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, 234 deletions

diff --git a/llvm/test/Transforms/InstCombine/smax-icmp.ll b/llvm/test/Transforms/InstCombine/smax-icmp.ll
deleted file mode 100644
index e64626fc665..00000000000
--- a/llvm/test/Transforms/InstCombine/smax-icmp.ll
+++ /dev/null
@@ -1,234 +0,0 @@
-; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
-; RUN: opt -S -instcombine < %s | FileCheck %s
-
-; If we have an smax feeding a signed or equality icmp that shares an
-; operand with the smax, the compare should always be folded.
-; Test all 4 foldable predicates (eq,ne,sgt,sle) * 4 commutation
-; possibilities for each predicate. Note that folds to true/false
-; (predicate = sge/slt) or folds to an existing instruction should be
-; handled by InstSimplify.
-
-; smax(X, Y) == X --> X >= Y
-
-define i1 @eq_smax1(i32 %x, i32 %y) {
-; CHECK-LABEL: @eq_smax1(
-; CHECK-NEXT:    [[CMP2:%.*]] = icmp sge i32 %x, %y
-; CHECK-NEXT:    ret i1 [[CMP2]]
-;
-  %cmp1 = icmp sgt i32 %x, %y
-  %sel = select i1 %cmp1, i32 %x, i32 %y
-  %cmp2 = icmp eq i32 %sel, %x
-  ret i1 %cmp2
-}
-
-; Commute max operands.
-
-define i1 @eq_smax2(i32 %x, i32 %y) {
-; CHECK-LABEL: @eq_smax2(
-; CHECK-NEXT:    [[CMP2:%.*]] = icmp sge i32 %x, %y
-; CHECK-NEXT:    ret i1 [[CMP2]]
-;
-  %cmp1 = icmp sgt i32 %y, %x
-  %sel = select i1 %cmp1, i32 %y, i32 %x
-  %cmp2 = icmp eq i32 %sel, %x
-  ret i1 %cmp2
-}
-
-; Disguise the icmp predicate by commuting the max op to the RHS.
-
-define i1 @eq_smax3(i32 %a, i32 %y) {
-; CHECK-LABEL: @eq_smax3(
-; CHECK-NEXT:    [[X:%.*]] = add i32 %a, 3
-; CHECK-NEXT:    [[CMP2:%.*]] = icmp sge i32 [[X]], %y
-; CHECK-NEXT:    ret i1 [[CMP2]]
-;
-  %x = add i32 %a, 3 ; thwart complexity-based canonicalization
-  %cmp1 = icmp sgt i32 %x, %y
-  %sel = select i1 %cmp1, i32 %x, i32 %y
-  %cmp2 = icmp eq i32 %x, %sel
-  ret i1 %cmp2
-}
-
-; Commute max operands.
-
-define i1 @eq_smax4(i32 %a, i32 %y) {
-; CHECK-LABEL: @eq_smax4(
-; CHECK-NEXT:    [[X:%.*]] = add i32 %a, 3
-; CHECK-NEXT:    [[CMP2:%.*]] = icmp sge i32 [[X]], %y
-; CHECK-NEXT:    ret i1 [[CMP2]]
-;
-  %x = add i32 %a, 3 ; thwart complexity-based canonicalization
-  %cmp1 = icmp sgt i32 %y, %x
-  %sel = select i1 %cmp1, i32 %y, i32 %x
-  %cmp2 = icmp eq i32 %x, %sel
-  ret i1 %cmp2
-}
-
-; smax(X, Y) <= X --> X >= Y
-
-define i1 @sle_smax1(i32 %x, i32 %y) {
-; CHECK-LABEL: @sle_smax1(
-; CHECK-NEXT:    [[CMP2:%.*]] = icmp sge i32 %x, %y
-; CHECK-NEXT:    ret i1 [[CMP2]]
-;
-  %cmp1 = icmp sgt i32 %x, %y
-  %sel = select i1 %cmp1, i32 %x, i32 %y
-  %cmp2 = icmp sle i32 %sel, %x
-  ret i1 %cmp2
-}
-
-; Commute max operands.
-
-define i1 @sle_smax2(i32 %x, i32 %y) {
-; CHECK-LABEL: @sle_smax2(
-; CHECK-NEXT:    [[CMP2:%.*]] = icmp sge i32 %x, %y
-; CHECK-NEXT:    ret i1 [[CMP2]]
-;
-  %cmp1 = icmp sgt i32 %y, %x
-  %sel = select i1 %cmp1, i32 %y, i32 %x
-  %cmp2 = icmp sle i32 %sel, %x
-  ret i1 %cmp2
-}
-
-; Disguise the icmp predicate by commuting the max op to the RHS.
-
-define i1 @sle_smax3(i32 %a, i32 %y) {
-; CHECK-LABEL: @sle_smax3(
-; CHECK-NEXT:    [[X:%.*]] = add i32 %a, 3
-; CHECK-NEXT:    [[CMP2:%.*]] = icmp sge i32 [[X]], %y
-; CHECK-NEXT:    ret i1 [[CMP2]]
-;
-  %x = add i32 %a, 3 ; thwart complexity-based canonicalization
-  %cmp1 = icmp sgt i32 %x, %y
-  %sel = select i1 %cmp1, i32 %x, i32 %y
-  %cmp2 = icmp sge i32 %x, %sel
-  ret i1 %cmp2
-}
-
-; Commute max operands.
