forked from OSchip/llvm-project
NewGVN: Add forgotten testcase for PR 31483
llvm-svn: 290829
This commit is contained in:
Daniel Berlin
parent
de43ef9601
commit
43a5f998df
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@ -0,0 +1,106 @@
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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt < %s -basicaa -newgvn -S | FileCheck %s
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target datalayout = "E-m:e-i64:64-n32:64"
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@global = external hidden unnamed_addr constant [11 x i8], align 1
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;; Ensure we do not believe the indexing increments are unreachable due to incorrect memory
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;; equivalence detection. In PR31483, we were deleting those blocks as unreachable
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; Function Attrs: nounwind
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define signext i32 @ham(i8* %arg, i8* %arg1) #0 {
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; CHECK-LABEL: @ham(
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; CHECK-NEXT: bb:
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; CHECK-NEXT: [[TMP:%.*]] = alloca i8*, align 8
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; CHECK-NEXT: store i8* %arg1, i8** [[TMP]], align 8
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; CHECK-NEXT: br label %bb2
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; CHECK: bb2:
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; CHECK-NEXT: [[TMP3:%.*]] = phi i8* [ %arg, %bb ], [ %tmp7, %bb22 ]
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; CHECK-NEXT: [[TMP4:%.*]] = load i8, i8* [[TMP3]], align 1
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; CHECK-NEXT: [[TMP5:%.*]] = icmp ne i8 [[TMP4]], 0
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; CHECK-NEXT: br i1 [[TMP5]], label %bb6, label %bb23
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; CHECK: bb6:
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; CHECK-NEXT: [[TMP7:%.*]] = getelementptr inbounds i8, i8* [[TMP3]], i32 1
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; CHECK-NEXT: [[TMP9:%.*]] = zext i8 [[TMP4]] to i32
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; CHECK-NEXT: switch i32 [[TMP9]], label %bb22 [
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; CHECK-NEXT: i32 115, label %bb10
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; CHECK-NEXT: i32 105, label %bb16
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; CHECK-NEXT: i32 99, label %bb16
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; CHECK-NEXT: ]
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; CHECK: bb10:
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; CHECK-NEXT: [[TMP11:%.*]] = load i8*, i8** [[TMP]], align 8
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; CHECK-NEXT: [[TMP12:%.*]] = getelementptr inbounds i8, i8* [[TMP11]], i64 8
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; CHECK-NEXT: store i8* [[TMP12]], i8** [[TMP]], align 8
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; CHECK-NEXT: [[TMP13:%.*]] = bitcast i8* [[TMP11]] to i8**
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; CHECK-NEXT: [[TMP14:%.*]] = load i8*, i8** [[TMP13]], align 8
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; CHECK-NEXT: [[TMP15:%.*]] = call signext i32 (i8*, ...) @zot(i8* getelementptr inbounds ([11 x i8], [11 x i8]* @global, i32 0, i32 0), i8* [[TMP14]])
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; CHECK-NEXT: br label %bb22
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; CHECK: bb16:
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; CHECK-NEXT: [[TMP17:%.*]] = load i8*, i8** [[TMP]], align 8
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; CHECK-NEXT: [[TMP18:%.*]] = getelementptr inbounds i8, i8* [[TMP17]], i64 8
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; CHECK-NEXT: store i8* [[TMP18]], i8** [[TMP]], align 8
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; CHECK-NEXT: [[TMP19:%.*]] = getelementptr inbounds i8, i8* [[TMP17]], i64 4
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; CHECK-NEXT: [[TMP20:%.*]] = bitcast i8* [[TMP19]] to i32*
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; CHECK-NEXT: br label %bb22
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; CHECK: bb22:
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; CHECK-NEXT: br label %bb2
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; CHECK: bb23:
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; CHECK-NEXT: [[TMP24:%.*]] = bitcast i8** [[TMP]] to i8*
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; CHECK-NEXT: call void @llvm.va_end(i8* [[TMP24]])
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; CHECK-NEXT: ret i32 undef
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;
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bb:
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%tmp = alloca i8*, align 8
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store i8* %arg1, i8** %tmp, align 8
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br label %bb2
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bb2: ; preds = %bb22, %bb
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%tmp3 = phi i8* [ %arg, %bb ], [ %tmp7, %bb22 ]
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%tmp4 = load i8, i8* %tmp3, align 1
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%tmp5 = icmp ne i8 %tmp4, 0
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br i1 %tmp5, label %bb6, label %bb23
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bb6: ; preds = %bb2
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%tmp7 = getelementptr inbounds i8, i8* %tmp3, i32 1
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%tmp8 = load i8, i8* %tmp3, align 1
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%tmp9 = zext i8 %tmp8 to i32
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switch i32 %tmp9, label %bb22 [
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i32 115, label %bb10
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i32 105, label %bb16
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i32 99, label %bb16
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]
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bb10: ; preds = %bb6
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%tmp11 = load i8*, i8** %tmp, align 8
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%tmp12 = getelementptr inbounds i8, i8* %tmp11, i64 8
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store i8* %tmp12, i8** %tmp, align 8
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%tmp13 = bitcast i8* %tmp11 to i8**
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%tmp14 = load i8*, i8** %tmp13, align 8
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%tmp15 = call signext i32 (i8*, ...) @zot(i8* getelementptr inbounds ([11 x i8], [11 x i8]* @global, i32 0, i32 0), i8* %tmp14)
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br label %bb22
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bb16: ; preds = %bb6, %bb6
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%tmp17 = load i8*, i8** %tmp, align 8
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%tmp18 = getelementptr inbounds i8, i8* %tmp17, i64 8
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store i8* %tmp18, i8** %tmp, align 8
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%tmp19 = getelementptr inbounds i8, i8* %tmp17, i64 4
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%tmp20 = bitcast i8* %tmp19 to i32*
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%tmp21 = load i32, i32* %tmp20, align 4
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br label %bb22
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bb22: ; preds = %bb16, %bb10, %bb6
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br label %bb2
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bb23: ; preds = %bb2
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%tmp24 = bitcast i8** %tmp to i8*
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call void @llvm.va_end(i8* %tmp24)
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ret i32 undef
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}
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declare signext i32 @zot(i8*, ...) #1
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; Function Attrs: nounwind
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declare void @llvm.va_end(i8*) #2
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attributes #0 = { nounwind "disable-tail-calls"="false" "less-precise-fpmad"="false" "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="ppc64" "target-features"="+altivec,-bpermd,-crypto,-direct-move,-extdiv,-power8-vector,-qpx,-vsx" "unsafe-fp-math"="false" "use-soft-float"="false" }
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attributes #1 = { "disable-tail-calls"="false" "less-precise-fpmad"="false" "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="ppc64" "target-features"="+altivec,-bpermd,-crypto,-direct-move,-extdiv,-power8-vector,-qpx,-vsx" "unsafe-fp-math"="false" "use-soft-float"="false" }
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attributes #2 = { nounwind }
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