forked from OSchip/llvm-project
95 lines
3.9 KiB
LLVM
95 lines
3.9 KiB
LLVM
|
; RUN: llvm-profdata merge %S/Inputs/misexpect-branch-correct.proftext -o %t.profdata
|
||
|
|
|
||
|
|
; RUN: opt < %s -lower-expect -pgo-instr-use -pgo-test-profile-file=%t.profdata -S -pgo-warn-misexpect -pass-remarks=misexpect 2>&1 | FileCheck %s
|
||
|
|
|
||
|
|
; New PM
|
||
|
|
; RUN: opt < %s -passes="function(lower-expect),pgo-instr-use" -pgo-test-profile-file=%t.profdata -pgo-warn-misexpect -pass-remarks=misexpect -S 2>&1 | FileCheck %s
|
||
|
|
|
||
|
|
; CHECK-NOT: warning: {{.*}}
|
||
|
|
; CHECK-NOT: remark: {{.*}}
|
||
|
|
; CHECK: !{!"misexpect", i64 1, i64 2000, i64 1}
|
||
|
|
|
||
|
|
|
||
|
|
; ModuleID = 'misexpect-branch-correct.c'
|
||
|
|
source_filename = "misexpect-branch-correct.c"
|
||
|
|
target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
|
||
|
|
target triple = "x86_64-unknown-linux-gnu"
|
||
|
|
|
||
|
|
@inner_loop = constant i32 100, align 4
|
||
|
|
@outer_loop = constant i32 2000, align 4
|
||
|
|
|
||
|
|
; Function Attrs: nounwind
|
||
|
|
define i32 @bar() #0 {
|
||
|
|
entry:
|
||
|
|
%rando = alloca i32, align 4
|
||
|
|
%x = alloca i32, align 4
|
||
|
|
%0 = bitcast i32* %rando to i8*
|
||
|
|
call void @llvm.lifetime.start.p0i8(i64 4, i8* %0) #4
|
||
|
|
%call = call i32 (...) @buzz()
|
||
|
|
store i32 %call, i32* %rando, align 4, !tbaa !3
|
||
|
|
%1 = bitcast i32* %x to i8*
|
||
|
|
call void @llvm.lifetime.start.p0i8(i64 4, i8* %1) #4
|
||
|
|
store i32 0, i32* %x, align 4, !tbaa !3
|
||
|
|
%2 = load i32, i32* %rando, align 4, !tbaa !3
|
||
|
|
%rem = srem i32 %2, 200000
|
||
|
|
%cmp = icmp eq i32 %rem, 0
|
||
|
|
%lnot = xor i1 %cmp, true
|
||
|
|
%lnot1 = xor i1 %lnot, true
|
||
|
|
%lnot.ext = zext i1 %lnot1 to i32
|
||
|
|
%conv = sext i32 %lnot.ext to i64
|
||
|
|
%expval = call i64 @llvm.expect.i64(i64 %conv, i64 0)
|
||
|
|
%tobool = icmp ne i64 %expval, 0
|
||
|
|
br i1 %tobool, label %if.then, label %if.else
|
||
|
|
|
||
|
|
if.then: ; preds = %entry
|
||
|
|
%3 = load i32, i32* %rando, align 4, !tbaa !3
|
||
|
|
%call2 = call i32 @baz(i32 %3)
|
||
|
|
store i32 %call2, i32* %x, align 4, !tbaa !3
|
||
|
|
br label %if.end
|
||
|
|
|
||
|
|
if.else: ; preds = %entry
|
||
|
|
%call3 = call i32 @foo(i32 50)
|
||
|
|
store i32 %call3, i32* %x, align 4, !tbaa !3
|
||
|
|
br label %if.end
|
||
|
|
|
||
|
|
if.end: ; preds = %if.else, %if.then
|
||
|
|
%4 = load i32, i32* %x, align 4, !tbaa !3
|
||
|
|
%5 = bitcast i32* %x to i8*
|
||
|
|
call void @llvm.lifetime.end.p0i8(i64 4, i8* %5) #4
|
||
|
|
%6 = bitcast i32* %rando to i8*
|
||
|
|
call void @llvm.lifetime.end.p0i8(i64 4, i8* %6) #4
|
||
|
|
ret i32 %4
|
||
|
|
}
|
||
|
|
|
||
|
|
; Function Attrs: argmemonly nounwind willreturn
|
||
|
|
declare void @llvm.lifetime.start.p0i8(i64 immarg, i8* nocapture) #1
|
||
|
|
|
||
|
|
declare i32 @buzz(...) #2
|
||
|
|
|
||
|
|
; Function Attrs: nounwind readnone willreturn
|
||
|
|
declare i64 @llvm.expect.i64(i64, i64) #3
|
||
|
|
|
||
|
|
declare i32 @baz(i32) #2
|
||
|
|
|
||
|
|
declare i32 @foo(i32) #2
|
||
|
|
|
||
|
|
; Function Attrs: argmemonly nounwind willreturn
|
||
|
|
declare void @llvm.lifetime.end.p0i8(i64 immarg, i8* nocapture) #1
|
||
|
|
|
||
|
|
attributes #0 = { nounwind "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "frame-pointer"="none" "less-precise-fpmad"="false" "min-legal-vector-width"="0" "no-infs-fp-math"="false" "no-jump-tables"="false" "no-nans-fp-math"="false" "no-signed-zeros-fp-math"="false" "no-trapping-math"="false" "stack-protector-buffer-size"="8" "target-features"="+cx8,+mmx,+sse,+sse2,+x87" "unsafe-fp-math"="false" "use-soft-float"="false" }
|
||
|
|
attributes #1 = { argmemonly nounwind willreturn }
|
||
|
|
attributes #2 = { "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "frame-pointer"="none" "less-precise-fpmad"="false" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "no-signed-zeros-fp-math"="false" "no-trapping-math"="false" "stack-protector-buffer-size"="8" "target-features"="+cx8,+mmx,+sse,+sse2,+x87" "unsafe-fp-math"="false" "use-soft-float"="false" }
|
||
|
|
attributes #3 = { nounwind readnone willreturn }
|
||
|
|
attributes #4 = { nounwind }
|
||
|
|
|
||
|
|
!llvm.module.flags = !{!0, !1}
|
||
|
|
!llvm.ident = !{!2}
|
||
|
|
|
||
|
|
!0 = !{i32 2, !"Debug Info Version", i32 3}
|
||
|
|
!1 = !{i32 1, !"wchar_size", i32 4}
|
||
|
|
!2 = !{!"clang version 10.0.0 (c20270bfffc9d6965219de339d66c61e9fe7d82d)"}
|
||
|
|
!3 = !{!4, !4, i64 0}
|
||
|
|
!4 = !{!"int", !5, i64 0}
|
||
|
|
!5 = !{!"omnipotent char", !6, i64 0}
|
||
|
|
!6 = !{!"Simple C/C++ TBAA"}
|