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Constant fold SIGN_EXTEND_INREG with ashr not lshr.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47992 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Evan Cheng
2008-03-06 08:20:51 +00:00
parent 819a66cf25
commit 433f6f62ca
2 changed files with 15 additions and 1 deletions
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14
test/CodeGen/ARM/2008-03-05-SxtInRegBug.ll Normal file
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; RUN: llvm-as < %s | llc -march=arm -mattr=+v6 | not grep 255
define i32 @main(i32 %argc, i8** %argv) {
entry:
br label %bb1
bb1: ; preds = %entry
%tmp3.i.i = load i8* null, align 1 ; <i8> [#uses=1]
%tmp4.i.i = icmp slt i8 %tmp3.i.i, 0 ; <i1> [#uses=1]
br i1 %tmp4.i.i, label %bb2, label %bb3
bb2: ; preds = %bb1
ret i32 1
bb3: ; preds = %bb1
ret i32 0
}