-; RUN: llc < %s -march=x86-64 | FileCheck %s
+; RUN: llc < %s -mtriple=x86_64-unknown-linux-gnu | FileCheck %s -check-prefix=LINUX
+; RUN: llc < %s -mtriple=x86_64-apple-darwin | FileCheck %s -check-prefix=DARWIN
declare void @llvm.memcpy.p0i8.p0i8.i64(i8* nocapture, i8* nocapture, i64, i32, i1) nounwind
tail call void @llvm.memcpy.p0i8.p0i8.i64( i8* %a, i8* %b, i64 %n, i32 1, i1 0 )
ret i8* %a
-; CHECK: test1:
-; CHECK: memcpy
+; LINUX: test1:
+; LINUX: memcpy
}
; Variable memcpy's should lower to calls.
tail call void @llvm.memcpy.p0i8.p0i8.i64(i8* %tmp14, i8* %tmp25, i64 %n, i32 8, i1 0 )
ret i8* %tmp14
-; CHECK: test2:
-; CHECK: memcpy
+; LINUX: test2:
+; LINUX: memcpy
}
; Large constant memcpy's should lower to a call when optimizing for size.
; PR6623
+
+; On the other hand, Darwin's definition of -Os is optimizing for size without
+; hurting performance so it should just ignore optsize when expanding memcpy.
+; rdar://8821501
define void @test3(i8* nocapture %A, i8* nocapture %B) nounwind optsize noredzone {
entry:
tail call void @llvm.memcpy.p0i8.p0i8.i64(i8* %A, i8* %B, i64 64, i32 1, i1 false)
ret void
-; CHECK: test3:
-; CHECK: memcpy
+; LINUX: test3:
+; LINUX-NOT: memcpy
+; LINUX: movups
+; LINUX: movups
+; LINUX: movups
+; LINUX: movups
+; LINUX: movups
+; LINUX: movups
+; LINUX: movups
+; LINUX: movups
+
+; DARWIN: test3:
+; DARWIN-NOT: memcpy
+; DARWIN: movups
+; DARWIN: movups
+; DARWIN: movups
+; DARWIN: movups
+; DARWIN: movups
+; DARWIN: movups
+; DARWIN: movups
+; DARWIN: movups
+; DARWIN: movups
+; DARWIN: movups
+; DARWIN: movups
+; DARWIN: movups
+; DARWIN: movups
+; DARWIN: movups
+; DARWIN: movups
+; DARWIN: movups
}
; Large constant memcpy's should be inlined when not optimizing for size.
entry:
tail call void @llvm.memcpy.p0i8.p0i8.i64(i8* %A, i8* %B, i64 64, i32 1, i1 false)
ret void
-; CHECK: test4:
-; CHECK: movq
-; CHECK: movq
-; CHECK: movq
-; CHECK: movq
-; CHECK: movq
-; CHECK: movq
-; CHECK: movq
-; CHECK: movq
-; CHECK: movq
-; CHECK: movq
-; CHECK: movq
-; CHECK: movq
+; LINUX: test4:
+; LINUX movq
+; LINUX movq
+; LINUX movq
+; LINUX movq
+; LINUX movq
+; LINUX movq
+; LINUX movq
+; LINUX movq
+; LINUX movq
+; LINUX movq
+; LINUX movq
+; LINUX movq
}