[PATCH] D77089: [CallSiteSplitting] Simplify isPredicateOnPHI & continue checking PHIs.
Florian Hahn via Phabricator via llvm-commits
llvm-commits at lists.llvm.org
Thu Apr 2 02:41:24 PDT 2020
This revision was automatically updated to reflect the committed changes.
Closed by commit rGa63b5c9e5319: [CallSiteSplitting] Simplify isPredicateOnPHI & continue checking PHIs. (authored by fhahn).
Repository:
rG LLVM Github Monorepo
CHANGES SINCE LAST ACTION
https://reviews.llvm.org/D77089/new/
https://reviews.llvm.org/D77089
Files:
llvm/lib/Transforms/Scalar/CallSiteSplitting.cpp
llvm/test/Transforms/CallSiteSplitting/callsite-split-or-phi.ll
Index: llvm/test/Transforms/CallSiteSplitting/callsite-split-or-phi.ll
===================================================================
--- llvm/test/Transforms/CallSiteSplitting/callsite-split-or-phi.ll
+++ llvm/test/Transforms/CallSiteSplitting/callsite-split-or-phi.ll
@@ -586,3 +586,37 @@
End:
ret void
}
+
+; CHECK-LABEL: i32 @test_multiple_phis(
+; CHECK: Header.split:
+; CHECK-NEXT: %r2 = call i32 @callee(i32* null, i32 1, i32 5)
+; CHECK-NEXT: br label %Tail
+
+; CHECK: TBB.split:
+; CHECK-NEXT: %r1 = call i32 @callee(i32* null, i32 2, i32 10)
+; CHECK-NEXT: br label %Tail
+
+; CHECK: Tail:
+; CHECK-NEXT: %phi.call = phi i32 [ %r1, %TBB.split ], [ %r2, %Header.split ]
+; CHECK-NEXT: %p.0 = phi i32 [ 0, %Header.split ], [ 99, %TBB.split ]
+; CHECK-NEXT: %res = add i32 %phi.call, %p.0
+; CHECK-NEXT: ret i32 %phi.call
+;
+define i32 @test_multiple_phis(i1 %c.1) {
+Header:
+ br i1 %c.1, label %Tail, label %TBB
+
+TBB:
+ br label %Tail
+
+Tail:
+ %p.0 = phi i32 [0, %Header], [99, %TBB]
+ %p.1 = phi i32[1, %Header], [2, %TBB]
+ %p.2 = phi i32 [5, %Header], [10, %TBB]
+ %r = call i32 @callee(i32* null, i32 %p.1, i32 %p.2)
+ %res = add i32 %r, %p.0
+ ret i32 %r
+
+End:
+ ret i32 10
+}
Index: llvm/lib/Transforms/Scalar/CallSiteSplitting.cpp
===================================================================
--- llvm/lib/Transforms/Scalar/CallSiteSplitting.cpp
+++ llvm/lib/Transforms/Scalar/CallSiteSplitting.cpp
@@ -424,22 +424,20 @@
if (Instr != Parent->getFirstNonPHIOrDbg())
return false;
- for (auto &BI : *Parent) {
- if (PHINode *PN = dyn_cast<PHINode>(&BI)) {
- for (auto &I : CS.args())
- if (&*I == PN) {
- assert(PN->getNumIncomingValues() == 2 &&
- "Unexpected number of incoming values");
- if (PN->getIncomingBlock(0) == PN->getIncomingBlock(1))
- return false;
- if (PN->getIncomingValue(0) == PN->getIncomingValue(1))
- continue;
- if (isa<Constant>(PN->getIncomingValue(0)) &&
- isa<Constant>(PN->getIncomingValue(1)))
- return true;
- }
+ for (auto &PN : Parent->phis()) {
+ for (auto &Arg : CS.args()) {
+ if (&*Arg != &PN)
+ continue;
+ assert(PN.getNumIncomingValues() == 2 &&
+ "Unexpected number of incoming values");
+ if (PN.getIncomingBlock(0) == PN.getIncomingBlock(1))
+ return false;
+ if (PN.getIncomingValue(0) == PN.getIncomingValue(1))
+ continue;
+ if (isa<Constant>(PN.getIncomingValue(0)) &&
+ isa<Constant>(PN.getIncomingValue(1)))
+ return true;
}
- break;
}
return false;
}
-------------- next part --------------
A non-text attachment was scrubbed...
Name: D77089.254464.patch
Type: text/x-patch
Size: 2706 bytes
Desc: not available
URL: <http://lists.llvm.org/pipermail/llvm-commits/attachments/20200402/0d854d5f/attachment.bin>
More information about the llvm-commits
mailing list