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| ; RUN: opt < %s -analyze -branch-prob | FileCheck %s
; This function tests the floating point unorder comparison. The probability
; of NaN should be extremely small.
; CHECK: Printing analysis 'Branch Probability Analysis' for function 'uno'
; CHECK: edge -> a probability is 0x00000800 / 0x80000000 = 0.00%
; CHECK: edge -> b probability is 0x7ffff800 / 0x80000000 = 100.00% [HOT edge]
define void @uno(float %val1, float %val2) {
%cond = fcmp uno float %val1, %val2
br i1 %cond, label %a, label %b
a:
call void @fa()
ret void
b:
call void @fb()
ret void
}
; This function tests the floating point order comparison.
; CHECK: Printing analysis 'Branch Probability Analysis' for function 'ord'
; CHECK: edge -> a probability is 0x7ffff800 / 0x80000000 = 100.00% [HOT edge]
; CHECK: edge -> b probability is 0x00000800 / 0x80000000 = 0.00%
define void @ord(float %val1, float %val2) {
%cond = fcmp ord float %val1, %val2
br i1 %cond, label %a, label %b
a:
call void @fa()
ret void
b:
call void @fb()
ret void
}
declare void @fa()
declare void @fb()
|