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1a3257bbf5
accessed at least once as a vector. This prevents it from
compiling the example in not-a-vector into:
define double @test(double %A, double %B) {
%tmp4 = insertelement <7 x double> undef, double %A, i32 0
%tmp = insertelement <7 x double> %tmp4, double %B, i32 4
%tmp2 = extractelement <7 x double> %tmp, i32 4
ret double %tmp2
}
instead, producing the integer code. Producing vectors when they
aren't otherwise in the program is dangerous because a lot of other
code treats them carefully and doesn't want to break them down.
OTOH, many things want to break down tasty i448's.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63638 91177308-0d34-0410-b5e6-96231b3b80d8
20 lines
558 B
LLVM
20 lines
558 B
LLVM
; RUN: llvm-as < %s | opt -scalarrepl | llvm-dis | not grep alloca
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; RUN: llvm-as < %s | opt -scalarrepl | llvm-dis | not grep {7 x double}
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; RUN: llvm-as < %s | opt -scalarrepl -instcombine | llvm-dis | grep {ret double %B}
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define double @test(double %A, double %B) {
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%ARR = alloca [7 x i64]
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%C = bitcast [7 x i64]* %ARR to double*
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store double %A, double* %C
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%D = getelementptr [7 x i64]* %ARR, i32 0, i32 4
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%E = bitcast i64* %D to double*
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store double %B, double* %E
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%F = getelementptr double* %C, i32 4
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%G = load double* %F
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ret double %G
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}
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