Temporarily Revert "Add basic loop fusion pass."

As it's causing some bot failures (and per request from kbarton).

This reverts commit r358543/ab70da07286e618016e78247e4a24fcb84077fda.

llvm-svn: 358546

1 files changed, 0 insertions, 75 deletions

diff --git a/llvm/test/Transforms/InstCombine/shift-shift.ll b/llvm/test/Transforms/InstCombine/shift-shift.ll
deleted file mode 100644
index 6aa262fd931..00000000000
--- a/llvm/test/Transforms/InstCombine/shift-shift.ll
+++ /dev/null
@@ -1,75 +0,0 @@
-; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
-; RUN: opt < %s -instcombine -S | FileCheck %s
-
-; These would crash if we didn't check for a negative shift.
-
-; https://llvm.org/bugs/show_bug.cgi?id=12967
-
-define void @pr12967() {
-; CHECK-LABEL: @pr12967(
-; CHECK-NEXT:  entry:
-; CHECK-NEXT:    br label %loop
-; CHECK:       loop:
-; CHECK-NEXT:    br label %loop
-;
-entry:
-  br label %loop
-
-loop:
-  %c = phi i32 [ %shl, %loop ], [ undef, %entry ]
-  %shr = shl i32 %c, 7
-  %shl = lshr i32 %shr, -2
-  br label %loop
-}
-
-; https://llvm.org/bugs/show_bug.cgi?id=26760
-
-define void @pr26760() {
-; CHECK-LABEL: @pr26760(
-; CHECK-NEXT:  entry:
-; CHECK-NEXT:    br label %loop
-; CHECK:       loop:
-; CHECK-NEXT:    br label %loop
-;
-entry:
-  br label %loop
-
-loop:
-  %c = phi i32 [ %shl, %loop ], [ undef, %entry ]
-  %shr = lshr i32 %c, 7
-  %shl = shl i32 %shr, -2
-  br label %loop
-}
-
-; Converting the 2 shifts to SHL 6 without the AND is wrong.
-; https://llvm.org/bugs/show_bug.cgi?id=8547
-
-define i32 @pr8547(i32* %g) {
-; CHECK-LABEL: @pr8547(
-; CHECK-NEXT:  codeRepl:
-; CHECK-NEXT:    br label %for.cond
-; CHECK:       for.cond:
-; CHECK-NEXT:    [[STOREMERGE:%.*]] = phi i32 [ 0, %codeRepl ], [ 5, %for.cond ]
-; CHECK-NEXT:    store i32 [[STOREMERGE]], i32* %g, align 4
-; CHECK-NEXT:    [[TMP0:%.*]] = shl nuw nsw i32 [[STOREMERGE]], 6
-; CHECK-NEXT:    [[CONV2:%.*]] = and i32 [[TMP0]], 64
-; CHECK-NEXT:    [[TOBOOL:%.*]] = icmp eq i32 [[CONV2]], 0
-; CHECK-NEXT:    br i1 [[TOBOOL]], label %for.cond, label %codeRepl2
-; CHECK:       codeRepl2:
-; CHECK-NEXT:    ret i32 [[CONV2]]
-;
-codeRepl:
-  br label %for.cond
-
-for.cond:
-  %storemerge = phi i32 [ 0, %codeRepl ], [ 5, %for.cond ]
-  store i32 %storemerge, i32* %g, align 4
-  %shl = shl i32 %storemerge, 30
-  %conv2 = lshr i32 %shl, 24
-  %tobool = icmp eq i32 %conv2, 0
-  br i1 %tobool, label %for.cond, label %codeRepl2
-
-codeRepl2:
-  ret i32 %conv2
-}
-