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fbdab24d99
Treat loads which clip before the start of a global initializer the same way we treat clipping beyond the end of the initializer: use zeros. llvm-svn: 275345
31 lines
934 B
LLVM
31 lines
934 B
LLVM
; NOTE: Assertions have been autogenerated by update_test_checks.py
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; 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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;
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%load = load i32, 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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;
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%load = load i32, i32* bitcast ({}* @undef to i32*)
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ret i32 %load
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}
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@GV = private constant [8 x i32] [i32 42, i32 43, i32 44, i32 45, i32 46, i32 47, i32 48, i32 49]
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define <8 x i32> @partial_load() {
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; CHECK-LABEL: @partial_load(
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; CHECK: ret <8 x i32> <i32 0, i32 42, i32 43, i32 44, i32 45, i32 46, i32 47, i32 48>
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%load = load <8 x i32>, <8 x i32>* bitcast (i32* getelementptr ([8 x i32], [8 x i32]* @GV, i64 0, i64 -1) to <8 x i32>*)
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ret <8 x i32> %load
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}
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