[WebAssembly] Omit no-op adds for non-mem uses of FrameIndex
Differential Revision: http://reviews.llvm.org/D16554
llvm-svn: 258872
diff --git a/llvm/test/CodeGen/WebAssembly/mem-intrinsics.ll b/llvm/test/CodeGen/WebAssembly/mem-intrinsics.ll
index bb7e8dd..669f6ec 100644
--- a/llvm/test/CodeGen/WebAssembly/mem-intrinsics.ll
+++ b/llvm/test/CodeGen/WebAssembly/mem-intrinsics.ll
@@ -59,13 +59,18 @@
ret void
}
+
; CHECK-LABEL: frame_index:
; CHECK: i32.call $discard=, memset@FUNCTION, $3, $pop1, $pop0{{$}}
+; CHECK: i32.call $discard=, memset@FUNCTION, $4, $pop3, $pop2{{$}}
; CHECK: return{{$}}
define void @frame_index() {
entry:
%a = alloca [2048 x i8], align 16
+ %b = alloca [2048 x i8], align 16
%0 = getelementptr inbounds [2048 x i8], [2048 x i8]* %a, i32 0, i32 0
+ %1 = getelementptr inbounds [2048 x i8], [2048 x i8]* %b, i32 0, i32 0
call void @llvm.memset.p0i8.i32(i8* %0, i8 256, i32 1024, i32 16, i1 false)
+ call void @llvm.memset.p0i8.i32(i8* %1, i8 256, i32 1024, i32 16, i1 false)
ret void
}
diff --git a/llvm/test/CodeGen/WebAssembly/userstack.ll b/llvm/test/CodeGen/WebAssembly/userstack.ll
index 222f996..72160cd 100644
--- a/llvm/test/CodeGen/WebAssembly/userstack.ll
+++ b/llvm/test/CodeGen/WebAssembly/userstack.ll
@@ -76,6 +76,24 @@
ret void
}
+declare void @ext_func(i64* %ptr)
+; CHECK-LABEL: non_mem_use
+define void @non_mem_use() {
+ ; CHECK: i32.const [[L2:.+]]=, 16
+ ; CHECK-NEXT: i32.sub [[SP:.+]]=, {{.+}}, [[L2]]
+ %r = alloca i64
+ %r2 = alloca i64
+ ; %r is at SP+8
+ ; CHECK: i32.const [[OFF:.+]]=, 8
+ ; CHECK-NEXT: i32.add [[ARG1:.+]]=, [[SP]], [[OFF]]
+ ; CHECK-NEXT: call ext_func@FUNCTION, [[ARG1]]
+ call void @ext_func(i64* %r)
+ ; %r2 is at SP+0, no add needed
+ ; CHECK-NEXT: call ext_func@FUNCTION, [[SP]]
+ call void @ext_func(i64* %r2)
+ ret void
+}
+
; CHECK-LABEL: allocarray_inbounds:
; CHECK: .local i32, i32, i32, i32{{$}}
define void @allocarray_inbounds() {