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| -rw-r--r-- | lib/Target/README.txt | 33 |
1 files changed, 0 insertions, 33 deletions
diff --git a/lib/Target/README.txt b/lib/Target/README.txt index 6bac630..e7a55a0 100644 --- a/lib/Target/README.txt +++ b/lib/Target/README.txt @@ -1196,39 +1196,6 @@ bb3: ; preds = %bb1, %bb2, %bb GCC PR33344 is a similar case. -//===---------------------------------------------------------------------===// - -[PHI TRANSLATE INDEXED GEPs] PR5313 - -Load redundancy elimination for simple loop. This loop: - -void append_text(const char* text,unsigned char * const io) { - while(*text) - *io=*text++; -} - -Compiles to have a fully redundant load in the loop (%2): - -define void @append_text(i8* nocapture %text, i8* nocapture %io) nounwind { -entry: - %0 = load i8* %text, align 1 ; <i8> [#uses=1] - %1 = icmp eq i8 %0, 0 ; <i1> [#uses=1] - br i1 %1, label %return, label %bb - -bb: ; preds = %bb, %entry - %indvar = phi i32 [ 0, %entry ], [ %tmp, %bb ] ; <i32> [#uses=2] - %text_addr.04 = getelementptr i8* %text, i32 %indvar ; <i8*> [#uses=1] - %2 = load i8* %text_addr.04, align 1 ; <i8> [#uses=1] - store i8 %2, i8* %io, align 1 - %tmp = add i32 %indvar, 1 ; <i32> [#uses=2] - %scevgep = getelementptr i8* %text, i32 %tmp ; <i8*> [#uses=1] - %3 = load i8* %scevgep, align 1 ; <i8> [#uses=1] - %4 = icmp eq i8 %3, 0 ; <i1> [#uses=1] - br i1 %4, label %return, label %bb - -return: ; preds = %bb, %entry - ret void -} //===---------------------------------------------------------------------===// |