22 lines
649 B
LLVM
22 lines
649 B
LLVM
; RUN: opt -analyze -branch-prob < %s | FileCheck %s
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; RUN: opt < %s -passes='print<branch-prob>' -disable-output 2>&1 | FileCheck %s
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declare i32 @llvm.experimental.deoptimize.i32(...)
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define i32 @test1(i32 %a, i32 %b) {
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; CHECK-LABEL: Printing analysis {{.*}} for function 'test1':
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entry:
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%cond = icmp eq i32 %a, 42
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br i1 %cond, label %exit, label %deopt
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; CHECK: edge entry -> exit probability is 0x7fffffff / 0x80000000 = 100.00% [HOT edge]
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; CHECK: edge entry -> deopt probability is 0x00000001 / 0x80000000 = 0.00%
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deopt:
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%rval = call i32(...) @llvm.experimental.deoptimize.i32() [ "deopt"() ]
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ret i32 %rval
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exit:
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ret i32 %b
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}
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