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llvm-project/llvm/test/Transforms/LoopInterchange/pr57148.ll
Ryotaro Kasuga a13e04a694
[LoopInterchange] Update UTC version (NFC) (#181988) 
This is a follow-up PR to #181804. While working on the stacked PRs, I
encountered some noisy diffs in the CHECK lines that don't change the
meaning of the tests. To avoid such changes and make the review easier,
this patch updates the UTC version. It also renames some BBs to suppress
warnings emitted by UTC.
2026-02-18 20:09:38 +09:00

280 lines
14 KiB
LLVM
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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 6
; RUN: opt < %s -passes=loop-interchange -cache-line-size=4 -loop-interchange-threshold=-100 -verify-dom-info -verify-loop-info -verify-scev -verify-loop-lcssa -S | FileCheck %s
; Make sure the loops are in LCSSA form after loop interchange,
; and loop interchange does not hit assertion errors and crash.
target triple = "x86_64-unknown-linux-gnu"
@b = external global [512 x [4 x i32]], align 1
@c = external global [2 x [4 x i32]], align 1
@d = external global [1024 x [512 x [4 x i32]]], align 1
define void @test1() {
; CHECK-LABEL: define void @test1() {
; CHECK-NEXT: [[ENTRY:.*:]]
; CHECK-NEXT: br label %[[FOR_COND37_PREHEADER_PREHEADER:.*]]
; CHECK: [[FOR_COND33_PREHEADER_PREHEADER:.*]]:
; CHECK-NEXT: br label %[[FOR_COND33_PREHEADER:.*]]
; CHECK: [[FOR_COND33_PREHEADER]]:
; CHECK-NEXT: [[I_011:%.*]] = phi i16 [ [[INC69:%.*]], %[[FOR_END67:.*]] ], [ 0, %[[FOR_COND33_PREHEADER_PREHEADER]] ]
; CHECK-NEXT: br label %[[FOR_BODY42_SPLIT1:.*]]
; CHECK: [[FOR_BODY42_PREHEADER:.*]]:
; CHECK-NEXT: br label %[[FOR_BODY42:.*]]
; CHECK: [[FOR_COND37_PREHEADER_PREHEADER]]:
; CHECK-NEXT: br label %[[FOR_COND37_PREHEADER:.*]]
; CHECK: [[FOR_COND37_PREHEADER]]:
; CHECK-NEXT: [[J_010:%.*]] = phi i16 [ [[INC66:%.*]], %[[FOR_END64:.*]] ], [ 0, %[[FOR_COND37_PREHEADER_PREHEADER]] ]
; CHECK-NEXT: br label %[[FOR_BODY42_PREHEADER]]
; CHECK: [[FOR_BODY42]]:
; CHECK-NEXT: [[K_09:%.*]] = phi i16 [ [[TMP1:%.*]], %[[FOR_BODY42_SPLIT:.*]] ], [ -512, %[[FOR_BODY42_PREHEADER]] ]
; CHECK-NEXT: br label %[[FOR_COND33_PREHEADER_PREHEADER]]
; CHECK: [[FOR_BODY42_SPLIT1]]:
; CHECK-NEXT: [[SUB51:%.*]] = add nsw i16 [[K_09]], 512
; CHECK-NEXT: [[ARRAYIDX55:%.*]] = getelementptr inbounds [512 x [4 x i32]], ptr @b, i16 0, i16 [[SUB51]], i16 [[J_010]]
; CHECK-NEXT: [[TMP0:%.*]] = load i32, ptr [[ARRAYIDX55]], align 1
; CHECK-NEXT: [[ADD61:%.*]] = add i32 undef, undef
; CHECK-NEXT: [[INC63:%.*]] = add nsw i16 [[K_09]], 1
; CHECK-NEXT: [[CMP:%.*]] = icmp slt i16 [[K_09]], 42