-
-define i1 @sle_smax4(i32 %a, i32 %y) {
-; CHECK-LABEL: @sle_smax4(
-; CHECK-NEXT:    [[X:%.*]] = add i32 %a, 3
-; CHECK-NEXT:    [[CMP2:%.*]] = icmp sge i32 [[X]], %y
-; CHECK-NEXT:    ret i1 [[CMP2]]
-;
-  %x = add i32 %a, 3 ; thwart complexity-based canonicalization
-  %cmp1 = icmp sgt i32 %y, %x
-  %sel = select i1 %cmp1, i32 %y, i32 %x
-  %cmp2 = icmp sge i32 %x, %sel
-  ret i1 %cmp2
-}
-
-; smax(X, Y) != X --> X < Y
-
-define i1 @ne_smax1(i32 %x, i32 %y) {
-; CHECK-LABEL: @ne_smax1(
-; CHECK-NEXT:    [[CMP2:%.*]] = icmp slt i32 %x, %y
-; CHECK-NEXT:    ret i1 [[CMP2]]
-;
-  %cmp1 = icmp sgt i32 %x, %y
-  %sel = select i1 %cmp1, i32 %x, i32 %y
-  %cmp2 = icmp ne i32 %sel, %x
-  ret i1 %cmp2
-}
-
-; Commute max operands.
-
-define i1 @ne_smax2(i32 %x, i32 %y) {
-; CHECK-LABEL: @ne_smax2(
-; CHECK-NEXT:    [[CMP1:%.*]] = icmp sgt i32 %y, %x
-; CHECK-NEXT:    ret i1 [[CMP1]]
-;
-  %cmp1 = icmp sgt i32 %y, %x
-  %sel = select i1 %cmp1, i32 %y, i32 %x
-  %cmp2 = icmp ne i32 %sel, %x
-  ret i1 %cmp2
-}
-
-; Disguise the icmp predicate by commuting the max op to the RHS.
-
-define i1 @ne_smax3(i32 %a, i32 %y) {
-; CHECK-LABEL: @ne_smax3(
-; CHECK-NEXT:    [[X:%.*]] = add i32 %a, 3
-; CHECK-NEXT:    [[CMP2:%.*]] = icmp slt i32 [[X]], %y
-; CHECK-NEXT:    ret i1 [[CMP2]]
-;
-  %x = add i32 %a, 3 ; thwart complexity-based canonicalization
-  %cmp1 = icmp sgt i32 %x, %y
-  %sel = select i1 %cmp1, i32 %x, i32 %y
-  %cmp2 = icmp ne i32 %x, %sel
-  ret i1 %cmp2
-}
-
-; Commute max operands.
-
-define i1 @ne_smax4(i32 %a, i32 %y) {
-; CHECK-LABEL: @ne_smax4(
-; CHECK-NEXT:    [[X:%.*]] = add i32 %a, 3
-; CHECK-NEXT:    [[CMP1:%.*]] = icmp slt i32 [[X]], %y
-; CHECK-NEXT:    ret i1 [[CMP1]]
-;
-  %x = add i32 %a, 3 ; thwart complexity-based canonicalization
-  %cmp1 = icmp sgt i32 %y, %x
-  %sel = select i1 %cmp1, i32 %y, i32 %x
-  %cmp2 = icmp ne i32 %x, %sel
-  ret i1 %cmp2
-}
-
-; smax(X, Y) > X --> X < Y
-
-define i1 @sgt_smax1(i32 %x, i32 %y) {
-; CHECK-LABEL: @sgt_smax1(
-; CHECK-NEXT:    [[CMP2:%.*]] = icmp slt i32 %x, %y
-; CHECK-NEXT:    ret i1 [[CMP2]]
-;
-  %cmp1 = icmp sgt i32 %x, %y
-  %sel = select i1 %cmp1, i32 %x, i32 %y
-  %cmp2 = icmp sgt i32 %sel, %x
-  ret i1 %cmp2
-}
-
-; Commute max operands.
-
-define i1 @sgt_smax2(i32 %x, i32 %y) {
-; CHECK-LABEL: @sgt_smax2(
-; CHECK-NEXT:    [[CMP1:%.*]] = icmp sgt i32 %y, %x
-; CHECK-NEXT:    ret i1 [[CMP1]]
-;
-  %cmp1 = icmp sgt i32 %y, %x
-  %sel = select i1 %cmp1, i32 %y, i32 %x
-  %cmp2 = icmp sgt i32 %sel, %x
-  ret i1 %cmp2
-}
-
-; Disguise the icmp predicate by commuting the max op to the RHS.
-
-define i1 @sgt_smax3(i32 %a, i32 %y) {
-; CHECK-LABEL: @sgt_smax3(
-; CHECK-NEXT:    [[X:%.*]] = add i32 %a, 3
-; CHECK-NEXT:    [[CMP2:%.*]] = icmp slt i32 [[X]], %y
-; CHECK-NEXT:    ret i1 [[CMP2]]
-;
-  %x = add i32 %a, 3 ; thwart complexity-based canonicalization
-  %cmp1 = icmp sgt i32 %x, %y
-  %sel = select i1 %cmp1, i32 %x, i32 %y
-  %cmp2 = icmp slt i32 %x, %sel
-  ret i1 %cmp2
-}
-
-; Commute max operands.
-
-define i1 @sgt_smax4(i32 %a, i32 %y) {
-; CHECK-LABEL: @sgt_smax4(
-; CHECK-NEXT:    [[X:%.*]] = add i32 %a, 3
-; CHECK-NEXT:    [[CMP1:%.*]] = icmp slt i32 [[X]], %y
-; CHECK-NEXT:    ret i1 [[CMP1]]
-;
-  %x = add i32 %a, 3 ; thwart complexity-based canonicalization
-  %cmp1 = icmp sgt i32 %y, %x
-  %sel = select i1 %cmp1, i32 %y, i32 %x
-  %cmp2 = icmp slt i32 %x, %sel
-  ret i1 %cmp2
-}
-