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[ArgPromotion] Add a testcase for PR32917 

Differential Revision: https://reviews.llvm.org/D32882

llvm-svn: 302216
This commit is contained in:
Martin Storsjo 2017-05-05 08:40:24 +00:00
parent 51904ae35a
commit 2b0fae877e
1 changed files with 23 additions and 0 deletions
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23
llvm/test/Transforms/ArgumentPromotion/pr32917.ll Normal file
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; RUN: opt < %s -argpromotion -S | FileCheck %s
; PR 32917
@b = common local_unnamed_addr global i32 0, align 4
@a = common local_unnamed_addr global i32 0, align 4
define i32 @fn2() local_unnamed_addr {
%1 = load i32, i32* @b, align 4
%2 = sext i32 %1 to i64
%3 = inttoptr i64 %2 to i32*
call fastcc void @fn1(i32* %3)
ret i32 undef
}
define internal fastcc void @fn1(i32* nocapture readonly) unnamed_addr {
%2 = getelementptr inbounds i32, i32* %0, i64 -1
%3 = load i32, i32* %2, align 4
store i32 %3, i32* @a, align 4
ret void
}
; CHECK: getelementptr {{.*}} -1
; CHECK-NOT: getelementptr {{.*}} 4294967295