Imported Upstream version 5.18.0.167

Former-commit-id: 289509151e0fee68a1b591a20c9f109c3c789d3a

external/llvm/test/Transforms/MemCpyOpt/invariant.start.ll

@@ -1,49 +0,0 @@
-; MemCpy optimizations should take place even in presence of invariant.start
-; RUN: opt < %s -basicaa -memcpyopt -dse -S | FileCheck %s
-
-target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f80:128:128"
-
-target triple = "i686-apple-darwin9"
-
-%0 = type { x86_fp80, x86_fp80 }
-declare void @llvm.memcpy.p0i8.p0i8.i32(i8* nocapture, i8* nocapture, i32, i32,
-i1) nounwind
-declare void @llvm.memcpy.p0i8.p0i8.i64(i8* nocapture, i8* nocapture readonly,
-i64, i32, i1)
-declare void @llvm.memset.p0i8.i64(i8* nocapture, i8, i64, i32, i1)
-
-declare {}* @llvm.invariant.start.p0i8(i64, i8* nocapture) nounwind readonly
-
-; FIXME: The invariant.start does not modify %P.
-; The intermediate alloca and one of the memcpy's should be eliminated, the
-; other should be transformed to a memmove.
-define void @test1(i8* %P, i8* %Q) nounwind  {
-  %memtmp = alloca %0, align 16
-  %R = bitcast %0* %memtmp to i8*
-  call void @llvm.memcpy.p0i8.p0i8.i32(i8* %R, i8* %P, i32 32, i32 16, i1 false)
-  %i = call {}* @llvm.invariant.start.p0i8(i64 32, i8* %P)
-  call void @llvm.memcpy.p0i8.p0i8.i32(i8* %Q, i8* %R, i32 32, i32 16, i1 false)
-  ret void
-; CHECK-LABEL: @test1(
-; CHECK-NEXT: %memtmp = alloca %0, align 16
-; CHECK-NEXT: %R = bitcast %0* %memtmp to i8*
-; CHECK-NEXT: call void @llvm.memcpy.p0i8.p0i8.i32(i8* %R, i8* %P, i32 32, i32 16, i1 false)
-; CHECK-NEXT: %i = call {}* @llvm.invariant.start.p0i8(i64 32, i8* %P)
-; CHECK-NEXT: call void @llvm.memcpy.p0i8.p0i8.i32(i8* %Q, i8* %R, i32 32, i32 16, i1 false)
-; CHECK-NEXT: ret void
-}
-
-
-; The invariant.start intrinsic does not inhibit tranforming the memcpy to a
-; memset.
-define void @test2(i8* %dst1, i8* %dst2, i8 %c) {
-; CHECK-LABEL: define void @test2(
-; CHECK-NEXT: call void @llvm.memset.p0i8.i64(i8* %dst1, i8 %c, i64 128, i32 1, i1 false)
-; CHECK-NEXT: %i = call {}* @llvm.invariant.start.p0i8(i64 32, i8* %dst1)
-; CHECK-NEXT: call void @llvm.memset.p0i8.i64(i8* %dst2, i8 %c, i64 128, i32 8, i1 false)
-; CHECK-NEXT: ret void
-  call void @llvm.memset.p0i8.i64(i8* %dst1, i8 %c, i64 128, i32 1, i1 false)
-  %i = call {}* @llvm.invariant.start.p0i8(i64 32, i8* %dst1)
-  call void @llvm.memcpy.p0i8.p0i8.i64(i8* %dst2, i8* %dst1, i64 128, i32 8, i1 false)
-  ret void
-}