Imported Upstream version 5.18.0.167

Former-commit-id: 289509151e0fee68a1b591a20c9f109c3c789d3a

external/llvm/test/Analysis/ValueTracking/known-nonnull-at.ll

@@ -1,100 +0,0 @@
-; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
-; RUN: opt -S -instsimplify < %s | FileCheck %s
-
-declare void @bar(i8* %a, i8* nonnull %b)
-
-; 'y' must be nonnull.
-
-define i1 @caller1(i8* %x, i8* %y) {
-; CHECK-LABEL: @caller1(
-; CHECK-NEXT:    call void @bar(i8* %x, i8* %y)
-; CHECK-NEXT:    ret i1 false
-;
-  call void @bar(i8* %x, i8* %y)
-  %null_check = icmp eq i8* %y, null
-  ret i1 %null_check
-}
-
-; Don't know anything about 'y'.
-
-define i1 @caller2(i8* %x, i8* %y) {
-; CHECK-LABEL: @caller2(
-; CHECK-NEXT:    call void @bar(i8* %y, i8* %x)
-; CHECK-NEXT:    [[NULL_CHECK:%.*]] = icmp eq i8* %y, null
-; CHECK-NEXT:    ret i1 [[NULL_CHECK]]
-;
-  call void @bar(i8* %y, i8* %x)
-  %null_check = icmp eq i8* %y, null
-  ret i1 %null_check
-}
-
-; 'y' must be nonnull.
-
-define i1 @caller3(i8* %x, i8* %y) {
-; CHECK-LABEL: @caller3(
-; CHECK-NEXT:    call void @bar(i8* %x, i8* %y)
-; CHECK-NEXT:    ret i1 true
-;
-  call void @bar(i8* %x, i8* %y)
-  %null_check = icmp ne i8* %y, null
-  ret i1 %null_check
-}
-
-; FIXME: The call is guaranteed to execute, so 'y' must be nonnull throughout.
-
-define i1 @caller4(i8* %x, i8* %y) {
-; CHECK-LABEL: @caller4(
-; CHECK-NEXT:    [[NULL_CHECK:%.*]] = icmp ne i8* %y, null
-; CHECK-NEXT:    call void @bar(i8* %x, i8* %y)
-; CHECK-NEXT:    ret i1 [[NULL_CHECK]]
-;
-  %null_check = icmp ne i8* %y, null
-  call void @bar(i8* %x, i8* %y)
-  ret i1 %null_check
-}
-
-; The call to bar() does not dominate the null check, so no change.
-
-define i1 @caller5(i8* %x, i8* %y) {
-; CHECK-LABEL: @caller5(
-; CHECK-NEXT:    [[NULL_CHECK:%.*]] = icmp eq i8* %y, null
-; CHECK-NEXT:    br i1 [[NULL_CHECK]], label %t, label %f
-; CHECK:       t:
-; CHECK-NEXT:    ret i1 [[NULL_CHECK]]
-; CHECK:       f:
-; CHECK-NEXT:    call void @bar(i8* %x, i8* %y)
-; CHECK-NEXT:    ret i1 [[NULL_CHECK]]
-;
-  %null_check = icmp eq i8* %y, null
-  br i1 %null_check, label %t, label %f
-t:
-  ret i1 %null_check
-f:
-  call void @bar(i8* %x, i8* %y)
-  ret i1 %null_check
-}
-
-; Make sure that an invoke works similarly to a call.
-
-declare i32 @esfp(...)
-
-define i1 @caller6(i8* %x, i8* %y) personality i8* bitcast (i32 (...)* @esfp to i8*){
-; CHECK-LABEL: @caller6(
-; CHECK-NEXT:    invoke void @bar(i8* %x, i8* nonnull %y)
-; CHECK-NEXT:    to label %cont unwind label %exc
-; CHECK:       cont:
-; CHECK-NEXT:    ret i1 false
-;
-  invoke void @bar(i8* %x, i8* nonnull %y)
-    to label %cont unwind label %exc
-
-cont:
-  %null_check = icmp eq i8* %y, null
-  ret i1 %null_check
-
-exc:
-  %lp = landingpad { i8*, i32 }
-    filter [0 x i8*] zeroinitializer
-  unreachable
-}
-