c23b4fbdbb
Now that #149310 has restricted lifetime intrinsics to only work on allocas, we can also drop the explicit size argument. Instead, the size is implied by the alloca. This removes the ability to only mark a prefix of an alloca alive/dead. We never used that capability, so we should remove the need to handle that possibility everywhere (though many key places, including stack coloring, did not actually respect this).
84 lines
3.4 KiB
LLVM
84 lines
3.4 KiB
LLVM
; Test misexpect doesn't issue diagnostics when a branch is marked unpredictable
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; RUN: llvm-profdata merge %S/Inputs/misexpect-branch-correct.proftext -o %t.profdata
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; 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
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; CHECK-NOT: warning: {{.*}}
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; CHECK-NOT: remark: {{.*}}
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; ModuleID = 'misexpect-branch-unpredictable.c'
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source_filename = "clang/test/Profile/misexpect-branch-unpredictable.c"
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target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
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target triple = "x86_64-unknown-linux-gnu"
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@inner_loop = constant i32 100, align 4
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@outer_loop = constant i32 2000, align 4
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; Function Attrs: nounwind
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define i32 @bar() #0 {
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entry:
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%rando = alloca i32, align 4
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%x = alloca i32, align 4
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call void @llvm.lifetime.start.p0(ptr %rando) #3
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%call = call i32 (...) @buzz()
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store i32 %call, ptr %rando, align 4, !tbaa !2
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call void @llvm.lifetime.start.p0(ptr %x) #3
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store i32 0, ptr %x, align 4, !tbaa !2
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%0 = load i32, ptr %rando, align 4, !tbaa !2
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%rem = srem i32 %0, 200000
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%cmp = icmp eq i32 %rem, 0
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%lnot = xor i1 %cmp, true
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%lnot1 = xor i1 %lnot, true
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%lnot.ext = zext i1 %lnot1 to i32
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%conv = sext i32 %lnot.ext to i64
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%tobool = icmp ne i64 %conv, 0
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br i1 %tobool, label %if.then, label %if.else, !unpredictable !6
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if.then: ; preds = %entry
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%1 = load i32, ptr %rando, align 4, !tbaa !2
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%call2 = call i32 @baz(i32 %1)
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store i32 %call2, ptr %x, align 4, !tbaa !2
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br label %if.end
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if.else: ; preds = %entry
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%call3 = call i32 @foo(i32 50)
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store i32 %call3, ptr %x, align 4, !tbaa !2
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br label %if.end
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if.end: ; preds = %if.else, %if.then
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%2 = load i32, ptr %x, align 4, !tbaa !2
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call void @llvm.lifetime.end.p0(ptr %x) #3
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call void @llvm.lifetime.end.p0(ptr %rando) #3
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ret i32 %2
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}
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; Function Attrs: argmemonly nounwind willreturn
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declare void @llvm.lifetime.start.p0(ptr nocapture) #1
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declare i32 @buzz(...) #2
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declare i32 @baz(i32) #2
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declare i32 @foo(i32) #2
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; Function Attrs: argmemonly nounwind willreturn
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declare void @llvm.lifetime.end.p0(ptr nocapture) #1
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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" }
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attributes #1 = { argmemonly nounwind willreturn }
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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" }
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attributes #3 = { nounwind }
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!llvm.module.flags = !{!0}
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!llvm.ident = !{!1}
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!0 = !{i32 1, !"wchar_size", i32 4}
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!1 = !{!"Fuchsia clang version 10.0.0 (153b453014c94291c8c6cf6320b2f46df40f26f3) (based on LLVM 10.0.0svn)"}
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!2 = !{!3, !3, i64 0}
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!3 = !{!"int", !4, i64 0}
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!4 = !{!"omnipotent char", !5, i64 0}
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!5 = !{!"Simple C/C++ TBAA"}
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!6 = !{}
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