep, align 8
%iv.2.next = add i64 %iv.2, 1
%iv.3.next = add i32 %iv.3, 1
%ec = icmp eq i32 %iv.3, 200
br i1 %ec, label %exit, label %loop
exit:
ret void
}
; Test case to make sure that uses of versioned strides of type i1 are properly
; extended. From https://github.com/llvm/llvm-project/issues/91369.
; TODO: Better check (udiv i64 15, %g.64) after checking if %g == 1.
define void @zext_of_i1_stride(i1 %g, ptr %dst) mustprogress {
; CHECK-LABEL: define void @zext_of_i1_stride(
; CHECK-SAME: i1 [[G:%.*]], ptr [[DST:%.*]]) #[[ATTR0:[0-9]+]] {
; CHECK-NEXT: entry:
; CHECK-NEXT: [[G_16:%.*]] = zext i1 [[G]] to i16
; CHECK-NEXT: [[G_64:%.*]] = zext i1 [[G]] to i64
; CHECK-NEXT: [[TMP0:%.*]] = udiv i64 15, [[G_64]]
; CHECK-NEXT: [[TMP1:%.*]] = add nuw nsw i64 [[TMP0]], 1
; CHECK-NEXT: br label [[VECTOR_SCEVCHECK:%.*]]
; CHECK: vector.scevcheck:
; CHECK-NEXT: [[IDENT_CHECK:%.*]] = icmp ne i1 [[G]], true
; CHECK-NEXT: br i1 [[IDENT_CHECK]], label [[SCALAR_PH:%.*]], label [[VECTOR_PH:%.*]]
; CHECK: vector.ph:
; CHECK-NEXT: [[N_MOD_VF:%.*]] = urem i64 [[TMP1]], 4
; CHECK-NEXT: [[N_VEC:%.*]] = sub i64 [[TMP1]], [[N_MOD_VF]]
; CHECK-NEXT: [[IND_END:%.*]] = mul i64 [[N_VEC]], [[G_64]]
; CHECK-NEXT: br label [[VECTOR_BODY:%.*]]
; CHECK: vector.body:
; CHECK-NEXT: [[INDEX:%.*]] = phi i64 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[VECTOR_BODY]] ]
; CHECK-NEXT: [[OFFSET_IDX:%.*]] = mul i64 [[INDEX]], [[G_64]]
; CHECK-NEXT: [[TMP4:%.*]] = getelementptr inbounds i16, ptr [[DST]], i64 [[OFFSET_IDX]]
; CHECK-NEXT: store <4 x i16> splat (i16 1), ptr [[TMP4]], align 2
; CHECK-NEXT: [[INDEX_NEXT]] = add nuw i64 [[INDEX]], 4
; CHECK-NEXT: [[TMP6:%.*]] = icmp eq i64 [[INDEX_NEXT]], [[N_VEC]]
; CHECK-NEXT: br i1 [[TMP6]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], !llvm.loop [[LOOP12:![0-9]+]]
; CHECK: middle.block:
; CHECK-NEXT: [[CMP_N:%.*]] = icmp eq i64 [[TMP1]], [[N_VEC]]
; CHECK-NEXT: br i1 [[CMP_N]], label [[EXIT:%.*]], label [[SCALAR_PH]]
; CHECK: scalar.ph:
; CHECK-NEXT: [[BC_RESUME_VAL:%.*]] = phi i64 [ [[IND_END]], [[MIDDLE_BLOCK]] ], [ 0, [[VECTOR_SCEVCHECK]] ]
; CHECK-NEXT: br label [[LOOP:%.*]]
; CHECK: loop:
; CHECK-NEXT: [[IV:%.*]] = phi i64 [ [[BC_RESUME_VAL]], [[SCALAR_PH]] ], [ [[IV_NEXT:%.*]], [[LOOP]] ]
; CHECK-NEXT: [[GEP:%.*]] = getelementptr inbounds i16, ptr [[DST]], i64 [[IV]]
; CHECK-NEXT: store i16 [[G_16]], ptr [[GEP]], align 2
; CHECK-NEXT: [[IV_NEXT]] = add nuw nsw i64 [[IV]], [[G_64]]
; CHECK-NEXT: [[CMP:%.*]] = icmp ult i64 [[IV_NEXT]], 16
; CHECK-NEXT: br i1 [[CMP]], label [[LOOP]], label [[EXIT]], !llvm.loop [[LOOP13:![0-9]+]]
; CHECK: exit:
; CHECK-NEXT: ret void
;
entry:
%g.16 = zext i1 %g to i16
%g.64 = zext i1 %g to i64
br label %loop
loop:
%iv = phi i64 [ 0, %entry ], [ %iv.next, %loop ]
%gep = getelementptr inbounds i16, ptr %dst, i64 %iv
store i16 %g.16, ptr %gep, align 2
%iv.next = add nuw nsw i64 %iv, %g.64
%cmp = icmp ult i64 %iv.next, 16
br i1 %cmp, label %loop, label %exit
exit:
ret void
}
; Test case to make sure that uses of versioned strides of type i1 are properly
; extended.
