f19876c536
For some inputs, the constraint system can grow quite large during solving, because it replaces complex constraints with one or more simpler constraints. This adds a cut-off to avoid compile-time explosion on problematic inputs.
87 lines
3.0 KiB
LLVM
87 lines
3.0 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt -constraint-elimination -S %s | FileCheck %s
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; The system for the function below grows quite large. Check to make sure
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; we can handle that scenario.
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define void @test(i64 %x, i8* %y, i8* %z, i8* %w) {
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; CHECK-LABEL: @test(
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; CHECK-NEXT: [[TMP22:%.*]] = getelementptr inbounds i8, i8* [[Y:%.*]], i64 [[X:%.*]]
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; CHECK-NEXT: [[TMP26:%.*]] = icmp ult i8* [[TMP22]], [[Z:%.*]]
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; CHECK-NEXT: br i1 [[TMP26]], label [[BB28:%.*]], label [[EARLY_EXIT:%.*]]
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; CHECK: early.exit:
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; CHECK-NEXT: unreachable
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; CHECK: bb28:
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; CHECK-NEXT: [[TMP29:%.*]] = getelementptr inbounds i8, i8* [[Y]], i64 [[X]]
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; CHECK-NEXT: [[TMP30:%.*]] = icmp ult i8* [[TMP29]], [[Z]]
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; CHECK-NEXT: br i1 true, label [[EARLY_EXIT]], label [[BB32:%.*]]
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; CHECK: bb32:
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; CHECK-NEXT: [[TMP33:%.*]] = icmp ult i8* [[TMP29]], [[Z]]
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; CHECK-NEXT: br i1 true, label [[BB35:%.*]], label [[EARLY_EXIT]]
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; CHECK: bb35:
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; CHECK-NEXT: [[TMP36:%.*]] = icmp ult i8* [[Y]], [[Z]]
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; CHECK-NEXT: br i1 true, label [[EARLY_EXIT]], label [[BB38:%.*]]
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; CHECK: bb38:
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; CHECK-NEXT: [[TMP41:%.*]] = icmp ult i8* [[Y]], [[Z]]
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; CHECK-NEXT: br i1 true, label [[EARLY_EXIT]], label [[BB43:%.*]]
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; CHECK: bb43:
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; CHECK-NEXT: [[TMP47:%.*]] = getelementptr inbounds i8, i8* [[W:%.*]], i64 [[X]]
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; CHECK-NEXT: [[TMP48:%.*]] = icmp ult i8* [[TMP47]], [[Y]]
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; CHECK-NEXT: br i1 [[TMP48]], label [[EARLY_EXIT]], label [[BB50:%.*]]
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; CHECK: bb50:
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; CHECK-NEXT: [[TMP52:%.*]] = getelementptr inbounds i8, i8* [[W]], i64 [[X]]
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; CHECK-NEXT: [[TMP53:%.*]] = icmp ult i8* [[TMP52]], [[Y]]
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; CHECK-NEXT: br i1 true, label [[EARLY_EXIT]], label [[BB55:%.*]]
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; CHECK: bb55:
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; CHECK-NEXT: [[TMP57:%.*]] = icmp ult i8* [[W]], [[Y]]
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; CHECK-NEXT: br i1 true, label [[BB59:%.*]], label [[EARLY_EXIT]]
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; CHECK: bb59:
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; CHECK-NEXT: [[TMP60:%.*]] = icmp ult i8* [[W]], [[Y]]
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; CHECK-NEXT: call void @use(i1 true)
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; CHECK-NEXT: ret void
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;
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%tmp22 = getelementptr inbounds i8, i8* %y, i64 %x
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%tmp26 = icmp ult i8* %tmp22, %z
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br i1 %tmp26, label %bb28, label %early.exit
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early.exit:
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unreachable
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bb28:
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%tmp29 = getelementptr inbounds i8, i8* %y, i64 %x
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%tmp30 = icmp ult i8* %tmp29, %z
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br i1 %tmp30, label %early.exit, label %bb32
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bb32:
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%tmp33 = icmp ult i8* %tmp29, %z
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br i1 %tmp33, label %bb35, label %early.exit
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bb35:
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%tmp36 = icmp ult i8* %y, %z
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br i1 %tmp36, label %early.exit, label %bb38
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bb38:
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%tmp41 = icmp ult i8* %y, %z
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br i1 %tmp41, label %early.exit, label %bb43
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bb43:
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%tmp47 = getelementptr inbounds i8, i8* %w, i64 %x
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%tmp48 = icmp ult i8* %tmp47, %y
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br i1 %tmp48, label %early.exit, label %bb50
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bb50:
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%tmp52 = getelementptr inbounds i8, i8* %w, i64 %x
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%tmp53 = icmp ult i8* %tmp52, %y
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br i1 %tmp53, label %early.exit, label %bb55
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bb55:
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%tmp57 = icmp ult i8* %w, %y
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br i1 %tmp57, label %bb59, label %early.exit
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bb59:
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%tmp60 = icmp ult i8* %w, %y
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call void @use(i1 %tmp60)
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ret void
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}
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declare void @use(i1)
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