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authorPirama Arumuga Nainar <pirama@google.com>2015-04-10 21:22:52 +0000
committerGerrit Code Review <noreply-gerritcodereview@google.com>2015-04-10 21:23:04 +0000
commit31195f0bdca6ee2a5e72d07edf13e1d81206d949 (patch)
tree1b2c9792582e12f5af0b1512e3094425f0dc0df9 /test/CodeGen/X86/phielim-split.ll
parentc75239e6119d0f9a74c57099d91cbc9bde56bf33 (diff)
parent4c5e43da7792f75567b693105cc53e3f1992ad98 (diff)
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Merge "Update aosp/master llvm for rebase to r233350"
Diffstat (limited to 'test/CodeGen/X86/phielim-split.ll')
-rw-r--r--test/CodeGen/X86/phielim-split.ll43
1 files changed, 40 insertions, 3 deletions
diff --git a/test/CodeGen/X86/phielim-split.ll b/test/CodeGen/X86/phielim-split.ll
index aa47735..423ef04 100644
--- a/test/CodeGen/X86/phielim-split.ll
+++ b/test/CodeGen/X86/phielim-split.ll
@@ -1,4 +1,4 @@
-; RUN: llc < %s -verify-machineinstrs | FileCheck %s
+; RUN: llc < %s -verify-machineinstrs -no-phi-elim-live-out-early-exit | FileCheck %s
target triple = "x86_64-apple-macosx10.8.0"
; The critical edge from for.cond to if.end2 should be split to avoid injecting
@@ -18,8 +18,8 @@ entry:
for.cond: ; preds = %entry, %for.cond
%p.addr.0 = phi i8* [ %incdec.ptr, %for.cond ], [ %p, %entry ]
- %incdec.ptr = getelementptr inbounds i8* %p.addr.0, i64 1
- %0 = load i8* %p.addr.0, align 1
+ %incdec.ptr = getelementptr inbounds i8, i8* %p.addr.0, i64 1
+ %0 = load i8, i8* %p.addr.0, align 1
%tobool = icmp eq i8 %0, 0
br i1 %tobool, label %for.cond, label %if.end2
@@ -28,3 +28,40 @@ if.end2: ; preds = %for.cond, %entry
%add = add nsw i32 %r.0, %b
ret i32 %add
}
+
+; CHECK: split_live_out
+; CHECK: %while.body
+; CHECK: cmp
+; CHECK-NEXT: ja
+define i8* @split_live_out(i32 %value, i8* %target) nounwind uwtable readonly ssp {
+entry:
+ %cmp10 = icmp ugt i32 %value, 127
+ br i1 %cmp10, label %while.body.preheader, label %while.end
+
+while.body.preheader: ; preds = %entry
+ br label %while.body
+
+while.body: ; preds = %while.body.preheader, %while.body
+ %target.addr.012 = phi i8* [ %incdec.ptr, %while.body ], [ %target, %while.body.preheader ]
+ %value.addr.011 = phi i32 [ %shr, %while.body ], [ %value, %while.body.preheader ]
+ %or = or i32 %value.addr.011, 128
+ %conv = trunc i32 %or to i8
+ store i8 %conv, i8* %target.addr.012, align 1
+ %shr = lshr i32 %value.addr.011, 7
+ %incdec.ptr = getelementptr inbounds i8, i8* %target.addr.012, i64 1
+ %cmp = icmp ugt i32 %value.addr.011, 16383
+ br i1 %cmp, label %while.body, label %while.end.loopexit
+
+while.end.loopexit: ; preds = %while.body
+ %incdec.ptr.lcssa = phi i8* [ %incdec.ptr, %while.body ]
+ %shr.lcssa = phi i32 [ %shr, %while.body ]
+ br label %while.end
+
+while.end: ; preds = %while.end.loopexit, %entry
+ %target.addr.0.lcssa = phi i8* [ %target, %entry ], [ %incdec.ptr.lcssa, %while.end.loopexit ]
+ %value.addr.0.lcssa = phi i32 [ %value, %entry ], [ %shr.lcssa, %while.end.loopexit ]
+ %conv1 = trunc i32 %value.addr.0.lcssa to i8
+ store i8 %conv1, i8* %target.addr.0.lcssa, align 1
+ %incdec.ptr3 = getelementptr inbounds i8, i8* %target.addr.0.lcssa, i64 1
+ ret i8* %incdec.ptr3
+}