; CHECK: Printing analysis {{.*}} for function 'test1'
entry:
br label %body
-; CHECK: edge entry -> body probability is 16 / 16 = 100%
+; CHECK: edge entry -> body probability is 0x80000000 / 0x80000000 = 100.00% [HOT edge]
body:
%iv = phi i32 [ 0, %entry ], [ %next, %body ]
%base = phi i32 [ 0, %entry ], [ %sum, %body ]
- %arrayidx = getelementptr inbounds i32* %a, i32 %iv
- %0 = load i32* %arrayidx
+ %arrayidx = getelementptr inbounds i32, i32* %a, i32 %iv
+ %0 = load i32, i32* %arrayidx
%sum = add nsw i32 %0, %base
%next = add i32 %iv, 1
%exitcond = icmp eq i32 %next, %i
br i1 %exitcond, label %exit, label %body
-; CHECK: edge body -> exit probability is 4 / 128
-; CHECK: edge body -> body probability is 124 / 128
+; CHECK: edge body -> exit probability is 0x04000000 / 0x80000000 = 3.12%
+; CHECK: edge body -> body probability is 0x7c000000 / 0x80000000 = 96.88% [HOT edge]
exit:
ret i32 %sum
entry:
%cond = icmp ult i32 %i, 42
br i1 %cond, label %then, label %else, !prof !0
-; CHECK: edge entry -> then probability is 64 / 68
-; CHECK: edge entry -> else probability is 4 / 68
+; CHECK: edge entry -> then probability is 0x78787878 / 0x80000000 = 94.12% [HOT edge]
+; CHECK: edge entry -> else probability is 0x07878788 / 0x80000000 = 5.88%
then:
br label %exit
-; CHECK: edge then -> exit probability is 16 / 16 = 100%
+; CHECK: edge then -> exit probability is 0x80000000 / 0x80000000 = 100.00% [HOT edge]
else:
br label %exit
-; CHECK: edge else -> exit probability is 16 / 16 = 100%
+; CHECK: edge else -> exit probability is 0x80000000 / 0x80000000 = 100.00% [HOT edge]
exit:
%result = phi i32 [ %a, %then ], [ %b, %else ]
ret i32 %result
}
-!0 = metadata !{metadata !"branch_weights", i32 64, i32 4}
+!0 = !{!"branch_weights", i32 64, i32 4}
define i32 @test3(i32 %i, i32 %a, i32 %b, i32 %c, i32 %d, i32 %e) {
; CHECK: Printing analysis {{.*}} for function 'test3'
i32 2, label %case_c
i32 3, label %case_d
i32 4, label %case_e ], !prof !1
-; CHECK: edge entry -> case_a probability is 4 / 80
-; CHECK: edge entry -> case_b probability is 4 / 80
-; CHECK: edge entry -> case_c probability is 64 / 80
-; CHECK: edge entry -> case_d probability is 4 / 80
-; CHECK: edge entry -> case_e probability is 4 / 80
+; CHECK: edge entry -> case_a probability is 0x06666666 / 0x80000000 = 5.00%
+; CHECK: edge entry -> case_b probability is 0x06666666 / 0x80000000 = 5.00%
+; CHECK: edge entry -> case_c probability is 0x66666666 / 0x80000000 = 80.00%
+; CHECK: edge entry -> case_d probability is 0x06666666 / 0x80000000 = 5.00%
+; CHECK: edge entry -> case_e probability is 0x06666666 / 0x80000000 = 5.00%
case_a:
br label %exit
-; CHECK: edge case_a -> exit probability is 16 / 16 = 100%
+; CHECK: edge case_a -> exit probability is 0x80000000 / 0x80000000 = 100.00% [HOT edge]
case_b:
br label %exit
-; CHECK: edge case_b -> exit probability is 16 / 16 = 100%
+; CHECK: edge case_b -> exit probability is 0x80000000 / 0x80000000 = 100.00% [HOT edge]
case_c:
br label %exit
-; CHECK: edge case_c -> exit probability is 16 / 16 = 100%
+; CHECK: edge case_c -> exit probability is 0x80000000 / 0x80000000 = 100.00% [HOT edge]
case_d:
br label %exit
-; CHECK: edge case_d -> exit probability is 16 / 16 = 100%
+; CHECK: edge case_d -> exit probability is 0x80000000 / 0x80000000 = 100.00% [HOT edge]
case_e:
br label %exit
-; CHECK: edge case_e -> exit probability is 16 / 16 = 100%
+; CHECK: edge case_e -> exit probability is 0x80000000 / 0x80000000 = 100.00% [HOT edge]
exit:
%result = phi i32 [ %a, %case_a ],
ret i32 %result
}
-!1 = metadata !{metadata !"branch_weights", i32 4, i32 4, i32 64, i32 4, i32 4}
+!1 = !{!"branch_weights", i32 4, i32 4, i32 64, i32 4, i32 4}
define i32 @test4(i32 %x) nounwind uwtable readnone ssp {
; CHECK: Printing analysis {{.*}} for function 'test4'
i64 2, label %sw.bb
i64 5, label %sw.bb1
], !prof !2