; CHECK-NEXT: br label %[[FOR_END67]]
; CHECK: [[FOR_BODY42_SPLIT]]:
; CHECK-NEXT: [[ADD61_LCSSA:%.*]] = phi i32 [ [[ADD61]], %[[FOR_END67]] ]
; CHECK-NEXT: [[TMP1]] = add nsw i16 [[K_09]], 1
; CHECK-NEXT: [[TMP2:%.*]] = icmp slt i16 [[K_09]], 42
; CHECK-NEXT: br i1 [[TMP2]], label %[[FOR_BODY42]], label %[[FOR_END64]]
; CHECK: [[FOR_END64]]:
; CHECK-NEXT: [[ADD61_LCSSA_LCSSA:%.*]] = phi i32 [ [[ADD61_LCSSA]], %[[FOR_BODY42_SPLIT]] ]
; CHECK-NEXT: store i32 [[ADD61_LCSSA_LCSSA]], ptr undef, align 1
; CHECK-NEXT: [[INC66]] = add nuw nsw i16 [[J_010]], 1
; CHECK-NEXT: [[CMP2:%.*]] = icmp slt i16 [[J_010]], 43
; CHECK-NEXT: br i1 [[CMP2]], label %[[FOR_COND37_PREHEADER]], label %[[FOR_COND75_PREHEADER:.*]]
; CHECK: [[FOR_END67]]:
; CHECK-NEXT: [[INC69]] = add nuw nsw i16 [[I_011]], 1
; CHECK-NEXT: [[EXITCOND13_NOT:%.*]] = icmp eq i16 [[INC69]], 2
; CHECK-NEXT: br i1 [[EXITCOND13_NOT]], label %[[FOR_BODY42_SPLIT]], label %[[FOR_COND33_PREHEADER]]
; CHECK: [[FOR_COND75_PREHEADER]]:
; CHECK-NEXT: br label %[[FOR_COND75:.*]]
; CHECK: [[FOR_COND75]]:
; CHECK-NEXT: br label %[[FOR_COND75]]
;
entry:
br label %for.cond33.preheader
for.cond33.preheader: ; preds = %for.end67, %entry
%i.011 = phi i16 [ 0, %entry ], [ %inc69, %for.end67 ]
br label %for.cond37.preheader
for.cond37.preheader: ; preds = %for.end64, %for.cond33.preheader
%j.010 = phi i16 [ 0, %for.cond33.preheader ], [ %inc66, %for.end64 ]
br label %for.body42
for.body42: ; preds = %for.body42, %for.cond37.preheader
%k.09 = phi i16 [ -512, %for.cond37.preheader ], [ %inc63, %for.body42 ]
%sub51 = add nsw i16 %k.09, 512
%arrayidx55 = getelementptr inbounds [512 x [4 x i32]], ptr @b, i16 0, i16 %sub51, i16 %j.010
%0 = load i32, ptr %arrayidx55, align 1
%add61 = add i32 undef, undef
%inc63 = add nsw i16 %k.09, 1
%cmp = icmp slt i16 %k.09, 42
br i1 %cmp, label %for.body42, label %for.end64
for.end64: ; preds = %for.body42
store i32 %add61, ptr undef, align 1
%inc66 = add nuw nsw i16 %j.010, 1
%cmp2 = icmp slt i16 %j.010, 43
br i1 %cmp2, label %for.cond37.preheader, label %for.end67
for.end67: ; preds = %for.end64
%inc69 = add nuw nsw i16 %i.011, 1
%exitcond13.not = icmp eq i16 %inc69, 2
br i1 %exitcond13.not, label %for.cond75, label %for.cond33.preheader
for.cond75: ; preds = %for.cond75, %for.end67
br label %for.cond75
}
; Make sure that we split the phi nodes in the middle loop header
; into a separate basic block to avoid the situation where use of
; the outermost indvar appears before its def after interchanging
; the outermost and the middle loop. Otherwise loop interchange
; would crash.
