Revert "Change memcpy/memset/memmove to have dest and source alignments."

[oota-llvm.git] / test / Transforms / MemCpyOpt / memcpy-to-memset-with-lifetimes.ll

diff --git a/test/Transforms/MemCpyOpt/memcpy-to-memset-with-lifetimes.ll b/test/Transforms/MemCpyOpt/memcpy-to-memset-with-lifetimes.ll
index d702f3ff852adb7bed5733eb178fa544db634c0e..e3e57f09d88f60ffb3405f67e44f76b5af92b592 100644 (file)
--- a/test/Transforms/MemCpyOpt/memcpy-to-memset-with-lifetimes.ll
+++ b/test/Transforms/MemCpyOpt/memcpy-to-memset-with-lifetimes.ll
@@ -3,20 +3,47 @@
 target datalayout = "e-i64:64-f80:128-n8:16:32:64-S128"
 target triple = "x86_64-unknown-linux-gnu"
 
-define void @foo([8 x i64]* noalias nocapture sret dereferenceable(64)) {
+define void @foo([8 x i64]* noalias nocapture sret dereferenceable(64) %sret) {
 entry-block:
   %a = alloca [8 x i64], align 8
-  %1 = bitcast [8 x i64]* %a to i8*
-  call void @llvm.lifetime.start(i64 64, i8* %1)
-  call void @llvm.memset.p0i8.i64(i8* %1, i8 0, i64 64, i32 8, i1 false)
-  %2 = bitcast [8 x i64]* %0 to i8*
-  call void @llvm.memcpy.p0i8.p0i8.i64(i8* %2, i8* %1, i64 64, i32 8, i1 false)
-  call void @llvm.lifetime.end(i64 64, i8* %1)
+  %a.cast = bitcast [8 x i64]* %a to i8*
+  call void @llvm.lifetime.start(i64 64, i8* %a.cast)
+  call void @llvm.memset.p0i8.i64(i8* %a.cast, i8 0, i64 64, i32 8, i1 false)
+  %sret.cast = bitcast [8 x i64]* %sret to i8*
+  call void @llvm.memcpy.p0i8.p0i8.i64(i8* %sret.cast, i8* %a.cast, i64 64, i32 8, i1 false)
+  call void @llvm.lifetime.end(i64 64, i8* %a.cast)
   ret void
 
 ; CHECK-LABEL: @foo(
-; CHECK: %1 = bitcast
-; CHECK: call void @llvm.memset
+; CHECK:         %[[sret_cast:[^=]+]] = bitcast [8 x i64]* %sret to i8*
+; CHECK-NEXT:    call void @llvm.memset.p0i8.i64(i8* %[[sret_cast]], i8 0, i64 64
+; CHECK-NOT: call void @llvm.memcpy
+; CHECK: ret void
+}
+
+define void @bar([8 x i64]* noalias nocapture sret dereferenceable(64) %sret, [8 x i64]* noalias nocapture dereferenceable(64) %out) {
+entry-block:
+  %a = alloca [8 x i64], align 8
+  %a.cast = bitcast [8 x i64]* %a to i8*
+  call void @llvm.lifetime.start(i64 64, i8* %a.cast)
+  call void @llvm.memset.p0i8.i64(i8* %a.cast, i8 0, i64 64, i32 8, i1 false)
+  %sret.cast = bitcast [8 x i64]* %sret to i8*
+  call void @llvm.memcpy.p0i8.p0i8.i64(i8* %sret.cast, i8* %a.cast, i64 64, i32 8, i1 false)
+  call void @llvm.memset.p0i8.i64(i8* %a.cast, i8 42, i64 32, i32 8, i1 false)
+  %out.cast = bitcast [8 x i64]* %out to i8*
+  call void @llvm.memcpy.p0i8.p0i8.i64(i8* %out.cast, i8* %a.cast, i64 64, i32 8, i1 false)
+  call void @llvm.lifetime.end(i64 64, i8* %a.cast)
+  ret void
+
+; CHECK-LABEL: @bar(
+; CHECK:         %[[a:[^=]+]] = alloca [8 x i64]
+; CHECK:         %[[a_cast:[^=]+]] = bitcast [8 x i64]* %[[a]] to i8*
+; CHECK:         call void @llvm.memset.p0i8.i64(i8* %[[a_cast]], i8 0, i64 64
+; CHECK:         %[[sret_cast:[^=]+]] = bitcast [8 x i64]* %sret to i8*
+; CHECK:         call void @llvm.memset.p0i8.i64(i8* %[[sret_cast]], i8 0, i64 64
+; CHECK:         call void @llvm.memset.p0i8.i64(i8* %[[a_cast]], i8 42, i64 32
+; CHECK:         %[[out_cast:[^=]+]] = bitcast [8 x i64]* %out to i8*
+; CHECK:         call void @llvm.memcpy.p0i8.p0i8.i64(i8* %[[out_cast]], i8* %[[a_cast]], i64 64
 ; CHECK-NOT: call void @llvm.memcpy
 ; CHECK: ret void
 }