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Summary: The current default of appending "_"+entry block label to the new extracted cold function breaks demangling. Change the deliminator from "_" to "." to enable demangling. Because the header block label will be empty for release compile code, use "extracted" after the "." when the label is empty. Additionally, add a mechanism for the client to pass in an alternate suffix applied after the ".", and have the hot cold split pass use "cold."+Count, where the Count is currently 1 but can be used to uniquely number multiple cold functions split out from the same function with D53588. Reviewers: sebpop, hiraditya Subscribers: llvm-commits, erik.pilkington Differential Revision: https://reviews.llvm.org/D53534 llvm-svn: 345178
44 lines
978 B
LLVM
44 lines
978 B
LLVM
; RUN: llvm-extract -S -bb foo:bb4 %s | FileCheck %s
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; CHECK: declare void @bar()
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define void @bar() {
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bb:
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ret void
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}
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; CHECK-NOT: @unused()
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define void @unused() {
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bb:
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ret void
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}
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; CHECK: @foo.bb4
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; CHECK: call void @bar()
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; CHECK: %tmp5
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define i32 @foo(i32 %arg) {
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bb:
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%tmp = alloca i32, align 4
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%tmp1 = alloca i32, align 4
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store i32 %arg, i32* %tmp1, align 4
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%tmp2 = load i32, i32* %tmp1, align 4
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%tmp3 = icmp sgt i32 %tmp2, 0
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br i1 %tmp3, label %bb4, label %bb7
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bb4: ; preds = %bb
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call void @bar()
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%tmp5 = load i32, i32* %tmp1, align 4
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%tmp6 = add nsw i32 %tmp5, 1
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store i32 %tmp6, i32* %tmp1, align 4
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store i32 %tmp6, i32* %tmp, align 4
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br label %bb8
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bb7: ; preds = %bb
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store i32 0, i32* %tmp, align 4
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br label %bb8
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bb8: ; preds = %bb7, %bb4
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%tmp9 = load i32, i32* %tmp, align 4
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ret i32 %tmp9
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}
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