bf6debcfe1
The previous fix in #157768 had a bug; instead of subtracting the original function's call count per call site of a specialization, we were subtracting the running total of the specialization's calls. Tracking issue: #147390
59 lines
2.2 KiB
LLVM
59 lines
2.2 KiB
LLVM
; RUN: opt -passes="ipsccp<func-spec>" -force-specialization -S < %s | FileCheck %s
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target datalayout = "e-m:e-i8:8:32-i16:16:32-i64:64-i128:128-n32:64-S128"
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@A = external dso_local constant i32, align 4
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@B = external dso_local constant i32, align 4
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; CHECK: define dso_local i32 @bar(i32 %x, i32 %y, ptr %z) !prof ![[BAR_PROF:[0-9]]] {
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define dso_local i32 @bar(i32 %x, i32 %y, ptr %z) !prof !0 {
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entry:
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%tobool = icmp ne i32 %x, 0
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; CHECK: br i1 %tobool, label %if.then, label %if.else, !prof ![[BRANCH_PROF:[0-9]]]
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br i1 %tobool, label %if.then, label %if.else, !prof !1
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; CHECK: if.then:
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; CHECK: call i32 @foo.specialized.1(i32 %x, ptr @A)
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; CHECK: call i32 @foo.specialized.2(i32 %y, ptr @B)
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; CHECK: call i32 @foo.specialized.2(i32 %y, ptr @B)
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if.then:
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%call = call i32 @foo(i32 %x, ptr @A)
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%call1 = call i32 @foo(i32 %y, ptr @B)
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%call2 = call i32 @foo(i32 %y, ptr @B)
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%add = add i32 %call, %call1
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%add1 = add i32 %add, %call2
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br label %return
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; CHECK: if.else:
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; CHECK: call i32 @foo.specialized.2(i32 %y, ptr @B)
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if.else:
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%call3 = call i32 @foo(i32 %y, ptr @B)
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br label %return
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; CHECK: return:
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; CHECK: call i32 @foo(i32 %x, ptr %z)
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return:
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%retval.0 = phi i32 [ %add1, %if.then ], [ %call3, %if.else ]
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%call4 = call i32 @foo(i32 %x, ptr %z);
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%add2 = add i32 %retval.0, %call4
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ret i32 %add2
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}
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; CHECK: define internal i32 @foo(i32 %x, ptr %b) !prof ![[FOO_UNSPEC_PROF:[0-9]]]
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; CHECK: define internal i32 @foo.specialized.1(i32 %x, ptr %b) !prof ![[FOO_SPEC_1_PROF:[0-9]]]
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; CHECK: define internal i32 @foo.specialized.2(i32 %x, ptr %b) !prof ![[FOO_SPEC_2_PROF:[0-9]]]
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define internal i32 @foo(i32 %x, ptr %b) !prof !2 {
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entry:
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%0 = load i32, ptr %b, align 4
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%add = add nsw i32 %x, %0
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ret i32 %add
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}
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; CHECK: ![[BAR_PROF]] = !{!"function_entry_count", i64 1000}
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; CHECK: ![[BRANCH_PROF]] = !{!"branch_weights", i32 1, i32 3}
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; CHECK: ![[FOO_UNSPEC_PROF]] = !{!"function_entry_count", i64 500}
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; CHECK: ![[FOO_SPEC_1_PROF]] = !{!"function_entry_count", i64 250}
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; CHECK: ![[FOO_SPEC_2_PROF]] = !{!"function_entry_count", i64 1250}
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!0 = !{!"function_entry_count", i64 1000}
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!1 = !{!"branch_weights", i32 1, i32 3}
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!2 = !{!"function_entry_count", i64 2000}
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