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https://github.com/c64scene-ar/llvm-6502.git
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Hans Wennborg
aa43f964b2
------------------------------------------------------------------------ r229352 | majnemer | 2015-02-15 20:02:09 -0800 (Sun, 15 Feb 2015) | 8 lines IR: Properly return nullptr when getAggregateElement is out-of-bounds We didn't properly handle the out-of-bounds case for ConstantAggregateZero and UndefValue. This would manifest as a crash when the constant folder was asked to fold a load of a constant global whose struct type has no operands. This fixes PR22595. ------------------------------------------------------------------------ git-svn-id: https://llvm.org/svn/llvm-project/llvm/branches/release_36@229588 91177308-0d34-0410-b5e6-96231b3b80d8
20 lines
428 B
LLVM
20 lines
428 B
LLVM
; RUN: opt < %s -instsimplify -S | FileCheck %s
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@zeroinit = constant {} zeroinitializer
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@undef = constant {} undef
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define i32 @crash_on_zeroinit() {
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; CHECK-LABEL: @crash_on_zeroinit
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; CHECK: ret i32 0
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%load = load i32* bitcast ({}* @zeroinit to i32*)
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ret i32 %load
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}
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define i32 @crash_on_undef() {
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; CHECK-LABEL: @crash_on_undef
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; CHECK: ret i32 undef
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%load = load i32* bitcast ({}* @undef to i32*)
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ret i32 %load
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}
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