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, 150 deletions

diff --git a/llvm/test/Transforms/InstCombine/loadstore-metadata.ll b/llvm/test/Transforms/InstCombine/loadstore-metadata.ll
deleted file mode 100644
index 5916a8d3a4c..00000000000
--- a/llvm/test/Transforms/InstCombine/loadstore-metadata.ll
+++ /dev/null
@@ -1,150 +0,0 @@
-; RUN: opt -instcombine -S < %s | FileCheck %s
-
-target datalayout = "e-m:e-p:64:64:64-i64:64-f80:128-n8:16:32:64-S128"
-
-define i32 @test_load_cast_combine_tbaa(float* %ptr) {
-; Ensure (cast (load (...))) -> (load (cast (...))) preserves TBAA.
-; CHECK-LABEL: @test_load_cast_combine_tbaa(
-; CHECK: load i32, i32* %{{.*}}, !tbaa !0
-entry:
-  %l = load float, float* %ptr, !tbaa !0
-  %c = bitcast float %l to i32
-  ret i32 %c
-}
-
-define i32 @test_load_cast_combine_noalias(float* %ptr) {
-; Ensure (cast (load (...))) -> (load (cast (...))) preserves no-alias metadata.
-; CHECK-LABEL: @test_load_cast_combine_noalias(
-; CHECK: load i32, i32* %{{.*}}, !alias.scope !3, !noalias !4
-entry:
-  %l = load float, float* %ptr, !alias.scope !3, !noalias !4
-  %c = bitcast float %l to i32
-  ret i32 %c
-}
-
-define float @test_load_cast_combine_range(i32* %ptr) {
-; Ensure (cast (load (...))) -> (load (cast (...))) drops range metadata. It
-; would be nice to preserve or update it somehow but this is hard when moving
-; between types.
-; CHECK-LABEL: @test_load_cast_combine_range(
-; CHECK: load float, float* %{{.*}}
-; CHECK-NOT: !range
-; CHECK: ret float
-entry:
-  %l = load i32, i32* %ptr, !range !5
-  %c = bitcast i32 %l to float
-  ret float %c
-}
-
-define i32 @test_load_cast_combine_invariant(float* %ptr) {
-; Ensure (cast (load (...))) -> (load (cast (...))) preserves invariant metadata.
-; CHECK-LABEL: @test_load_cast_combine_invariant(
-; CHECK: load i32, i32* %{{.*}}, !invariant.load !7
-entry:
-  %l = load float, float* %ptr, !invariant.load !6
-  %c = bitcast float %l to i32
-  ret i32 %c
-}
-
-define i32 @test_load_cast_combine_nontemporal(float* %ptr) {
-; Ensure (cast (load (...))) -> (load (cast (...))) preserves nontemporal
-; metadata.
-; CHECK-LABEL: @test_load_cast_combine_nontemporal(
-; CHECK: load i32, i32* %{{.*}}, !nontemporal !8
-entry:
-  %l = load float, float* %ptr, !nontemporal !7
-  %c = bitcast float %l to i32
-  ret i32 %c
-}
-
-define i8* @test_load_cast_combine_align(i32** %ptr) {
-; Ensure (cast (load (...))) -> (load (cast (...))) preserves align
-; metadata.
-; CHECK-LABEL: @test_load_cast_combine_align(
-; CHECK: load i8*, i8** %{{.*}}, !align !9
-entry:
-  %l = load i32*, i32** %ptr, !align !8
-  %c = bitcast i32* %l to i8*
-  ret i8* %c
-}
-
-define i8* @test_load_cast_combine_deref(i32** %ptr) {
-; Ensure (cast (load (...))) -> (load (cast (...))) preserves dereferenceable
-; metadata.
-; CHECK-LABEL: @test_load_cast_combine_deref(
-; CHECK: load i8*, i8** %{{.*}}, !dereferenceable !9
-entry:
-  %l = load i32*, i32** %ptr, !dereferenceable !8
-  %c = bitcast i32* %l to i8*
-  ret i8* %c
-}
-
-define i8* @test_load_cast_combine_deref_or_null(i32** %ptr) {
-; Ensure (cast (load (...))) -> (load (cast (...))) preserves
-; dereferenceable_or_null metadata.
-; CHECK-LABEL: @test_load_cast_combine_deref_or_null(
-; CHECK: load i8*, i8** %{{.*}}, !dereferenceable_or_null !9
-entry:
-  %l = load i32*, i32** %ptr, !dereferenceable_or_null !8
-  %c = bitcast i32* %l to i8*
-  ret i8* %c
-}
-
-define void @test_load_cast_combine_loop(float* %src, i32* %dst, i32 %n) {
-; Ensure (cast (load (...))) -> (load (cast (...))) preserves loop access
-; metadata.
-; CHECK-LABEL: @test_load_cast_combine_loop(
-; CHECK: load i32, i32* %{{.*}}, !llvm.access.group !6
-entry:
-  br label %loop
-
-loop:
-  %i = phi i32 [ 0, %entry ], [ %i.next, %loop ]
-  %src.gep = getelementptr inbounds float, float* %src, i32 %i
-  %dst.gep = getelementptr inbounds i32, i32* %dst, i32 %i
-  %l = load float, float* %src.gep, !llvm.access.group !9
-  %c = bitcast float %l to i32
-  store i32 %c, i32* %dst.gep
-  %i.next = add i32 %i, 1
-  %cmp = icmp slt i32 %i.next, %n
-  br i1 %cmp, label %loop, label %exit, !llvm.loop !1
-
-exit:
-  ret void
-}
-
-define void @test_load_cast_combine_nonnull(float** %ptr) {
-; We can't preserve nonnull metadata when converting a load of a pointer to
-; a load of an integer. Instead, we translate it to range metadata.
-; FIXME: We should also transform range metadata back into nonnull metadata.
-; FIXME: This test is very fragile. If any LABEL lines are added after
-; this point, the test will fail, because this test depends on a metadata tuple,
-; which is always emitted at the end of the file. At some point, we should
-; consider an option to the IR printer to emit MD tuples after the function
-; that first uses them--this will allow us to refer to them like this and not
-; have the tests break. For now, this function must always come last in this
-; file, and no LABEL lines are to be added after this point.
-;
-; CHECK-LABEL: @test_load_cast_combine_nonnull(
-; CHECK: %[[V:.*]] = load i64, i64* %{{.*}}, !range ![[MD:[0-9]+]]
-; CHECK-NOT: !nonnull
-; CHECK: store i64 %[[V]], i64*
-entry:
-  %p = load float*, float** %ptr, !nonnull !6
-  %gep = getelementptr float*, float** %ptr, i32 42
-  store float* %p, float** %gep
-  ret void
-}
-
-; This is the metadata tuple that we reference above:
-; CHECK: ![[MD]] = !{i64 1, i64 0}
-!0 = !{!1, !1, i64 0}
-!1 = !{!"scalar type", !2}
-!2 = !{!"root"}
-!3 = distinct !{!3, !4}
-!4 = distinct !{!4, !{!"llvm.loop.parallel_accesses", !9}}
-!5 = !{i32 0, i32 42}
-!6 = !{}
-!7 = !{i32 1}
-!8 = !{i64 8}
-!9 = distinct !{}