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, 208 deletions

diff --git a/llvm/test/Transforms/LoopUnroll/full-unroll-keep-first-exit.ll b/llvm/test/Transforms/LoopUnroll/full-unroll-keep-first-exit.ll
deleted file mode 100644
index 682d1b35c1f..00000000000
--- a/llvm/test/Transforms/LoopUnroll/full-unroll-keep-first-exit.ll
+++ /dev/null
@@ -1,208 +0,0 @@
-; RUN: opt -S -loop-unroll < %s | FileCheck %s
-; RUN: opt -S -passes='require<opt-remark-emit>,loop(unroll-full)' < %s | FileCheck %s
-
-; Unroll twice, with first loop exit kept
-; CHECK-LABEL: @s32_max1
-; CHECK: do.body:
-; CHECK:  store
-; CHECK:  br i1 %cmp, label %do.body.1, label %do.end
-; CHECK: do.end:
-; CHECK:  ret void
-; CHECK: do.body.1:
-; CHECK:  store
-; CHECK:  br label %do.end
-define void @s32_max1(i32 %n, i32* %p) {
-entry:
-  %add = add i32 %n, 1
-  br label %do.body
-
-do.body:
-  %i.0 = phi i32 [ %n, %entry ], [ %inc, %do.body ]
-  %arrayidx = getelementptr i32, i32* %p, i32 %i.0
-  store i32 %i.0, i32* %arrayidx, align 4
-  %inc = add i32 %i.0, 1
-  %cmp = icmp slt i32 %i.0, %add
-  br i1 %cmp, label %do.body, label %do.end ; taken either 0 or 1 times
-
-do.end:
-  ret void
-}
-
-; Unroll thrice, with first loop exit kept
-; CHECK-LABEL: @s32_max2
-; CHECK: do.body:
-; CHECK:  store
-; CHECK:  br i1 %cmp, label %do.body.1, label %do.end
-; CHECK: do.end:
-; CHECK:  ret void
-; CHECK: do.body.1:
-; CHECK:  store
-; CHECK:  store
-; CHECK:  br label %do.end
-define void @s32_max2(i32 %n, i32* %p) {
-entry:
-  %add = add i32 %n, 2
-  br label %do.body
-
-do.body:
-  %i.0 = phi i32 [ %n, %entry ], [ %inc, %do.body ]
-  %arrayidx = getelementptr i32, i32* %p, i32 %i.0
-  store i32 %i.0, i32* %arrayidx, align 4
-  %inc = add i32 %i.0, 1
-  %cmp = icmp slt i32 %i.0, %add
-  br i1 %cmp, label %do.body, label %do.end ; taken either 0 or 2 times
-
-do.end:
-  ret void
-}
-
-; Should not be unrolled
-; CHECK-LABEL: @s32_maxx
-; CHECK: do.body:
-; CHECK: do.end:
-; CHECK-NOT: do.body.1:
-define void @s32_maxx(i32 %n, i32 %x, i32* %p) {
-entry:
-  %add = add i32 %x, %n
-  br label %do.body
-
-do.body:
-  %i.0 = phi i32 [ %n, %entry ], [ %inc, %do.body ]
-  %arrayidx = getelementptr i32, i32* %p, i32 %i.0
-  store i32 %i.0, i32* %arrayidx, align 4
-  %inc = add i32 %i.0, 1
-  %cmp = icmp slt i32 %i.0, %add
-  br i1 %cmp, label %do.body, label %do.end ; taken either 0 or x times
-
-do.end:
-  ret void
-}
-
-; Should not be unrolled
-; CHECK-LABEL: @s32_max2_unpredictable_exit
-; CHECK: do.body:
-; CHECK: do.end:
-; CHECK-NOT: do.body.1:
-define void @s32_max2_unpredictable_exit(i32 %n, i32 %x, i32* %p) {
-entry:
-  %add = add i32 %n, 2
-  br label %do.body
-
-do.body:
-  %i.0 = phi i32 [ %n, %entry ], [ %inc, %if.end ]
-  %cmp = icmp eq i32 %i.0, %x
-  br i1 %cmp, label %do.end, label %if.end ; unpredictable
-
-if.end:
