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Erase all of the instructions that we RAUWed

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llvm-svn: 184969
This commit is contained in:
Nadav Rotem 2013-06-26 17:16:09 +00:00
parent f4bea6681b
commit 860aebf69a
2 changed files with 10 additions and 1 deletions
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9
lib/Transforms/Vectorize/SLPVectorizer.cpp
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@ -1302,6 +1302,7 @@ void FuncSLP::optimizeGatherSequence() {
// instructions. TODO: We can further optimize this scan if we split the // instructions. TODO: We can further optimize this scan if we split the
// instructions into different buckets based on the insert lane. // instructions into different buckets based on the insert lane.
SmallPtrSet<Instruction*, 16> Visited; SmallPtrSet<Instruction*, 16> Visited;
SmallPtrSet<Instruction*, 16> ToRemove;
ReversePostOrderTraversal<Function*> RPOT(F); ReversePostOrderTraversal<Function*> RPOT(F);
for (ReversePostOrderTraversal<Function*>::rpo_iterator I = RPOT.begin(), for (ReversePostOrderTraversal<Function*>::rpo_iterator I = RPOT.begin(),
E = RPOT.end(); I != E; ++I) { E = RPOT.end(); I != E; ++I) {
@ -1319,6 +1320,7 @@ void FuncSLP::optimizeGatherSequence() {
if (Insert->isIdenticalTo(*v) && if (Insert->isIdenticalTo(*v) &&
DT->dominates((*v)->getParent(), Insert->getParent())) { DT->dominates((*v)->getParent(), Insert->getParent())) {
Insert->replaceAllUsesWith(*v); Insert->replaceAllUsesWith(*v);
ToRemove.insert(Insert);
Insert = 0; Insert = 0;
break; break;
} }
@ -1327,6 +1329,13 @@ void FuncSLP::optimizeGatherSequence() {
Visited.insert(Insert); Visited.insert(Insert);
} }
} }
// Erase all of the instructions that we RAUWed.
for (SmallPtrSet<Instruction*, 16>::iterator v = ToRemove.begin(),
ve = ToRemove.end(); v != ve; ++v) {
assert((*v)->getNumUses() == 0 && "Can't remove instructions with uses");
(*v)->eraseFromParent();
}
} }
/// The SLPVectorizer Pass. /// The SLPVectorizer Pass.

2
test/Transforms/SLPVectorizer/X86/cse.ll
View File

@ -1,4 +1,4 @@
; RUN: opt < %s -basicaa -slp-vectorizer -dce -S -mtriple=i386-apple-macosx10.8.0 -mcpu=corei7-avx | FileCheck %s ; RUN: opt < %s -basicaa -slp-vectorizer -S -mtriple=i386-apple-macosx10.8.0 -mcpu=corei7-avx | FileCheck %s
target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f80:128:128-n8:16:32-S128" target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f80:128:128-n8:16:32-S128"
target triple = "i386-apple-macosx10.8.0" target triple = "i386-apple-macosx10.8.0"