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llvm-6502/test/Transforms/InstCombine/shufflevec-constant.ll
Dan Gohman 01b97dd01e Make ConstantFoldConstantExpression recursively visit the entire
ConstantExpr, not just the top-level operator. This allows it to
fold many more constants.

Also, make GlobalOpt call ConstantFoldConstantExpression on
GlobalVariable initializers.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89659 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-23 16:22:21 +00:00

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969 B
LLVM

; RUN: opt < %s -instcombine -S | grep {ret <4 x float> <float 0.000000e+00, float 0.000000e+00, float 0x7FF0000000000000, float 0x7FF0000000000000>}
target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f80:128:128"
target triple = "i386-apple-darwin9"
define <4 x float> @__inff4() nounwind readnone {
entry:
%tmp14 = extractelement <1 x double> bitcast (<2 x float> <float 0x7FF0000000000000, float 0x7FF0000000000000> to <1 x double>), i32 0 ; <double> [#uses=1]
%tmp4 = bitcast double %tmp14 to i64 ; <i64> [#uses=1]
%tmp3 = bitcast i64 %tmp4 to <2 x float> ; <<2 x float>> [#uses=1]
%tmp8 = shufflevector <2 x float> %tmp3, <2 x float> undef, <4 x i32> <i32 0, i32 1, i32 undef, i32 undef> ; <<4 x float>> [#uses=1]
%tmp9 = shufflevector <4 x float> zeroinitializer, <4 x float> %tmp8, <4 x i32> <i32 0, i32 1, i32 4, i32 5> ; <<4 x float>> [#uses=0]
ret <4 x float> %tmp9
}