[llvm] [MemProf] Skip unmatched callers when cloning (PR #120455)

[Snehasish Kumar via llvm-commits]

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@@ -0,0 +1,70 @@
+;; Test callsite context graph generation for simple call graph with
+;; two memprof contexts and no inlining, where one callsite required for
+;; cloning is missing (e.g. unmatched).
+;;
+;; Original code looks like:
+;;
+;; char *foo() {
+;;   return new char[10];
+;; }
+;;
+;; int main(int argc, char **argv) {
+;;   char *x = foo();
+;;   char *y = foo();
+;;   memset(x, 0, 10);
+;;   memset(y, 0, 10);
+;;   delete[] x;
+;;   sleep(200);
+;;   delete[] y;
+;;   return 0;
+;; }
+
+; RUN: opt -thinlto-bc -memprof-report-hinted-sizes %s >%t.o
+; RUN: llvm-lto2 run %t.o -enable-memprof-context-disambiguation \
+; RUN:	-supports-hot-cold-new \
+; RUN:	-r=%t.o,main,plx \
+; RUN:	-r=%t.o,_Znam, \
+; RUN:	-memprof-report-hinted-sizes \
+; RUN:	-pass-remarks=memprof-context-disambiguation -save-temps \
+; RUN:	-o %t.out 2>&1 | FileCheck %s --implicit-check-not "call in clone _Z3foov" \
+; RUN:  --check-prefix=SIZESUNHINTED
+; RUN: llvm-dis %t.out.1.4.opt.bc -o - | FileCheck %s --implicit-check-not "memprof"="cold"
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snehasish wrote:

Is this argument to `--implicit-check-not` escaped properly? The other invocations only have a single string in quotes.

https://github.com/llvm/llvm-project/pull/120455