http://llvm.org/bugs/show_bug.cgi?id=16258
Bug ID: 16258
Summary: fadd with undef not folded
Product: new-bugs
Version: trunk
Hardware: PC
OS: Linux
Status: NEW
Severity: normal
Priority: P
Component: new bugs
Assignee: [email protected]
Reporter: [email protected]
CC: [email protected]
Classification: Unclassified
Testcase:
define double @sm(double %x) {
%tmp = fadd double %x, undef
ret double %tmp
}
define double @fm(double %x) {
%tmp = fadd fast double %x, undef
ret double %tmp
}
Instcombine doesn't fold this, not even the fast-math version:
$ opt -instcombine math-fold.ll -S -o -
; ModuleID = 'math-fold.ll'
define double @sm(double %x) {
%tmp = fadd double %x, undef
ret double %tmp
}
define double @fm(double %x) {
%tmp = fadd fast double %x, undef
ret double %tmp
}
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