[WebAssembly] Lower memmove to memory.copy
Summary: The lowering is identical to the memcpy lowering.
Reviewers: aheejin
Subscribers: dschuff, sbc100, jgravelle-google, hiraditya, sunfish, llvm-commits
Tags: #llvm
Differential Revision: https://reviews.llvm.org/D57727
llvm-svn: 353216
diff --git a/llvm/test/CodeGen/WebAssembly/bulk-memory.ll b/llvm/test/CodeGen/WebAssembly/bulk-memory.ll
index 9c3a61d..acece86 100644
--- a/llvm/test/CodeGen/WebAssembly/bulk-memory.ll
+++ b/llvm/test/CodeGen/WebAssembly/bulk-memory.ll
@@ -19,6 +19,19 @@
ret void
}
+; CHECK-LABEL: memmove_i8:
+; NO-BULK-MEM-NOT: memory.copy
+; BULK-MEM-NEXT: .functype memmove_i8 (i32, i32, i32) -> ()
+; BULK-MEM-NEXT: memory.copy $0, $1, $2
+; BULK-MEM-NEXT: return
+declare void @llvm.memmove.p0i8.p0i8.i32(
+ i8* %dest, i8* %src, i32 %len, i1 %volatile
+)
+define void @memmove_i8(i8* %dest, i8* %src, i32 %len) {
+ call void @llvm.memmove.p0i8.p0i8.i32(i8* %dest, i8* %src, i32 %len, i1 0)
+ ret void
+}
+
; CHECK-LABEL: memcpy_i32:
; NO-BULK-MEM-NOT: memory.copy
; BULK-MEM-NEXT: .functype memcpy_i32 (i32, i32, i32) -> ()
@@ -32,6 +45,19 @@
ret void
}
+; CHECK-LABEL: memmove_i32:
+; NO-BULK-MEM-NOT: memory.copy
+; BULK-MEM-NEXT: .functype memmove_i32 (i32, i32, i32) -> ()
+; BULK-MEM-NEXT: memory.copy $0, $1, $2
+; BULK-MEM-NEXT: return
+declare void @llvm.memmove.p0i32.p0i32.i32(
+ i32* %dest, i32* %src, i32 %len, i1 %volatile
+)
+define void @memmove_i32(i32* %dest, i32* %src, i32 %len) {
+ call void @llvm.memmove.p0i32.p0i32.i32(i32* %dest, i32* %src, i32 %len, i1 0)
+ ret void
+}
+
; CHECK-LABEL: memcpy_1:
; CHECK-NEXT: .functype memcpy_1 (i32, i32) -> ()
; CHECK-NEXT: i32.load8_u $push[[L0:[0-9]+]]=, 0($1)
@@ -42,6 +68,16 @@
ret void
}
+; CHECK-LABEL: memmove_1:
+; CHECK-NEXT: .functype memmove_1 (i32, i32) -> ()
+; CHECK-NEXT: i32.load8_u $push[[L0:[0-9]+]]=, 0($1)
+; CHECK-NEXT: i32.store8 0($0), $pop[[L0]]
+; CHECK-NEXT: return
+define void @memmove_1(i8* %dest, i8* %src) {
+ call void @llvm.memmove.p0i8.p0i8.i32(i8* %dest, i8* %src, i32 1, i1 0)
+ ret void
+}
+
; CHECK-LABEL: memcpy_1024:
; NO-BULK-MEM-NOT: memory.copy
; BULK-MEM-NEXT: .functype memcpy_1024 (i32, i32) -> ()
@@ -52,3 +88,14 @@
call void @llvm.memcpy.p0i8.p0i8.i32(i8* %dest, i8* %src, i32 1024, i1 0)
ret void
}
+
+; CHECK-LABEL: memmove_1024:
+; NO-BULK-MEM-NOT: memory.copy
+; BULK-MEM-NEXT: .functype memmove_1024 (i32, i32) -> ()
+; BULK-MEM-NEXT: i32.const $push[[L0:[0-9]+]]=, 1024
+; BULK-MEM-NEXT: memory.copy $0, $1, $pop[[L0]]
+; BULK-MEM-NEXT: return
+define void @memmove_1024(i8* %dest, i8* %src) {
+ call void @llvm.memmove.p0i8.p0i8.i32(i8* %dest, i8* %src, i32 1024, i1 0)
+ ret void
+}