Revert LoopStrengthReduce.cpp to pre-r94061 for now.

llvm-svn: 94123

3 files changed, 4 insertions, 29 deletions

diff --git a/llvm/test/CodeGen/ARM/arm-negative-stride.ll b/llvm/test/CodeGen/ARM/arm-negative-stride.ll
index 52ab8717c15..72ec8efcc44 100644
--- a/llvm/test/CodeGen/ARM/arm-negative-stride.ll
+++ b/llvm/test/CodeGen/ARM/arm-negative-stride.ll
@@ -1,32 +1,7 @@
 ; RUN: llc < %s -march=arm | FileCheck %s
 
-; This loop is rewritten with an indvar which counts down, which
-; frees up a register from holding the trip count.
-
 define void @test(i32* %P, i32 %A, i32 %i) nounwind {
 entry:
-; CHECK: str r1, [{{r.*}}, +{{r.*}}, lsl #2]
-        icmp eq i32 %i, 0               ; <i1>:0 [#uses=1]
-        br i1 %0, label %return, label %bb
-
-bb:             ; preds = %bb, %entry
-        %indvar = phi i32 [ 0, %entry ], [ %indvar.next, %bb ]          ; <i32> [#uses=2]
-        %i_addr.09.0 = sub i32 %i, %indvar              ; <i32> [#uses=1]
-        %tmp2 = getelementptr i32* %P, i32 %i_addr.09.0         ; <i32*> [#uses=1]
-        store i32 %A, i32* %tmp2
-        %indvar.next = add i32 %indvar, 1               ; <i32> [#uses=2]
-        icmp eq i32 %indvar.next, %i            ; <i1>:1 [#uses=1]
-        br i1 %1, label %return, label %bb
-
-return:         ; preds = %bb, %entry
-        ret void
-}
-
-; This loop has a non-address use of the count-up indvar, so
-; it'll remain. Now the original store uses a negative-stride address.
-
-define void @test_with_forced_iv(i32* %P, i32 %A, i32 %i) nounwind {
-entry:
 ; CHECK: str r1, [{{r.*}}, -{{r.*}}, lsl #2]
         icmp eq i32 %i, 0               ; <i1>:0 [#uses=1]
         br i1 %0, label %return, label %bb
@@ -36,7 +11,6 @@ bb:             ; preds = %bb, %entry
         %i_addr.09.0 = sub i32 %i, %indvar              ; <i32> [#uses=1]
         %tmp2 = getelementptr i32* %P, i32 %i_addr.09.0         ; <i32*> [#uses=1]
         store i32 %A, i32* %tmp2
-        store i32 %indvar, i32* null
         %indvar.next = add i32 %indvar, 1               ; <i32> [#uses=2]
         icmp eq i32 %indvar.next, %i            ; <i1>:1 [#uses=1]
         br i1 %1, label %return, label %bb
diff --git a/llvm/test/CodeGen/ARM/lsr-code-insertion.ll b/llvm/test/CodeGen/ARM/lsr-code-insertion.ll
index 1bbb96deeef..507ec2c7bd3 100644
--- a/llvm/test/CodeGen/ARM/lsr-code-insertion.ll
+++ b/llvm/test/CodeGen/ARM/lsr-code-insertion.ll
@@ -1,5 +1,5 @@
-; RUN: llc < %s -stats |& grep {39.*Number of machine instrs printed}
-; RUN: llc < %s -stats |& not grep {.*Number of re-materialization}
+; RUN: llc < %s -stats |& grep {40.*Number of machine instrs printed}
+; RUN: llc < %s -stats |& grep {.*Number of re-materialization}
 ; This test really wants to check that the resultant "cond_true" block only 
 ; has a single store in it, and that cond_true55 only has code to materialize 
 ; the constant and do a store.  We do *not* want something like this:
diff --git a/llvm/test/CodeGen/ARM/remat.ll b/llvm/test/CodeGen/ARM/remat.ll
index 9072bcb762d..9565c8bca6b 100644
--- a/llvm/test/CodeGen/ARM/remat.ll
+++ b/llvm/test/CodeGen/ARM/remat.ll
@@ -1,4 +1,5 @@
-; RUN: llc < %s -mtriple=arm-apple-darwin -stats -info-output-file - | not grep "Number of re-materialization"
+; RUN: llc < %s -mtriple=arm-apple-darwin 
+; RUN: llc < %s -mtriple=arm-apple-darwin -stats -info-output-file - | grep "Number of re-materialization" | grep 3
 
 	%struct.CONTENTBOX = type { i32, i32, i32, i32, i32 }
 	%struct.LOCBOX = type { i32, i32, i32, i32 }