vendor/llvm/llvm-trunk-r338150

1 files changed, 33 insertions, 5 deletions

diff --git a/test/CodeGen/AArch64/arm64-misaligned-memcpy-inline.ll b/test/CodeGen/AArch64/arm64-misaligned-memcpy-inline.ll
index 85572f2cf0f8..8216e3d8e5ba 100644
--- a/test/CodeGen/AArch64/arm64-misaligned-memcpy-inline.ll
+++ b/test/CodeGen/AArch64/arm64-misaligned-memcpy-inline.ll
@@ -1,14 +1,42 @@
 ; RUN: llc -mtriple=arm64-apple-ios -mattr=+strict-align < %s | FileCheck %s
 
-; Small (16-bytes here) unaligned memcpys should stay memcpy calls if
+; Small (16 bytes here) unaligned memcpy() should be a function call if
 ; strict-alignment is turned on.
 define void @t0(i8* %out, i8* %in) {
 ; CHECK-LABEL: t0:
-; CHECK:         orr w2, wzr, #0x10
-; CHECK-NEXT:    bl _memcpy
+; CHECK:      orr w2, wzr, #0x10
+; CHECK-NEXT: bl _memcpy
 entry:
-  call void @llvm.memcpy.p0i8.p0i8.i64(i8* %out, i8* %in, i64 16, i32 1, i1 false)
+  call void @llvm.memcpy.p0i8.p0i8.i64(i8* %out, i8* %in, i64 16, i1 false)
   ret void
 }
 
-declare void @llvm.memcpy.p0i8.p0i8.i64(i8* nocapture, i8* nocapture readonly, i64, i32, i1)
+; Small (16 bytes here) aligned memcpy() should be inlined even if
+; strict-alignment is turned on.
+define void @t1(i8* align 8 %out, i8* align 8 %in) {
+; CHECK-LABEL: t1:
+; CHECK:      ldp x{{[0-9]+}}, x{{[0-9]+}}, [x1]
+; CHECK-NEXT: stp x{{[0-9]+}}, x{{[0-9]+}}, [x0]
+entry:
+  call void @llvm.memcpy.p0i8.p0i8.i64(i8* align 8 %out, i8* align 8 %in, i64 16, i1 false)
+  ret void
+}
+
+; Tiny (4 bytes here) unaligned memcpy() should be inlined with byte sized
+; loads and stores if strict-alignment is turned on.
+define void @t2(i8* %out, i8* %in) {
+; CHECK-LABEL: t2:
+; CHECK:      ldrb w{{[0-9]+}}, [x1, #3]
+; CHECK-NEXT: ldrb w{{[0-9]+}}, [x1, #2]
+; CHECK-NEXT: ldrb w{{[0-9]+}}, [x1, #1]
+; CHECK-NEXT: ldrb w{{[0-9]+}}, [x1]
+; CHECK-NEXT: strb w{{[0-9]+}}, [x0, #3]
+; CHECK-NEXT: strb w{{[0-9]+}}, [x0, #2]
+; CHECK-NEXT: strb w{{[0-9]+}}, [x0, #1]
+; CHECK-NEXT: strb w{{[0-9]+}}, [x0]
+entry:
+  call void @llvm.memcpy.p0i8.p0i8.i64(i8* %out, i8* %in, i64 4, i1 false)
+  ret void
+}
+
+declare void @llvm.memcpy.p0i8.p0i8.i64(i8* nocapture, i8* nocapture readonly, i64, i1)