http://llvm.org/bugs/show_bug.cgi?id=3623
Summary: duplicate "extractvalue" not eliminated
Product: libraries
Version: trunk
Platform: PC
OS/Version: Linux
Status: NEW
Severity: normal
Priority: P2
Component: Scalar Optimizations
AssignedTo: [email protected]
ReportedBy: [email protected]
CC: [email protected]
In this .ll file:
define double @zsqr({ double, double } %a) {
%X = extractvalue { double, double } %a, 0
%Y = extractvalue { double, double } %a, 0
%Z = mul double %X, %Y
ret double %Z
}
no optimization pass in -std-compile-opts folds %X and %Y.
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