2 files changed, 56 insertions, 0 deletions
diff --git a/test/Transforms/MemCpyOpt/2011-06-02-CallSlotOverwritten.ll b/test/Transforms/MemCpyOpt/2011-06-02-CallSlotOverwritten.ll
new file mode 100644
index 0000000..132966e
--- /dev/null
+++ b/test/Transforms/MemCpyOpt/2011-06-02-CallSlotOverwritten.ll
@@ -0,0 +1,36 @@
+; RUN: opt < %s -basicaa -memcpyopt -S | FileCheck %s
+; PR10067
+; Make sure the call+copy isn't optimized in such a way that
+; %ret ends up with the wrong value.
+
+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-n8:16:32"
+target triple = "i386-apple-darwin10"
+
+%struct1 = type { i32, i32 }
+%struct2 = type { %struct1, i8* }
+
+declare void @bar(%struct1* nocapture sret %agg.result) nounwind
+
+define i32 @foo() nounwind {
+  %x = alloca %struct1, align 8
+  %y = alloca %struct2, align 8
+  call void @bar(%struct1* sret %x) nounwind
+; CHECK: call void @bar(%struct1* sret %x)
+
+  %gepn1 = getelementptr inbounds %struct2* %y, i32 0, i32 0, i32 0
+  store i32 0, i32* %gepn1, align 8
+  %gepn2 = getelementptr inbounds %struct2* %y, i32 0, i32 0, i32 1
+  store i32 0, i32* %gepn2, align 4
+
+  %bit1 = bitcast %struct1* %x to i64*
+  %bit2 = bitcast %struct2* %y to i64*
+  %load = load i64* %bit1, align 8
+  store i64 %load, i64* %bit2, align 8
+
+; CHECK: %load = load i64* %bit1, align 8
+; CHECK: store i64 %load, i64* %bit2, align 8
+
+  %gep1 = getelementptr %struct2* %y, i32 0, i32 0, i32 0
+  %ret = load i32* %gep1
+  ret i32 %ret
+}
diff --git a/test/Transforms/MemCpyOpt/memcpy.ll b/test/Transforms/MemCpyOpt/memcpy.ll
index b387d32..5c6a94c 100644
--- a/test/Transforms/MemCpyOpt/memcpy.ll
+++ b/test/Transforms/MemCpyOpt/memcpy.ll
@@ -109,3 +109,23 @@ define void @test6(i8 *%P) {
 ; CHECK-NEXT: ret void
 }
 
+
+; PR9794 - Should forward memcpy into byval argument even though the memcpy
+; isn't itself 8 byte aligned.
+%struct.p = type { i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32 }
+
+define i32 @test7(%struct.p* nocapture byval align 8 %q) nounwind ssp {
+entry:
+  %agg.tmp = alloca %struct.p, align 4
+  %tmp = bitcast %struct.p* %agg.tmp to i8*
+  %tmp1 = bitcast %struct.p* %q to i8*
+  call void @llvm.memcpy.p0i8.p0i8.i64(i8* %tmp, i8* %tmp1, i64 48, i32 4, i1 false)
+  %call = call i32 @g(%struct.p* byval align 8 %agg.tmp) nounwind
+  ret i32 %call
+; CHECK: @test7
+; CHECK: call i32 @g(%struct.p* byval align 8 %q) nounwind
+}
+
+declare i32 @g(%struct.p* byval align 8)
+
+