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, 74 deletions

diff --git a/llvm/test/Transforms/MemCpyOpt/stackrestore.ll b/llvm/test/Transforms/MemCpyOpt/stackrestore.ll
deleted file mode 100644
index 4bead3381cc..00000000000
--- a/llvm/test/Transforms/MemCpyOpt/stackrestore.ll
+++ /dev/null
@@ -1,74 +0,0 @@
-; RUN: opt -S -memcpyopt < %s | FileCheck %s
-
-; PR40118: BasicAA didn't realize that stackrestore ends the lifetime of
-; unescaped dynamic allocas, such as those that might come from inalloca.
-
-source_filename = "t.cpp"
-target datalayout = "e-m:x-p:32:32-i64:64-f80:32-n8:16:32-a:0:32-S32"
-target triple = "i686-unknown-windows-msvc19.14.26433"
-
-@str = internal constant [9 x i8] c"abcdxxxxx"
-
-
-; Test that we can propagate memcpy through an unescaped dynamic alloca across
-; a call to @external.
-
-define i32 @test_norestore(i32 %n) {
-  %tmpmem = alloca [10 x i8], align 4
-  %tmp = getelementptr inbounds [10 x i8], [10 x i8]* %tmpmem, i32 0, i32 0
-
-  ; Make a dynamic alloca, initialize it.
-  %p = alloca i8, i32 %n, align 4
-  call void @llvm.memcpy.p0i8.p0i8.i32(i8* %p, i8* align 1 getelementptr inbounds ([9 x i8], [9 x i8]* @str, i32 0, i32 0), i32 9, i1 false)
-
-  ; This extra byte exists to prevent memcpyopt from propagating @str.
-  %p10 = getelementptr inbounds i8, i8* %p, i32 9
-  store i8 0, i8* %p10
-
-  call void @llvm.memcpy.p0i8.p0i8.i32(i8* %tmp, i8* %p, i32 10, i1 false)
-  call void @external()
-  %heap = call i8* @malloc(i32 9)
-  call void @llvm.memcpy.p0i8.p0i8.i32(i8* %heap, i8* %tmp, i32 9, i1 false)
-  call void @useit(i8* %heap)
-  ret i32 0
-}
-
-; CHECK-LABEL: define i32 @test_norestore(i32 %n)
-; CHECK: call void @llvm.memcpy.p0i8.p0i8.i32(i8* %p, i8* align 1 getelementptr inbounds ([9 x i8], [9 x i8]* @str, i32 0, i32 0), i32 9, i1 false)
-; CHECK: call void @llvm.memcpy.p0i8.p0i8.i32(i8* %tmp, i8* %p, i32 10, i1 false)
-; CHECK: call void @llvm.memcpy.p0i8.p0i8.i32(i8* %heap, i8* %p, i32 9, i1 false)
-
-
-; Do not propagate memcpy from %p across the stackrestore.
-
-define i32 @test_stackrestore() {
-  %tmpmem = alloca [10 x i8], align 4
-  %tmp = getelementptr inbounds [10 x i8], [10 x i8]* %tmpmem, i32 0, i32 0
-  %inalloca.save = tail call i8* @llvm.stacksave()
-  %argmem = alloca inalloca [10 x i8], align 4
-  %p = getelementptr inbounds [10 x i8], [10 x i8]* %argmem, i32 0, i32 0
-  call void @llvm.memcpy.p0i8.p0i8.i32(i8* %p, i8* align 1 getelementptr inbounds ([9 x i8], [9 x i8]* @str, i32 0, i32 0), i32 9, i1 false)
-
-  ; This extra byte exists to prevent memcpyopt from propagating @str.
-  %p10 = getelementptr inbounds [10 x i8], [10 x i8]* %argmem, i32 0, i32 9
-  store i8 0, i8* %p10
-
-  call void @llvm.memcpy.p0i8.p0i8.i32(i8* %tmp, i8* %p, i32 10, i1 false)
-  call void @llvm.stackrestore(i8* %inalloca.save)
-  %heap = call i8* @malloc(i32 9)
-  call void @llvm.memcpy.p0i8.p0i8.i32(i8* %heap, i8* %tmp, i32 9, i1 false)
-  call void @useit(i8* %heap)
-  ret i32 0
-}
-
-; CHECK-LABEL: define i32 @test_stackrestore()
-; CHECK: call void @llvm.memcpy.p0i8.p0i8.i32(i8* %p, i8* align 1 getelementptr inbounds ([9 x i8], [9 x i8]* @str, i32 0, i32 0), i32 9, i1 false)
-; CHECK: call void @llvm.memcpy.p0i8.p0i8.i32(i8* %tmp, i8* %p, i32 10, i1 false)
-; CHECK: call void @llvm.memcpy.p0i8.p0i8.i32(i8* %heap, i8* %tmp, i32 9, i1 false)
-
-declare void @llvm.memcpy.p0i8.p0i8.i32(i8* nocapture writeonly, i8* nocapture readonly, i32, i1)
-declare i8* @llvm.stacksave()
-declare void @llvm.stackrestore(i8*)
-declare i8* @malloc(i32)
-declare void @useit(i8*)
-declare void @external()