-; CHECK: edge entry -> return probability is 7 / 85
-; CHECK: edge entry -> sw.bb probability is 14 / 85
-; CHECK: edge entry -> sw.bb1 probability is 64 / 85
+; CHECK: edge entry -> return probability is 0x0a8a8a8b / 0x80000000 = 8.24%
+; CHECK: edge entry -> sw.bb probability is 0x15151515 / 0x80000000 = 16.47%
+; CHECK: edge entry -> sw.bb1 probability is 0x60606060 / 0x80000000 = 75.29%
sw.bb:
br label %return
ret i32 %retval.0
}
-!2 = metadata !{metadata !"branch_weights", i32 7, i32 6, i32 4, i32 4, i32 64}
+!2 = !{!"branch_weights", i32 7, i32 6, i32 4, i32 4, i32 64}
declare void @coldfunc() cold
; CHECK: Printing analysis {{.*}} for function 'test5'
entry:
br i1 %flag, label %then, label %else
-; CHECK: edge entry -> then probability is 4 / 68
-; CHECK: edge entry -> else probability is 64 / 68
+; CHECK: edge entry -> then probability is 0x07878788 / 0x80000000 = 5.88%
+; CHECK: edge entry -> else probability is 0x78787878 / 0x80000000 = 94.12% [HOT edge]
then:
call void @coldfunc()
br label %exit
-; CHECK: edge then -> exit probability is 16 / 16 = 100%
+; CHECK: edge then -> exit probability is 0x80000000 / 0x80000000 = 100.00% [HOT edge]
else:
br label %exit
-; CHECK: edge else -> exit probability is 16 / 16 = 100%
+; CHECK: edge else -> exit probability is 0x80000000 / 0x80000000 = 100.00% [HOT edge]
exit:
%result = phi i32 [ %a, %then ], [ %b, %else ]
; after that is fixed.
; CHECK: Printing analysis {{.*}} for function 'test_cold_call_sites'
-; CHECK: edge entry -> then probability is 4 / 68 = 5.88235%
-; CHECK: edge entry -> else probability is 64 / 68 = 94.1176% [HOT edge]
+; CHECK: edge entry -> then probability is 0x07878788 / 0x80000000 = 5.88%
+; CHECK: edge entry -> else probability is 0x78787878 / 0x80000000 = 94.12% [HOT edge]
entry:
- %gep1 = getelementptr i32* %a, i32 1
- %val1 = load i32* %gep1
+ %gep1 = getelementptr i32, i32* %a, i32 1
+ %val1 = load i32, i32* %gep1
%cond1 = icmp ugt i32 %val1, 1
br i1 %cond1, label %then, label %else
br label %exit
else:
- %gep2 = getelementptr i32* %a, i32 2
- %val2 = load i32* %gep2
+ %gep2 = getelementptr i32, i32* %a, i32 2
+ %val2 = load i32, i32* %gep2
%val3 = call i32 @regular_function(i32 %val2)
br label %exit
entry:
%cond = icmp eq i32 %i, 0
br i1 %cond, label %then, label %else
-; CHECK: edge entry -> then probability is 12 / 32
-; CHECK: edge entry -> else probability is 20 / 32
+; CHECK: edge entry -> then probability is 0x30000000 / 0x80000000 = 37.50%
+; CHECK: edge entry -> else probability is 0x50000000 / 0x80000000 = 62.50%
then:
br label %exit
entry:
%cond = icmp ne i32 %i, -1
br i1 %cond, label %then, label %else
-; CHECK: edge entry -> then probability is 20 / 32
-; CHECK: edge entry -> else probability is 12 / 32
+; CHECK: edge entry -> then probability is 0x50000000 / 0x80000000 = 62.50%
+; CHECK: edge entry -> else probability is 0x30000000 / 0x80000000 = 37.50%
then:
br label %exit
ret i32 %result
}
+define i32 @zero3(i32 %i, i32 %a, i32 %b) {
+; CHECK: Printing analysis {{.*}} for function 'zero3'
+entry:
+; AND'ing with a single bit bitmask essentially leads to a bool comparison,
+; meaning we don't have probability information.
+ %and = and i32 %i, 2
+ %tobool = icmp eq i32 %and, 0
+ br i1 %tobool, label %then, label %else
+; CHECK: edge entry -> then probability is 0x40000000 / 0x80000000 = 50.00%
+; CHECK: edge entry -> else probability is 0x40000000 / 0x80000000 = 50.00%
+
+then:
+; AND'ing with other bitmask might be something else, so we still assume the
+; usual probabilities.
+ %and2 = and i32 %i, 5
+ %tobool2 = icmp eq i32 %and2, 0
+ br i1 %tobool2, label %else, label %exit
+; CHECK: edge then -> else probability is 0x30000000 / 0x80000000 = 37.50%
+; CHECK: edge then -> exit probability is 0x50000000 / 0x80000000 = 62.50%
+
+else:
+ br label %exit
+
+exit:
+ %result = phi i32 [ %a, %then ], [ %b, %else ]
+ ret i32 %result
+}
+