461a1836d3
1) Use a static array of pointer to retain the dummy vars. 2) Associate liveness of the array with that of the runtime hook variable __llvm_profile_runtime. 3) Perform the runtime initialization through the runtime hook variable. 4) Preserve the runtime hook variable using the -u linker flag. Reviewed By: hubert.reinterpretcast Differential Revision: https://reviews.llvm.org/D136192
14 lines
547 B
LLVM
14 lines
547 B
LLVM
;; Emit the runtime hook even if there are no counter increments.
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; RUN: opt < %s -mtriple=x86_64-apple-macosx10.10.0 -passes=instrprof -S | FileCheck %s -check-prefixes=ALL,DARWIN
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; RUN: opt < %s -mtriple=x86_64-linux-unknown -passes=instrprof -S | FileCheck %s -check-prefixes=ALL,LINUX
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; RUN: opt < %s -mtriple=powerpc64-ibm-aix-xcoff -passes=instrprof -S | FileCheck %s -check-prefixes=ALL,LINUX
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; ALL-NOT: @__profc
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; ALL-NOT: @__profd
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; DARWIN: @__llvm_profile_runtime
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; LINUX-NOT: @__llvm_profile_runtime
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define void @foo() {
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ret void
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}
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