define void @test2() {
; CHECK-LABEL: define void @test2() {
; CHECK-NEXT: [[ENTRY:.*:]]
; CHECK-NEXT: br label %[[FOR_COND33_PREHEADER:.*]]
; CHECK: [[FOR_COND33_PREHEADER_PREHEADER:.*]]:
; CHECK-NEXT: br label %[[FOR_COND33_PREHEADER1:.*]]
; CHECK: [[FOR_COND33_PREHEADER1]]:
; CHECK-NEXT: [[I_166:%.*]] = phi i16 [ [[INC69:%.*]], %[[FOR_INC68:.*]] ], [ 0, %[[FOR_COND33_PREHEADER_PREHEADER]] ]
; CHECK-NEXT: [[ARRAYIDX60:%.*]] = getelementptr inbounds [2 x [4 x i32]], ptr @c, i16 0, i16 [[I_166]], i16 [[J_165:%.*]]
; CHECK-NEXT: br label %[[VECTOR_BODY85_SPLIT1:.*]]
; CHECK: [[FOR_COND33_PREHEADER]]:
; CHECK-NEXT: br label %[[FOR_COND37_PREHEADER:.*]]
; CHECK: [[FOR_COND37_PREHEADER]]:
; CHECK-NEXT: [[J_165]] = phi i16 [ [[INC66:%.*]], %[[MIDDLE_BLOCK80:.*]] ], [ 0, %[[FOR_COND33_PREHEADER]] ]
; CHECK-NEXT: br label %[[VECTOR_BODY85:.*]]
; CHECK: [[VECTOR_BODY85]]:
; CHECK-NEXT: br label %[[VECTOR_BODY86:.*]]
; CHECK: [[VECTOR_BODY86]]:
; CHECK-NEXT: [[INDEX86:%.*]] = phi i16 [ 0, %[[VECTOR_BODY85]] ], [ [[TMP5:%.*]], %[[VECTOR_BODY85_SPLIT:.*]] ]
; CHECK-NEXT: br label %[[FOR_COND33_PREHEADER_PREHEADER]]
; CHECK: [[VECTOR_BODY85_SPLIT1]]:
; CHECK-NEXT: [[TMP0:%.*]] = or disjoint i16 [[INDEX86]], 2
; CHECK-NEXT: [[TMP1:%.*]] = getelementptr inbounds [512 x [4 x i32]], ptr @b, i16 0, i16 [[TMP0]], i16 [[J_165]]
; CHECK-NEXT: [[TMP2:%.*]] = load i32, ptr [[TMP1]], align 1
; CHECK-NEXT: [[TMP3:%.*]] = add nuw i16 [[INDEX86]], 4
; CHECK-NEXT: [[CMP2:%.*]] = icmp slt i16 [[INDEX86]], 42
; CHECK-NEXT: br label %[[FOR_INC68]]
; CHECK: [[VECTOR_BODY85_SPLIT]]:
; CHECK-NEXT: [[TMP5]] = add nuw i16 [[INDEX86]], 4
; CHECK-NEXT: [[TMP4:%.*]] = icmp slt i16 [[INDEX86]], 42
; CHECK-NEXT: br i1 [[TMP4]], label %[[VECTOR_BODY86]], label %[[MIDDLE_BLOCK80]]
; CHECK: [[MIDDLE_BLOCK80]]:
; CHECK-NEXT: [[INC66]] = add nuw nsw i16 [[J_165]], 1
; CHECK-NEXT: [[CMP:%.*]] = icmp slt i16 [[INC66]], 42
; CHECK-NEXT: br i1 [[CMP]], label %[[FOR_COND37_PREHEADER]], label %[[FOR_COND75_PREHEADER:.*]]
; CHECK: [[FOR_INC68]]:
; CHECK-NEXT: [[INC69]] = add nuw nsw i16 [[I_166]], 1
; CHECK-NEXT: [[EXITCOND77_NOT:%.*]] = icmp slt i16 [[INC69]], 24
; CHECK-NEXT: br i1 [[EXITCOND77_NOT]], label %[[FOR_COND33_PREHEADER1]], label %[[VECTOR_BODY85_SPLIT]]
; CHECK: [[FOR_COND75_PREHEADER]]:
; CHECK-NEXT: unreachable
;
entry:
br label %for.cond33.preheader
for.cond33.preheader: ; preds = %for.inc68, %entry
%i.166 = phi i16 [ %inc69, %for.inc68 ], [ 0, %entry ]
br label %for.cond37.preheader
for.cond37.preheader: ; preds = %middle.block80, %for.cond33.preheader
%j.165 = phi i16 [ 0, %for.cond33.preheader ], [ %inc66, %middle.block80 ]
%arrayidx60 = getelementptr inbounds [2 x [4 x i32]], ptr @c, i16 0, i16 %i.166, i16 %j.165
br label %vector.body85
vector.body85: ; preds = %vector.body85, %for.cond37.preheader
