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