Use vld1/vst1 to load/store f64 if alignment is < 4 and the target allows unaligned access. rdar://12091029

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@161962 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 49 insertions, 17 deletions

diff --git a/test/CodeGen/ARM/unaligned_load_store.ll b/test/CodeGen/ARM/unaligned_load_store.ll
index a8237c60e4..869b92675d 100644
--- a/test/CodeGen/ARM/unaligned_load_store.ll
+++ b/test/CodeGen/ARM/unaligned_load_store.ll
@@ -1,25 +1,25 @@
-; RUN: llc < %s -march=arm -pre-RA-sched=source | FileCheck %s -check-prefix=GENERIC
-; RUN: llc < %s -mtriple=armv6-apple-darwin | FileCheck %s -check-prefix=DARWIN_V6
-; RUN: llc < %s -mtriple=armv6-apple-darwin -arm-strict-align | FileCheck %s -check-prefix=GENERIC
-; RUN: llc < %s -mtriple=armv6-linux | FileCheck %s -check-prefix=GENERIC
+; RUN: llc < %s -march=arm -pre-RA-sched=source | FileCheck %s -check-prefix=EXPANDED
+; RUN: llc < %s -mtriple=armv6-apple-darwin -mcpu=cortex-a8 -arm-strict-align -pre-RA-sched=source | FileCheck %s -check-prefix=EXPANDED
+; RUN: llc < %s -mtriple=armv6-apple-darwin -mcpu=cortex-a8 | FileCheck %s -check-prefix=UNALIGNED
 
 ; rdar://7113725
+; rdar://12091029
 
 define void @t(i8* nocapture %a, i8* nocapture %b) nounwind {
 entry:
-; GENERIC: t:
-; GENERIC: ldrb [[R2:r[0-9]+]]
-; GENERIC: ldrb [[R3:r[0-9]+]]
-; GENERIC: ldrb [[R12:r[0-9]+]]
-; GENERIC: ldrb [[R1:r[0-9]+]]
-; GENERIC: strb [[R1]]
-; GENERIC: strb [[R12]]
-; GENERIC: strb [[R3]]
-; GENERIC: strb [[R2]]
-
-; DARWIN_V6: t:
-; DARWIN_V6: ldr r1
-; DARWIN_V6: str r1
+; EXPANDED: t:
+; EXPANDED: ldrb [[R2:r[0-9]+]]
+; EXPANDED: ldrb [[R3:r[0-9]+]]
+; EXPANDED: ldrb [[R12:r[0-9]+]]
+; EXPANDED: ldrb [[R1:r[0-9]+]]
+; EXPANDED: strb [[R1]]
+; EXPANDED: strb [[R12]]
+; EXPANDED: strb [[R3]]
+; EXPANDED: strb [[R2]]
+
+; UNALIGNED: t:
+; UNALIGNED: ldr r1
+; UNALIGNED: str r1
 
   %__src1.i = bitcast i8* %b to i32*              ; <i32*> [#uses=1]
   %__dest2.i = bitcast i8* %a to i32*             ; <i32*> [#uses=1]
@@ -27,3 +27,35 @@ entry:
   store i32 %tmp.i, i32* %__dest2.i, align 1
   ret void
 }
+
+define void @hword(double* %a, double* %b) nounwind {
+entry:
+; EXPANDED: hword:
+; EXPANDED-NOT: vld1
+; EXPANDED: ldrh
+; EXPANDED-NOT: str1
+; EXPANDED: strh
+
+; UNALIGNED: hword:
+; UNALIGNED: vld1.16
+; UNALIGNED: vst1.16
+  %tmp = load double* %a, align 2
+  store double %tmp, double* %b, align 2
+  ret void
+}
+
+define void @byte(double* %a, double* %b) nounwind {
+entry:
+; EXPANDED: byte:
+; EXPANDED-NOT: vld1
+; EXPANDED: ldrb
+; EXPANDED-NOT: str1
+; EXPANDED: strb
+
+; UNALIGNED: byte:
+; UNALIGNED: vld1.8
+; UNALIGNED: vst1.8
+  %tmp = load double* %a, align 1
+  store double %tmp, double* %b, align 1
+  ret void
+}