Mercurial > hg > CbC > CbC_llvm
comparison test/CodeGen/X86/vbinop-simplify-bug.ll @ 77:54457678186b LLVM3.6
LLVM 3.6
author | Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> |
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date | Mon, 08 Sep 2014 22:06:00 +0900 |
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34:e874dbf0ad9d | 77:54457678186b |
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1 ; RUN: llc < %s -mtriple=x86_64-unknown-linux-gnu -mattr=sse2 -mcpu=corei7 -o /dev/null | |
2 | |
3 ; Revision 199135 introduced a wrong check in method | |
4 ; DAGCombiner::SimplifyVBinOp in an attempt to refactor some code | |
5 ; using the new method 'BuildVectorSDNode::isConstant' when possible. | |
6 ; | |
7 ; However the modified code in method SimplifyVBinOp now wrongly | |
8 ; checks that the operands of a vector bin-op are both constants. | |
9 ; | |
10 ; With that wrong change, this test started failing because of a | |
11 ; 'fatal error in the backend': | |
12 ; Cannot select: 0x2e329d0: v4i32 = BUILD_VECTOR 0x2e2ea00, 0x2e2ea00, 0x2e2ea00, 0x2e2ea00 | |
13 ; 0x2e2ea00: i32 = Constant<1> [ID=4] | |
14 ; 0x2e2ea00: i32 = Constant<1> [ID=4] | |
15 ; 0x2e2ea00: i32 = Constant<1> [ID=4] | |
16 ; 0x2e2ea00: i32 = Constant<1> [ID=4] | |
17 | |
18 define <8 x i32> @reduced_test_case() { | |
19 %Shuff = shufflevector <8 x i32> zeroinitializer, <8 x i32> zeroinitializer, <8 x i32> <i32 1, i32 3, i32 undef, i32 7, i32 9, i32 11, i32 13, i32 15> | |
20 %B23 = sub <8 x i32> %Shuff, <i32 -1, i32 -1, i32 -1, i32 -1, i32 -1, i32 -1, i32 -1, i32 -1> | |
21 ret <8 x i32> %B23 | |
22 } | |
23 |