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7b37d7f7bc
Summary:
Thanks to Bill Wendling (void) for the report and steps to reproduce. It looks
like this was missed during r350508's cleanup of the CallSite split into
CallBase, CallInst, and CallBrInst.
This was exposed by running pgo on a callbr, which was creating a ptrtoint to
the inline asm thinking it was an indirect call. The relevant callchain looks
like:
IndirectCallPromotionPlugin::run()
-> PGOIndirectCallVisitor::findIndirectCalls()
-> PGOIndirectCallVisitor::visitCallBase()
-> CallBase::isIndirectCall()
Reviewers: void, chandlerc
Reviewed By: void
Subscribers: hiraditya, llvm-commits, craig.topper, srhines
Tags: #llvm
Differential Revision: https://reviews.llvm.org/D77600
18 lines
428 B
LLVM
18 lines
428 B
LLVM
; RUN: opt -pgo-instr-gen -S 2>&1 < %s | FileCheck %s
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define i32 @a() {
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entry:
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; CHECK-NOT: ptrtoint void (i8*)* asm sideeffect
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; CHECK: callbr void asm sideeffect
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%retval = alloca i32, align 4
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callbr void asm sideeffect "", "X,~{dirflag},~{fpsr},~{flags}"(i8* blockaddress(@a, %b)) #1
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to label %asm.fallthrough [label %b]
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asm.fallthrough:
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br label %b
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b:
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%0 = load i32, i32* %retval, align 4
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ret i32 %0
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}
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