%index86 = phi i16 [ 0, %for.cond37.preheader ], [ %index.next87, %vector.body85 ]
%0 = or disjoint i16 %index86, 2
%1 = getelementptr inbounds [512 x [4 x i32]], ptr @b, i16 0, i16 %0, i16 %j.165
%2 = load i32, ptr %1, align 1
%index.next87 = add nuw i16 %index86, 4
%cmp2 = icmp slt i16 %index86, 42
br i1 %cmp2, label %vector.body85, label %middle.block80
middle.block80: ; preds = %vector.body85
%inc66 = add nuw nsw i16 %j.165, 1
%cmp = icmp slt i16 %inc66, 42
br i1 %cmp, label %for.cond37.preheader, label %for.inc68
for.inc68: ; preds = %middle.block80
%inc69 = add nuw nsw i16 %i.166, 1
%exitcond77.not = icmp slt i16 %inc69, 24
br i1 %exitcond77.not, label %for.cond33.preheader, label %for.cond75.preheader
for.cond75.preheader: ; preds = %for.inc68
unreachable
}
; Same as test1, but with a third index on the GEP
define void @test3() {
; CHECK-LABEL: define void @test3() {
; CHECK-NEXT: [[ENTRY:.*:]]
; CHECK-NEXT: br label %[[FOR_COND37_PREHEADER_PREHEADER:.*]]
; CHECK: [[FOR_COND33_PREHEADER_PREHEADER:.*]]:
; CHECK-NEXT: br label %[[FOR_COND33_PREHEADER:.*]]
; CHECK: [[FOR_COND33_PREHEADER]]:
; CHECK-NEXT: [[I_011:%.*]] = phi i16 [ [[INC69:%.*]], %[[FOR_END67:.*]] ], [ 0, %[[FOR_COND33_PREHEADER_PREHEADER]] ]
; CHECK-NEXT: br label %[[FOR_BODY42_SPLIT1:.*]]
; CHECK: [[FOR_BODY42_PREHEADER:.*]]:
; CHECK-NEXT: br label %[[FOR_BODY42:.*]]
; CHECK: [[FOR_COND38_PREHEADER_PREHEADER:.*]]:
; CHECK-NEXT: br label %[[FOR_COND38_PREHEADER:.*]]
; CHECK: [[FOR_COND37_PREHEADER_PREHEADER]]:
; CHECK-NEXT: br label %[[FOR_COND37_PREHEADER:.*]]
; CHECK: [[FOR_COND37_PREHEADER]]:
; CHECK-NEXT: [[J_010:%.*]] = phi i16 [ [[INC66:%.*]], %[[FOR_END64:.*]] ], [ 0, %[[FOR_COND37_PREHEADER_PREHEADER]] ]
; CHECK-NEXT: br label %[[FOR_COND38_PREHEADER_PREHEADER]]
; CHECK: [[FOR_COND38_PREHEADER]]:
; CHECK-NEXT: [[K_010:%.*]] = phi i16 [ [[INC67:%.*]], %[[FOR_END65:.*]] ], [ 0, %[[FOR_COND38_PREHEADER_PREHEADER]] ]
; CHECK-NEXT: br label %[[FOR_BODY42_PREHEADER]]
; CHECK: [[FOR_BODY42]]:
; CHECK-NEXT: [[K_09:%.*]] = phi i16 [ [[TMP3:%.*]], %[[FOR_BODY42_SPLIT:.*]] ], [ -512, %[[FOR_BODY42_PREHEADER]] ]
; CHECK-NEXT: br label %[[FOR_COND33_PREHEADER_PREHEADER]]
; CHECK: [[FOR_BODY42_SPLIT1]]:
; CHECK-NEXT: [[SUB51:%.*]] = add nsw i16 [[K_09]], 512
; CHECK-NEXT: [[ARRAYIDX55:%.*]] = getelementptr inbounds [1024 x [512 x [4 x i32]]], ptr @d, i16 0, i16 [[SUB51]], i16 [[J_010]], i16 [[K_010]]
; CHECK-NEXT: [[TMP0:%.*]] = load i32, ptr [[ARRAYIDX55]], align 1
; CHECK-NEXT: [[ADD61:%.*]] = add i32 undef, undef
; CHECK-NEXT: [[TMP1:%.*]] = add nsw i16 [[K_09]], 1
; CHECK-NEXT: [[CMP:%.*]] = icmp slt i16 [[K_09]], 42
; CHECK-NEXT: br label %[[FOR_END67]]
; CHECK: [[FOR_BODY42_SPLIT]]:
; CHECK-NEXT: [[ADD61_LCSSA:%.*]] = phi i32 [ [[ADD61]], %[[FOR_END67]] ]
