Changes in directory llvm/test/Regression/Transforms/LoopStrengthReduce:
nested-reduce.ll added (r1.1)
---
Log message:
new testcase
---
Diffs of the changes: (+57 -0)
nested-reduce.ll | 57 +++++++++++++++++++++++++++++++++++++++++++++++++++++++
1 files changed, 57 insertions(+)
Index: llvm/test/Regression/Transforms/LoopStrengthReduce/nested-reduce.ll
diff -c /dev/null
llvm/test/Regression/Transforms/LoopStrengthReduce/nested-reduce.ll:1.1
*** /dev/null Sun Oct 30 00:14:13 2005
--- llvm/test/Regression/Transforms/LoopStrengthReduce/nested-reduce.ll Sun Oct
30 00:14:03 2005
***************
*** 0 ****
--- 1,57 ----
+ ; RUN: llvm-as < %s | opt -loop-reduce &&
+ ; RUN: llvm-as < %s | opt -loop-reduce | llvm-dis | not grep mul
+
+ ; Make sure we don't get a multiply by 6 in this loop.
+
+ int %foo(int %A, int %B, int %C, int %D) {
+ entry:
+ %tmp.5 = setgt int %C, 0 ; <bool> [#uses=1]
+ %tmp.25 = and int %A, 1 ; <int> [#uses=1]
+ br label %loopentry.1
+
+ loopentry.1: ; preds = %loopexit.1, %entry
+ %indvar20 = phi uint [ 0, %entry ], [ %indvar.next21, %loopexit.1 ]
; <uint> [#uses=2]
+ %k.1 = phi int [ 0, %entry ], [ %k.1.3, %loopexit.1 ] ; <int>
[#uses=2]
+ br bool %tmp.5, label %no_exit.1.preheader, label %loopexit.1
+
+ no_exit.1.preheader: ; preds = %loopentry.1
+ %i.0.0 = cast uint %indvar20 to int ; <int> [#uses=1]
+ %tmp.9 = mul int %i.0.0, 6 ; <int> [#uses=1]
+ br label %no_exit.1.outer
+
+ no_exit.1.outer: ; preds = %cond_true, %no_exit.1.preheader
+ %k.1.2.ph = phi int [ %k.1, %no_exit.1.preheader ], [ %k.09, %cond_true
] ; <int> [#uses=2]
+ %j.1.2.ph = phi int [ 0, %no_exit.1.preheader ], [ %inc.1, %cond_true ]
; <int> [#uses=1]
+ br label %no_exit.1
+
+ no_exit.1: ; preds = %cond_continue, %no_exit.1.outer
+ %indvar = phi uint [ 0, %no_exit.1.outer ], [ %indvar.next,
%cond_continue ] ; <uint> [#uses=2]
+ %indvar = cast uint %indvar to int ; <int> [#uses=1]
+ %j.1.2 = add int %indvar, %j.1.2.ph ; <int> [#uses=2]
+ %tmp.11 = add int %j.1.2, %tmp.9 ; <int> [#uses=1]
+ %tmp.12 = cast int %tmp.11 to ubyte ; <ubyte> [#uses=1]
+ %tmp.13 = shl int %D, ubyte %tmp.12 ; <int> [#uses=2]
+ %tmp.15 = seteq int %tmp.13, %B ; <bool> [#uses=1]
+ %inc.1 = add int %j.1.2, 1 ; <int> [#uses=3]
+ br bool %tmp.15, label %cond_true, label %cond_continue
+
+ cond_true: ; preds = %no_exit.1
+ %tmp.26 = and int %tmp.25, %tmp.13 ; <int> [#uses=1]
+ %k.09 = add int %tmp.26, %k.1.2.ph ; <int> [#uses=2]
+ %tmp.517 = setlt int %inc.1, %C ; <bool> [#uses=1]
+ br bool %tmp.517, label %no_exit.1.outer, label %loopexit.1
+
+ cond_continue: ; preds = %no_exit.1
+ %tmp.519 = setlt int %inc.1, %C ; <bool> [#uses=1]
+ %indvar.next = add uint %indvar, 1 ; <uint> [#uses=1]
+ br bool %tmp.519, label %no_exit.1, label %loopexit.1
+
+ loopexit.1: ; preds = %cond_continue, %cond_true, %loopentry.1
+ %k.1.3 = phi int [ %k.1, %loopentry.1 ], [ %k.09, %cond_true ], [
%k.1.2.ph, %cond_continue ] ; <int> [#uses=2]
+ %indvar.next21 = add uint %indvar20, 1 ; <uint> [#uses=2]
+ %exitcond = seteq uint %indvar.next21, 4 ; <bool>
[#uses=1]
+ br bool %exitcond, label %loopexit.0, label %loopentry.1
+
+ loopexit.0: ; preds = %loopexit.1
+ ret int %k.1.3
+ }
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