| ; RUN: llc < %s -asm-verbose=false -disable-wasm-fallthrough-return-opt -wasm-disable-explicit-locals -wasm-keep-registers -verify-machineinstrs | FileCheck %s --check-prefix=CHECK --check-prefix=EMSCRIPTEN |
| ; RUN: llc < %s -mtriple wasm32-unknown-unknown -asm-verbose=false -disable-wasm-fallthrough-return-opt -wasm-disable-explicit-locals -wasm-keep-registers -verify-machineinstrs | FileCheck %s --check-prefix=CHECK --check-prefix=UNKNOWN |
| |
| ; Test varargs constructs. |
| |
| target triple = "wasm32-unknown-emscripten" |
| |
| ; Test va_start. |
| |
| ; TODO: Test va_start. |
| ; CHECK-LABEL: start: |
| ; CHECK-NEXT: .functype start (i32, i32) -> () |
| ; CHECK-NOT: __stack_pointer |
| define void @start(ptr %ap, ...) { |
| entry: |
| ; Store the second argument (the hidden vararg buffer pointer) into ap |
| ; CHECK: i32.store 0($0), $1 |
| call void @llvm.va_start(ptr %ap) |
| ret void |
| } |
| |
| ; Test va_end. |
| |
| ; CHECK-LABEL: end: |
| ; CHECK-NEXT: .functype end (i32) -> (){{$}} |
| ; CHECK-NEXT: return{{$}} |
| define void @end(ptr %ap) { |
| entry: |
| call void @llvm.va_end(ptr %ap) |
| ret void |
| } |
| |
| ; Test va_copy. |
| |
| ; CHECK-LABEL: copy: |
| ; CHECK-NEXT: .functype copy (i32, i32) -> (){{$}} |
| ; CHECK-NEXT: i32.load $push0=, 0($1){{$}} |
| ; CHECK-NEXT: i32.store 0($0), $pop0{{$}} |
| ; CHECK-NEXT: return{{$}} |
| define void @copy(ptr %ap, ptr %bp) { |
| entry: |
| call void @llvm.va_copy(ptr %ap, ptr %bp) |
| ret void |
| } |
| |
| ; Test va_arg with an i8 argument. |
| |
| ; CHECK-LABEL: arg_i8: |
| ; CHECK-NEXT: .functype arg_i8 (i32) -> (i32){{$}} |
| ; CHECK-NEXT: i32.load $push[[NUM0:[0-9]+]]=, 0($0){{$}} |
| ; CHECK-NEXT: local.tee $push[[NUM1:[0-9]+]]=, $1=, $pop[[NUM0]]{{$}} |
| ; CHECK-NEXT: i32.const $push[[NUM2:[0-9]+]]=, 4{{$}} |
| ; CHECK-NEXT: i32.add $push[[NUM3:[0-9]+]]=, $pop[[NUM1]], $pop[[NUM2]]{{$}} |
| ; CHECK-NEXT: i32.store 0($0), $pop[[NUM3]]{{$}} |
| ; CHECK-NEXT: i32.load $push[[NUM4:[0-9]+]]=, 0($1){{$}} |
| ; CHECK-NEXT: return $pop[[NUM4]]{{$}} |
| define i8 @arg_i8(ptr %ap) { |
| entry: |
| %t = va_arg ptr %ap, i8 |
| ret i8 %t |
| } |
| |
| ; Test va_arg with an i32 argument. |
| |
| ; CHECK-LABEL: arg_i32: |
| ; CHECK-NEXT: .functype arg_i32 (i32) -> (i32){{$}} |
| ; CHECK-NEXT: i32.load $push[[NUM0:[0-9]+]]=, 0($0){{$}} |
| ; CHECK-NEXT: i32.const $push[[NUM1:[0-9]+]]=, 3{{$}} |
| ; CHECK-NEXT: i32.add $push[[NUM2:[0-9]+]]=, $pop[[NUM0]], $pop[[NUM1]]{{$}} |
| ; CHECK-NEXT: i32.const $push[[NUM3:[0-9]+]]=, -4{{$}} |
| ; CHECK-NEXT: i32.and $push[[NUM4:[0-9]+]]=, $pop[[NUM2]], $pop[[NUM3]]{{$}} |
| ; CHECK-NEXT: local.tee $push[[NUM5:[0-9]+]]=, $1=, $pop[[NUM4]]{{$}} |
| ; CHECK-NEXT: i32.const $push[[NUM6:[0-9]+]]=, 4{{$}} |
| ; CHECK-NEXT: i32.add $push[[NUM7:[0-9]+]]=, $pop[[NUM5]], $pop[[NUM6]]{{$}} |
| ; CHECK-NEXT: i32.store 0($0), $pop[[NUM7]]{{$}} |
| ; CHECK-NEXT: i32.load $push[[NUM8:[0-9]+]]=, 0($1){{$}} |
| ; CHECK-NEXT: return $pop[[NUM8]]{{$}} |
| define i32 @arg_i32(ptr %ap) { |
| entry: |
| %t = va_arg ptr %ap, i32 |
| ret i32 %t |
| } |
| |
| ; Test va_arg with an i128 argument. |
| |
| ; CHECK-LABEL: arg_i128: |
| ; CHECK-NEXT: .functype arg_i128 (i32, i32) -> (){{$}} |
| ; CHECK: i32.and |
| ; CHECK: i64.load |
| ; CHECK: i64.load |
| ; CHECK: return{{$}} |
| define i128 @arg_i128(ptr %ap) { |
| entry: |
| %t = va_arg ptr %ap, i128 |
| ret i128 %t |
| } |
| |
| ; Test a varargs call with no actual arguments. |
| |
| declare void @callee(...) |
| |
| ; CHECK-LABEL: caller_none: |
| ; CHECK: i32.const $push0=, 0 |
| ; CHECK-NEXT: call callee, $pop0 |
| ; CHECK-NEXT: return{{$}} |
| define void @caller_none() { |
| call void (...) @callee() |