; CHECK-NEXT: [[TMP3]] = add nsw i16 [[K_09]], 1
; CHECK-NEXT: [[TMP2:%.*]] = icmp slt i16 [[K_09]], 42
; CHECK-NEXT: br i1 [[TMP2]], label %[[FOR_BODY42]], label %[[FOR_END65]]
; CHECK: [[FOR_END65]]:
; CHECK-NEXT: [[ADD61_LCSSA_LCSSA:%.*]] = phi i32 [ [[ADD61_LCSSA]], %[[FOR_BODY42_SPLIT]] ]
; CHECK-NEXT: store i32 [[ADD61_LCSSA_LCSSA]], ptr undef, align 1
; CHECK-NEXT: [[INC67]] = add nuw nsw i16 [[K_010]], 1
; CHECK-NEXT: [[CMP3:%.*]] = icmp slt i16 [[K_010]], 44
; CHECK-NEXT: br i1 [[CMP3]], label %[[FOR_COND38_PREHEADER]], label %[[FOR_END64]]
; CHECK: [[FOR_END64]]:
; CHECK-NEXT: [[INC66]] = add nuw nsw i16 [[J_010]], 1
; CHECK-NEXT: [[CMP2:%.*]] = icmp slt i16 [[J_010]], 43
; CHECK-NEXT: br i1 [[CMP2]], label %[[FOR_COND37_PREHEADER]], label %[[FOR_COND75_PREHEADER:.*]]
; CHECK: [[FOR_END67]]:
; CHECK-NEXT: [[INC69]] = add nuw nsw i16 [[I_011]], 1
; CHECK-NEXT: [[EXITCOND13_NOT:%.*]] = icmp eq i16 [[INC69]], 2
; CHECK-NEXT: br i1 [[EXITCOND13_NOT]], label %[[FOR_BODY42_SPLIT]], label %[[FOR_COND33_PREHEADER]]
; CHECK: [[FOR_COND75_PREHEADER]]:
; CHECK-NEXT: br label %[[FOR_COND75:.*]]
; CHECK: [[FOR_COND75]]:
; CHECK-NEXT: br label %[[FOR_COND75]]
;
entry:
br label %for.cond33.preheader
for.cond33.preheader: ; preds = %for.end67, %entry
%i.011 = phi i16 [ 0, %entry ], [ %inc69, %for.end67 ]
br label %for.cond37.preheader
for.cond37.preheader: ; preds = %for.end64, %for.cond33.preheader
%j.010 = phi i16 [ 0, %for.cond33.preheader ], [ %inc66, %for.end64 ]
br label %for.cond38.preheader
for.cond38.preheader: ; preds = %for.end65, %for.cond37.preheader
%k.010 = phi i16 [ 0, %for.cond37.preheader ], [ %inc67, %for.end65 ]
br label %for.body42
for.body42: ; preds = %for.body42, %for.cond38.preheader
%k.09 = phi i16 [ -512, %for.cond38.preheader ], [ %inc63, %for.body42 ]
%sub51 = add nsw i16 %k.09, 512
%arrayidx55 = getelementptr inbounds [1024 x [512 x [4 x i32]]], ptr @d, i16 0, i16 %sub51, i16 %j.010, i16 %k.010
%0 = load i32, ptr %arrayidx55, align 1
%add61 = add i32 undef, undef
%inc63 = add nsw i16 %k.09, 1
%cmp = icmp slt i16 %k.09, 42
br i1 %cmp, label %for.body42, label %for.end65
for.end65: ; preds = %for.body42
store i32 %add61, ptr undef, align 1
%inc67 = add nuw nsw i16 %k.010, 1
%cmp3 = icmp slt i16 %k.010, 44
br i1 %cmp3, label %for.cond38.preheader, label %for.end64
for.end64: ; preds = %for.end65
%inc66 = add nuw nsw i16 %j.010, 1
%cmp2 = icmp slt i16 %j.010, 43
br i1 %cmp2, label %for.cond37.preheader, label %for.end67
for.end67: ; preds = %for.end64
%inc69 = add nuw nsw i16 %i.011, 1
%exitcond13.not = icmp eq i16 %inc69, 2
br i1 %exitcond13.not, label %for.cond75, label %for.cond33.preheader
for.cond75: ; preds = %for.cond75, %for.end67
br label %for.cond75
}
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