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[AlwaysInliner] Emit optimization remarks

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To match the normal inliner in preparation for https://reviews.llvm.org/D86988.

Also change a FIXME to an assert.

Reviewed By: davidxl

Differential Revision: https://reviews.llvm.org/D88067
This commit is contained in:
Arthur Eubanks 2020-09-01 15:55:05 -07:00
parent d7a47f201a
commit 8627066bb0
2 changed files with 35 additions and 15 deletions
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25
lib/Transforms/IPO/AlwaysInliner.cpp
View File

@ -54,12 +54,25 @@ PreservedAnalyses AlwaysInlinerPass::run(Module &M,
if (CB->getCalledFunction() == &F)
Calls.insert(CB);
for (CallBase *CB : Calls)
// FIXME: We really shouldn't be able to fail to inline at this point!
// We should do something to log or check the inline failures here.
Changed |=
InlineFunction(*CB, IFI, /*CalleeAAR=*/nullptr, InsertLifetime)
.isSuccess();
for (CallBase *CB : Calls) {
Function *Caller = CB->getCaller();
OptimizationRemarkEmitter ORE(Caller);
auto OIC = shouldInline(
*CB,
[&](CallBase &CB) {
return InlineCost::getAlways("always inline attribute");
},
ORE);
assert(OIC);
emitInlinedInto(ORE, CB->getDebugLoc(), CB->getParent(), F, *Caller,
*OIC, false, DEBUG_TYPE);
InlineResult Res =
InlineFunction(*CB, IFI, /*CalleeAAR=*/nullptr, InsertLifetime);
assert(Res.isSuccess() && "unexpected failure to inline");
(void)Res;
Changed = true;
}
// Remember to try and delete this function afterward. This both avoids
// re-walking the rest of the module and avoids dealing with any iterator

25
test/Transforms/Inline/optimization-remarks.ll
View File

@ -1,28 +1,35 @@
; RUN: opt < %s -inline -pass-remarks=inline -pass-remarks-missed=inline \
; RUN: -pass-remarks-analysis=inline -S 2>&1 | \
; RUN: FileCheck -check-prefix=CHECK -check-prefix=NO_HOTNESS %s
; RUN: FileCheck -check-prefixes=CHECK,NO_HOTNESS,ALWAYS %s
; RUN: opt < %s -inline -pass-remarks=inline -pass-remarks-missed=inline \
; RUN: -pass-remarks-analysis=inline -pass-remarks-with-hotness -S 2>&1 | \
; RUN: FileCheck -check-prefix=CHECK -check-prefix=HOTNESS %s
; RUN: FileCheck -check-prefixes=CHECK,HOTNESS,ALWAYS %s
; RUN: opt < %s -passes=always-inline -pass-remarks=inline -pass-remarks-missed=inline \
; RUN: -pass-remarks-analysis=inline -S 2>&1 | \
; RUN: FileCheck -check-prefixes=ALWAYS %s
; RUN: opt < %s -passes=always-inline -pass-remarks=inline -pass-remarks-missed=inline \
; RUN: -pass-remarks-analysis=inline -pass-remarks-with-hotness -S 2>&1 | \
; RUN: FileCheck -check-prefixes=ALWAYS %s
; RUN: opt < %s -passes=inline -pass-remarks=inline -pass-remarks-missed=inline \
; RUN: -pass-remarks-analysis=inline -S 2>&1 | \
; RUN: FileCheck -check-prefix=CHECK -check-prefix=NO_HOTNESS %s
; RUN: FileCheck -check-prefixes=CHECK,NO_HOTNESS,ALWAYS %s
; RUN: opt < %s -passes=inline -pass-remarks=inline -pass-remarks-missed=inline \
; RUN: -pass-remarks-analysis=inline -pass-remarks-with-hotness -S 2>&1 | \
; RUN: FileCheck -check-prefix=CHECK -check-prefix=HOTNESS %s
; RUN: FileCheck -check-prefixes=CHECK,HOTNESS,ALWAYS %s
; RUN: opt < %s -passes=inliner-wrapper -pass-remarks=inline -pass-remarks-missed=inline \
; RUN: -pass-remarks-analysis=inline -S 2>&1 | \
; RUN: FileCheck -check-prefix=CHECK -check-prefix=NO_HOTNESS %s
; RUN: FileCheck -check-prefixes=CHECK,NO_HOTNESS,ALWAYS %s
; RUN: opt < %s -passes=inliner-wrapper -pass-remarks=inline -pass-remarks-missed=inline \
; RUN: -pass-remarks-analysis=inline -pass-remarks-with-hotness -S 2>&1 | \
; RUN: FileCheck -check-prefix=CHECK -check-prefix=HOTNESS %s
; RUN: FileCheck -check-prefixes=CHECK,HOTNESS,ALWAYS %s
; HOTNESS: fox will not be inlined into bar because its definition is unavailable
; HOTNESS-DAG: fox will not be inlined into bar because its definition is unavailable
; NO_HOTNESS-NOT: fox will not be inlined into bar because its definition is unavailable
; CHECK: foo inlined into bar with (cost=always): always inline attribute
; CHECK: foz not inlined into bar because it should never be inlined (cost=never): noinline function attribute
; ALWAYS-DAG: foo inlined into bar with (cost=always): always inline attribute
; CHECK-DAG: foz not inlined into bar because it should never be inlined (cost=never): noinline function attribute
; Function Attrs: alwaysinline nounwind uwtable
define i32 @foo(i32 %x, i32 %y) #0 !prof !1 {