You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
141 lines
4.3 KiB
141 lines
4.3 KiB
; RUN: llc < %s -asm-verbose=false -disable-wasm-fallthrough-return-opt | FileCheck %s
|
|
|
|
; Test memcpy, memmove, and memset intrinsics.
|
|
|
|
target datalayout = "e-m:e-p:32:32-i64:64-n32:64-S128"
|
|
target triple = "wasm32-unknown-unknown"
|
|
|
|
declare void @llvm.memcpy.p0i8.p0i8.i32(i8* nocapture, i8* nocapture readonly, i32, i32, i1)
|
|
declare void @llvm.memmove.p0i8.p0i8.i32(i8* nocapture, i8* nocapture readonly, i32, i32, i1)
|
|
declare void @llvm.memset.p0i8.i32(i8* nocapture, i8, i32, i32, i1)
|
|
|
|
; Test that return values are optimized.
|
|
|
|
; CHECK-LABEL: copy_yes:
|
|
; CHECK: i32.call $push0=, memcpy@FUNCTION, $0, $1, $2{{$}}
|
|
; CHECK-NEXT: return $pop0{{$}}
|
|
define i8* @copy_yes(i8* %dst, i8* %src, i32 %len) {
|
|
call void @llvm.memcpy.p0i8.p0i8.i32(i8* %dst, i8* %src, i32 %len, i32 1, i1 false)
|
|
ret i8* %dst
|
|
}
|
|
|
|
; CHECK-LABEL: copy_no:
|
|
; CHECK: i32.call $drop=, memcpy@FUNCTION, $0, $1, $2{{$}}
|
|
; CHECK-NEXT: return{{$}}
|
|
define void @copy_no(i8* %dst, i8* %src, i32 %len) {
|
|
call void @llvm.memcpy.p0i8.p0i8.i32(i8* %dst, i8* %src, i32 %len, i32 1, i1 false)
|
|
ret void
|
|
}
|
|
|
|
; CHECK-LABEL: move_yes:
|
|
; CHECK: i32.call $push0=, memmove@FUNCTION, $0, $1, $2{{$}}
|
|
; CHECK-NEXT: return $pop0{{$}}
|
|
define i8* @move_yes(i8* %dst, i8* %src, i32 %len) {
|
|
call void @llvm.memmove.p0i8.p0i8.i32(i8* %dst, i8* %src, i32 %len, i32 1, i1 false)
|
|
ret i8* %dst
|
|
}
|
|
|
|
; CHECK-LABEL: move_no:
|
|
; CHECK: i32.call $drop=, memmove@FUNCTION, $0, $1, $2{{$}}
|
|
; CHECK-NEXT: return{{$}}
|
|
define void @move_no(i8* %dst, i8* %src, i32 %len) {
|
|
call void @llvm.memmove.p0i8.p0i8.i32(i8* %dst, i8* %src, i32 %len, i32 1, i1 false)
|
|
ret void
|
|
}
|
|
|
|
; CHECK-LABEL: set_yes:
|
|
; CHECK: i32.call $push0=, memset@FUNCTION, $0, $1, $2{{$}}
|
|
; CHECK-NEXT: return $pop0{{$}}
|
|
define i8* @set_yes(i8* %dst, i8 %src, i32 %len) {
|
|
call void @llvm.memset.p0i8.i32(i8* %dst, i8 %src, i32 %len, i32 1, i1 false)
|
|
ret i8* %dst
|
|
}
|
|
|
|
; CHECK-LABEL: set_no:
|
|
; CHECK: i32.call $drop=, memset@FUNCTION, $0, $1, $2{{$}}
|
|
; CHECK-NEXT: return{{$}}
|
|
define void @set_no(i8* %dst, i8 %src, i32 %len) {
|
|
call void @llvm.memset.p0i8.i32(i8* %dst, i8 %src, i32 %len, i32 1, i1 false)
|
|
ret void
|
|
}
|
|
|
|
|
|
; CHECK-LABEL: frame_index:
|
|
; CHECK: i32.call $drop=, memset@FUNCTION, $pop{{[0-9]+}}, $pop{{[0-9]+}}, $pop{{[0-9]+}}{{$}}
|
|
; CHECK: i32.call $push{{[0-9]+}}=, memset@FUNCTION, ${{[0-9]+}}, $pop{{[0-9]+}}, $pop{{[0-9]+}}{{$}}
|
|
; 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
|
|
}
|
|
|
|
; If the result value of memset doesn't get stackified, it should be marked
|
|
; $drop. Note that we use a call to prevent tail dup so that we can test
|
|
; this specific functionality.
|
|
|
|
; CHECK-LABEL: drop_result:
|
|
; CHECK: i32.call $drop=, memset@FUNCTION, $0, $1, $2
|
|
declare i8* @def()
|
|
declare void @block_tail_dup()
|
|
define i8* @drop_result(i8* %arg, i8 %arg1, i32 %arg2, i32 %arg3, i32 %arg4) {
|
|
bb:
|
|
%tmp = icmp eq i32 %arg3, 0
|
|
br i1 %tmp, label %bb5, label %bb9
|
|
|
|
bb5:
|
|
%tmp6 = icmp eq i32 %arg4, 0
|
|
br i1 %tmp6, label %bb7, label %bb8
|
|
|
|
bb7:
|
|
call void @llvm.memset.p0i8.i32(i8* %arg, i8 %arg1, i32 %arg2, i32 1, i1 false)
|
|
br label %bb11
|
|
|
|
bb8:
|
|
br label %bb11
|
|
|
|
bb9:
|
|
%tmp10 = call i8* @def()
|
|
br label %bb11
|
|
|
|
bb11:
|
|
%tmp12 = phi i8* [ %arg, %bb7 ], [ %arg, %bb8 ], [ %tmp10, %bb9 ]
|
|
call void @block_tail_dup()
|
|
ret i8* %tmp12
|
|
}
|
|
|
|
; This is the same as drop_result, except we let tail dup happen, so the
|
|
; result of the memset *is* stackified.
|
|
|
|
; CHECK-LABEL: tail_dup_to_reuse_result:
|
|
; CHECK: i32.call $push{{[0-9]+}}=, memset@FUNCTION, $0, $1, $2
|
|
define i8* @tail_dup_to_reuse_result(i8* %arg, i8 %arg1, i32 %arg2, i32 %arg3, i32 %arg4) {
|
|
bb:
|
|
%tmp = icmp eq i32 %arg3, 0
|
|
br i1 %tmp, label %bb5, label %bb9
|
|
|
|
bb5:
|
|
%tmp6 = icmp eq i32 %arg4, 0
|
|
br i1 %tmp6, label %bb7, label %bb8
|
|
|
|
bb7:
|
|
call void @llvm.memset.p0i8.i32(i8* %arg, i8 %arg1, i32 %arg2, i32 1, i1 false)
|
|
br label %bb11
|
|
|
|
bb8:
|
|
br label %bb11
|
|
|
|
bb9:
|
|
%tmp10 = call i8* @def()
|
|
br label %bb11
|
|
|
|
bb11:
|
|
%tmp12 = phi i8* [ %arg, %bb7 ], [ %arg, %bb8 ], [ %tmp10, %bb9 ]
|
|
ret i8* %tmp12
|
|
}
|