| ret void |
| } |
| |
| ; Test a varargs call with some actual arguments. |
| ; Note that the store of 2.0 is converted to an i64 store; this optimization |
| ; is not needed on WebAssembly, but there isn't currently a convenient hook for |
| ; disabling it. |
| |
| ; CHECK-LABEL: caller_some |
| ; CHECK-DAG: i32.store |
| ; CHECK-DAG: i64.store |
| define void @caller_some() { |
| call void (...) @callee(i32 0, double 2.0) |
| ret void |
| } |
| |
| ; Test a va_start call in a non-entry block |
| ; CHECK-LABEL: startbb: |
| ; CHECK: .functype startbb (i32, i32, i32) -> () |
| define void @startbb(i1 %cond, ptr %ap, ...) { |
| entry: |
| br i1 %cond, label %bb0, label %bb1 |
| bb0: |
| ret void |
| bb1: |
| ; Store the second argument (the hidden vararg buffer pointer) into ap |
| ; CHECK: i32.store 0($1), $2 |
| call void @llvm.va_start(ptr %ap) |
| ret void |
| } |
| |
| ; Test a call to a varargs function with a non-legal fixed argument. |
| |
| declare void @callee_with_nonlegal_fixed(fp128, ...) nounwind |
| |
| ; CHECK-LABEL: call_nonlegal_fixed: |
| ; CHECK: i64.const $push[[L0:[0-9]+]]=, 0 |
| ; CHECK: i64.const $push[[L1:[0-9]+]]=, 0 |
| ; CHECK: i32.const $push[[L2:[0-9]+]]=, 0 |
| ; CHECK: call callee_with_nonlegal_fixed, $pop[[L0]], $pop[[L1]], $pop[[L2]]{{$}} |
| define void @call_nonlegal_fixed() nounwind { |
| call void (fp128, ...) @callee_with_nonlegal_fixed(fp128 0xL00000000000000000000000000000000) |
| ret void |
| } |
| |
| ; Test a definition a varargs function with a non-legal fixed argument. |
| |
| ; CHECK-LABEL: nonlegal_fixed: |
| ; CHECK-NEXT: .functype nonlegal_fixed (i64, i64, i32) -> (){{$}} |
| define void @nonlegal_fixed(fp128 %x, ...) nounwind { |
| ret void |
| } |
| |
| ; Test that an fp128 argument is properly aligned and allocated |
| ; within a vararg buffer. |
| |
| ; EMSCRIPTEN-LABEL: call_fp128_alignment: |
| ; EMSCRIPTEN: global.get $push5=, __stack_pointer |
| ; EMSCRIPTEN-NEXT: i32.const $push6=, 32 |
| ; EMSCRIPTEN-NEXT: i32.sub $push10=, $pop5, $pop6 |
| ; EMSCRIPTEN-NEXT: local.tee $push9=, $1=, $pop10 |
| ; EMSCRIPTEN-NEXT: global.set __stack_pointer, $pop9 |
| ; EMSCRIPTEN-NEXT: i32.const $push0=, 16 |
| ; EMSCRIPTEN-NEXT: i32.add $push1=, $1, $pop0 |
| ; EMSCRIPTEN-NEXT: i64.const $push2=, -9223372036854775808 |
| ; EMSCRIPTEN-NEXT: i64.store 0($pop1), $pop2 |
| ; EMSCRIPTEN-NEXT: i64.const $push3=, 1 |
| ; EMSCRIPTEN-NEXT: i64.store 8($1), $pop3 |
| ; EMSCRIPTEN-NEXT: i32.const $push4=, 7 |
| ; EMSCRIPTEN-NEXT: i32.store 0($1), $pop4 |
| ; EMSCRIPTEN-NEXT: call callee, $1 |
| |
| ; Alignment of fp128 is a current disagreement between emscripten and others. |
| ; UNKNOWN-LABEL: call_fp128_alignment: |
| ; UNKNOWN: global.get $push7=, __stack_pointer |
| ; UNKNOWN-NEXT: i32.const $push8=, 32 |
| ; UNKNOWN-NEXT: i32.sub $push12=, $pop7, $pop8 |
| ; UNKNOWN-NEXT: local.tee $push11=, $1=, $pop12 |
| ; UNKNOWN-NEXT: global.set __stack_pointer, $pop11 |
| ; UNKNOWN-NEXT: i32.const $push0=, 24 |
| ; UNKNOWN-NEXT: i32.add $push1=, $1, $pop0 |
| ; UNKNOWN-NEXT: i64.const $push2=, -9223372036854775808 |
| ; UNKNOWN-NEXT: i64.store 0($pop1), $pop2 |
| ; UNKNOWN-NEXT: i32.const $push3=, 16 |
| ; UNKNOWN-NEXT: i32.add $push4=, $1, $pop3 |
| ; UNKNOWN-NEXT: i64.const $push5=, 1 |
| ; UNKNOWN-NEXT: i64.store 0($pop4), $pop5 |
| ; UNKNOWN-NEXT: i32.const $push6=, 7 |
| ; UNKNOWN-NEXT: i32.store 0($1), $pop6 |
| ; UNKNOWN-NEXT: call callee, $1 |
| define void @call_fp128_alignment(ptr %p) { |
| entry: |
| call void (...) @callee(i8 7, fp128 0xL00000000000000018000000000000000) |
| ret void |
| } |
| |
| declare void @llvm.va_start(ptr) |
| declare void @llvm.va_end(ptr) |
| declare void @llvm.va_copy(ptr, ptr) |