mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-07-21 18:29:45 +00:00
21dc20cbd6
handle NaN properly. Do (X une Y) ? X : Y -> X if one of X and Y is not zero. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96955 91177308-0d34-0410-b5e6-96231b3b80d8
54 lines
1.3 KiB
LLVM
54 lines
1.3 KiB
LLVM
; RUN: opt < %s -instcombine -S | FileCheck %s
|
|
|
|
; x != y ? x : y -> x if it's the right kind of != and at least
|
|
; one of x and y is not negative zero.
|
|
|
|
; CHECK: f0
|
|
; CHECK: ret double %x
|
|
define double @f0(double %x) nounwind readnone {
|
|
entry:
|
|
%cmp = fcmp une double %x, -1.0
|
|
%cond = select i1 %cmp, double %x, double -1.0
|
|
ret double %cond
|
|
}
|
|
; CHECK: f1
|
|
; CHECK: ret double -1.000000e+00
|
|
define double @f1(double %x) nounwind readnone {
|
|
entry:
|
|
%cmp = fcmp une double %x, -1.0
|
|
%cond = select i1 %cmp, double -1.0, double %x
|
|
ret double %cond
|
|
}
|
|
; CHECK: f2
|
|
; CHECK: ret double %cond
|
|
define double @f2(double %x, double %y) nounwind readnone {
|
|
entry:
|
|
%cmp = fcmp une double %x, %y
|
|
%cond = select i1 %cmp, double %x, double %y
|
|
ret double %cond
|
|
}
|
|
; CHECK: f3
|
|
; CHECK: ret double %cond
|
|
define double @f3(double %x, double %y) nounwind readnone {
|
|
entry:
|
|
%cmp = fcmp une double %x, %y
|
|
%cond = select i1 %cmp, double %y, double %x
|
|
ret double %cond
|
|
}
|
|
; CHECK: f4
|
|
; CHECK: ret double %cond
|
|
define double @f4(double %x) nounwind readnone {
|
|
entry:
|
|
%cmp = fcmp one double %x, -1.0
|
|
%cond = select i1 %cmp, double %x, double -1.0
|
|
ret double %cond
|
|
}
|
|
; CHECK: f5
|
|
; CHECK: ret double %cond
|
|
define double @f5(double %x) nounwind readnone {
|
|
entry:
|
|
%cmp = fcmp one double %x, -1.0
|
|
%cond = select i1 %cmp, double -1.0, double %x
|
|
ret double %cond
|
|
}
|