-  %arrayidx = getelementptr i32, i32* %p, i32 %i.0
-  store i32 %i.0, i32* %arrayidx, align 4
-  %inc = add i32 %i.0, 1
-  %cmp1 = icmp slt i32 %i.0, %add
-  br i1 %cmp1, label %do.body, label %do.end ; taken either 0 or 2 times
-
-do.end:
-  ret void
-}
-
-; Unroll twice, with first loop exit kept
-; CHECK-LABEL: @u32_max1
-; CHECK: do.body:
-; CHECK:  store
-; CHECK:  br i1 %cmp, label %do.body.1, label %do.end
-; CHECK: do.end:
-; CHECK:  ret void
-; CHECK: do.body.1:
-; CHECK:  store
-; CHECK:  br label %do.end
-define void @u32_max1(i32 %n, i32* %p) {
-entry:
-  %add = add i32 %n, 1
-  br label %do.body
-
-do.body:
-  %i.0 = phi i32 [ %n, %entry ], [ %inc, %do.body ]
-  %arrayidx = getelementptr i32, i32* %p, i32 %i.0
-  store i32 %i.0, i32* %arrayidx, align 4
-  %inc = add i32 %i.0, 1
-  %cmp = icmp ult i32 %i.0, %add
-  br i1 %cmp, label %do.body, label %do.end ; taken either 0 or 1 times
-
-do.end:
-  ret void
-}
-
-; Unroll thrice, with first loop exit kept
-; CHECK-LABEL: @u32_max2
-; CHECK: do.body:
-; CHECK:  store
-; CHECK:  br i1 %cmp, label %do.body.1, label %do.end
-; CHECK: do.end:
-; CHECK:  ret void
-; CHECK: do.body.1:
-; CHECK:  store
-; CHECK:  store
-; CHECK:  br label %do.end
-define void @u32_max2(i32 %n, i32* %p) {
-entry:
-  %add = add i32 %n, 2
-  br label %do.body
-
-do.body:
-  %i.0 = phi i32 [ %n, %entry ], [ %inc, %do.body ]
-  %arrayidx = getelementptr i32, i32* %p, i32 %i.0
-  store i32 %i.0, i32* %arrayidx, align 4
-  %inc = add i32 %i.0, 1
-  %cmp = icmp ult i32 %i.0, %add
-  br i1 %cmp, label %do.body, label %do.end ; taken either 0 or 2 times
-
-do.end:
-  ret void
-}
-
-; Should not be unrolled
-; CHECK-LABEL: @u32_maxx
-; CHECK: do.body:
-; CHECK: do.end:
-; CHECK-NOT: do.body.1:
-define void @u32_maxx(i32 %n, i32 %x, i32* %p) {
-entry:
-  %add = add i32 %x, %n
-  br label %do.body
-
-do.body:
-  %i.0 = phi i32 [ %n, %entry ], [ %inc, %do.body ]
-  %arrayidx = getelementptr i32, i32* %p, i32 %i.0
-  store i32 %i.0, i32* %arrayidx, align 4
-  %inc = add i32 %i.0, 1
-  %cmp = icmp ult i32 %i.0, %add
-  br i1 %cmp, label %do.body, label %do.end ; taken either 0 or x times
-
-do.end:
-  ret void
-}
-
-; Should not be unrolled
-; CHECK-LABEL: @u32_max2_unpredictable_exit
-; CHECK: do.body:
-; CHECK: do.end:
-; CHECK-NOT: do.body.1:
-define void @u32_max2_unpredictable_exit(i32 %n, i32 %x, i32* %p) {
-entry:
-  %add = add i32 %n, 2
-  br label %do.body
-
-do.body:
-  %i.0 = phi i32 [ %n, %entry ], [ %inc, %if.end ]
-  %cmp = icmp eq i32 %i.0, %x
-  br i1 %cmp, label %do.end, label %if.end ; unpredictable
-
-if.end:
-  %arrayidx = getelementptr i32, i32* %p, i32 %i.0
-  store i32 %i.0, i32* %arrayidx, align 4
-  %inc = add i32 %i.0, 1
-  %cmp1 = icmp ult i32 %i.0, %add
-  br i1 %cmp1, label %do.body, label %do.end ; taken either 0 or 2 times
-
-do.end:
-  ret void
-}