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[GlobalOpt] Fix the assert for null check of global value
This is to fix the reported assert - https://bugs.llvm.org/show_bug.cgi?id=51608. Reviewed By: asbirlea Differential Revision: https://reviews.llvm.org/D108674
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Original file line number | Diff line number | Diff line change |
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@@ -0,0 +1,32 @@ | ||
; RUN: opt -globalopt -S < %s | FileCheck %s | ||
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%sometype = type { i8* } | ||
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@map = internal unnamed_addr global %sometype* null, align 8 | ||
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define void @Init() { | ||
; CHECK-LABEL: @Init( | ||
; CHECK-NEXT: entry: | ||
; CHECK-NEXT: store i1 true, i1* @map.init, align 1 | ||
; CHECK-NEXT: ret void | ||
; | ||
entry: | ||
%call = tail call noalias nonnull dereferenceable(48) i8* @_Znwm(i64 48) | ||
store i8* %call, i8** bitcast (%sometype** @map to i8**), align 8 | ||
ret void | ||
} | ||
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define void @Usage() { | ||
; CHECK-LABEL: @Usage( | ||
; CHECK-NEXT: entry: | ||
; CHECK-NEXT: [[MAP_INIT_VAL:%.*]] = load i1, i1* @map.init, align 1 | ||
; CHECK-NEXT: [[NOTINIT:%.*]] = xor i1 [[MAP_INIT_VAL]], true | ||
; CHECK-NEXT: unreachable | ||
; | ||
entry: | ||
%0 = load i8*, i8** bitcast (%sometype** @map to i8**), align 8 | ||
%.not = icmp eq i8* %0, null | ||
unreachable | ||
} | ||
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declare i8* @_Znwm(i64) |