define void @sext_of_i1_stride(i1 %g, ptr %dst) mustprogress {
; CHECK-LABEL: define void @sext_of_i1_stride(
; CHECK-SAME: i1 [[G:%.*]], ptr [[DST:%.*]]) #[[ATTR0]] {
; CHECK-NEXT: entry:
; CHECK-NEXT: [[G_16:%.*]] = sext i1 [[G]] to i16
; CHECK-NEXT: [[G_64:%.*]] = sext i1 [[G]] to i64
; CHECK-NEXT: br label [[LOOP:%.*]]
; CHECK: loop:
; CHECK-NEXT: [[IV:%.*]] = phi i64 [ 0, [[ENTRY:%.*]] ], [ [[IV_NEXT:%.*]], [[LOOP]] ]
; CHECK-NEXT: [[GEP:%.*]] = getelementptr inbounds i16, ptr [[DST]], i64 [[IV]]
; CHECK-NEXT: store i16 [[G_16]], ptr [[GEP]], align 2
; CHECK-NEXT: [[IV_NEXT]] = add nuw nsw i64 [[IV]], [[G_64]]
; CHECK-NEXT: [[CMP:%.*]] = icmp ult i64 [[IV_NEXT]], 16
; CHECK-NEXT: br i1 [[CMP]], label [[LOOP]], label [[EXIT:%.*]]
; CHECK: exit:
; CHECK-NEXT: ret void
;
entry:
%g.16 = sext i1 %g to i16
%g.64 = sext i1 %g to i64
br label %loop
loop:
%iv = phi i64 [ 0, %entry ], [ %iv.next, %loop ]
%gep = getelementptr inbounds i16, ptr %dst, i64 %iv
store i16 %g.16, ptr %gep, align 2
%iv.next = add nuw nsw i64 %iv, %g.64
%cmp = icmp ult i64 %iv.next, 16
br i1 %cmp, label %loop, label %exit
exit:
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]], [[META1]]}
; CHECK: [[LOOP4]] = distinct !{[[LOOP4]], [[META1]], [[META2]]}
; CHECK: [[LOOP5]] = distinct !{[[LOOP5]], [[META1]]}
; CHECK: [[LOOP6]] = distinct !{[[LOOP6]], [[META1]], [[META2]]}
; CHECK: [[LOOP7]] = distinct !{[[LOOP7]], [[META1]]}
; CHECK: [[LOOP8]] = distinct !{[[LOOP8]], [[META1]], [[META2]]}
; CHECK: [[LOOP9]] = distinct !{[[LOOP9]], [[META1]]}
; CHECK: [[LOOP10]] = distinct !{[[LOOP10]], [[META1]], [[META2]]}
; CHECK: [[LOOP11]] = distinct !{[[LOOP11]], [[META1]]}
; CHECK: [[LOOP12]] = distinct !{[[LOOP12]], [[META1]], [[META2]]}
; CHECK: [[LOOP13]] = distinct !{[[LOOP13]], [[META1]]}
;.
Reference in New Issue View Git Blame Copy Permalink