mirror of
https://github.com/RPCS3/llvm.git
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a26aa42625
Summary: Made it convert from register to stack based instructions, and removed the registers. Fixes to related code that was expecting register based instructions. Added the correct testing flag to all tests, depending on what the format they were expecting so far. Translated one test to stack format as example: reg-stackify-stack.ll tested: llvm-lit -v `find test -name WebAssembly` unittests/MC/* Reviewers: dschuff, sunfish Subscribers: sbc100, jgravelle-google, eraman, aheejin, llvm-commits, jfb Differential Revision: https://reviews.llvm.org/D51241 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@340750 91177308-0d34-0410-b5e6-96231b3b80d8
171 lines
4.8 KiB
LLVM
171 lines
4.8 KiB
LLVM
; RUN: llc < %s -asm-verbose=false -disable-wasm-fallthrough-return-opt -wasm-disable-explicit-locals -wasm-keep-registers -verify-machineinstrs | FileCheck %s
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; Test varargs constructs.
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target datalayout = "e-m:e-p:32:32-i64:64-n32:64-S128"
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target triple = "wasm32-unknown-unknown"
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; Test va_start.
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; TODO: Test va_start.
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; CHECK-LABEL: start:
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; CHECK-NEXT: .param i32, i32
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; CHECK-NOT: __stack_pointer
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define void @start(i8** %ap, ...) {
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entry:
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%0 = bitcast i8** %ap to i8*
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; Store the second argument (the hidden vararg buffer pointer) into ap
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; CHECK: i32.store 0($0), $1
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call void @llvm.va_start(i8* %0)
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ret void
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}
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; Test va_end.
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; CHECK-LABEL: end:
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; CHECK-NEXT: .param i32{{$}}
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; CHECK-NEXT: return{{$}}
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define void @end(i8** %ap) {
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entry:
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%0 = bitcast i8** %ap to i8*
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call void @llvm.va_end(i8* %0)
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ret void
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}
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; Test va_copy.
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; CHECK-LABEL: copy:
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; CHECK-NEXT: .param i32, i32{{$}}
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; CHECK-NEXT: i32.load $push0=, 0($1){{$}}
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; CHECK-NEXT: i32.store 0($0), $pop0{{$}}
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; CHECK-NEXT: return{{$}}
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define void @copy(i8** %ap, i8** %bp) {
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entry:
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%0 = bitcast i8** %ap to i8*
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%1 = bitcast i8** %bp to i8*
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call void @llvm.va_copy(i8* %0, i8* %1)
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ret void
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}
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; Test va_arg with an i8 argument.
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; CHECK-LABEL: arg_i8:
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; CHECK-NEXT: .param i32{{$}}
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; CHECK-NEXT: .result i32{{$}}
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; CHECK-NEXT: i32.load $push[[NUM0:[0-9]+]]=, 0($0){{$}}
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; CHECK-NEXT: tee_local $push[[NUM1:[0-9]+]]=, $1=, $pop[[NUM0]]{{$}}
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; CHECK-NEXT: i32.const $push[[NUM2:[0-9]+]]=, 4{{$}}
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; CHECK-NEXT: i32.add $push[[NUM3:[0-9]+]]=, $pop[[NUM1]], $pop[[NUM2]]{{$}}
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; CHECK-NEXT: i32.store 0($0), $pop[[NUM3]]{{$}}
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; CHECK-NEXT: i32.load $push[[NUM4:[0-9]+]]=, 0($1){{$}}
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; CHECK-NEXT: return $pop[[NUM4]]{{$}}
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define i8 @arg_i8(i8** %ap) {
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entry:
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%t = va_arg i8** %ap, i8
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ret i8 %t
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}
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; Test va_arg with an i32 argument.
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; CHECK-LABEL: arg_i32:
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; CHECK-NEXT: .param i32{{$}}
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; CHECK-NEXT: .result i32{{$}}
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; CHECK-NEXT: i32.load $push[[NUM0:[0-9]+]]=, 0($0){{$}}
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; CHECK-NEXT: i32.const $push[[NUM1:[0-9]+]]=, 3{{$}}
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; CHECK-NEXT: i32.add $push[[NUM2:[0-9]+]]=, $pop[[NUM0]], $pop[[NUM1]]{{$}}
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; CHECK-NEXT: i32.const $push[[NUM3:[0-9]+]]=, -4{{$}}
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; CHECK-NEXT: i32.and $push[[NUM4:[0-9]+]]=, $pop[[NUM2]], $pop[[NUM3]]{{$}}
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; CHECK-NEXT: tee_local $push[[NUM5:[0-9]+]]=, $1=, $pop[[NUM4]]{{$}}
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; CHECK-NEXT: i32.const $push[[NUM6:[0-9]+]]=, 4{{$}}
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; CHECK-NEXT: i32.add $push[[NUM7:[0-9]+]]=, $pop[[NUM5]], $pop[[NUM6]]{{$}}
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; CHECK-NEXT: i32.store 0($0), $pop[[NUM7]]{{$}}
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; CHECK-NEXT: i32.load $push[[NUM8:[0-9]+]]=, 0($1){{$}}
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; CHECK-NEXT: return $pop[[NUM8]]{{$}}
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define i32 @arg_i32(i8** %ap) {
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entry:
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%t = va_arg i8** %ap, i32
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ret i32 %t
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}
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; Test va_arg with an i128 argument.
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; CHECK-LABEL: arg_i128:
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; CHECK-NEXT: .param i32, i32{{$}}
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; CHECK: i32.and
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; CHECK: i64.load
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; CHECK: i64.load
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; CHECK: return{{$}}
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define i128 @arg_i128(i8** %ap) {
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entry:
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%t = va_arg i8** %ap, i128
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ret i128 %t
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}
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; Test a varargs call with no actual arguments.
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declare void @callee(...)
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; CHECK-LABEL: caller_none:
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; CHECK-NEXT: i32.const $push0=, 0
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; CHECK-NEXT: call callee@FUNCTION, $pop0
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; CHECK-NEXT: return{{$}}
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define void @caller_none() {
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call void (...) @callee()
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ret void
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}
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; Test a varargs call with some actual arguments.
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; Note that the store of 2.0 is converted to an i64 store; this optimization
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; is not needed on WebAssembly, but there isn't currently a convenient hook for
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; disabling it.
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; CHECK-LABEL: caller_some
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; CHECK-DAG: i32.store
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; CHECK-DAG: i64.store
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define void @caller_some() {
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call void (...) @callee(i32 0, double 2.0)
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ret void
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}
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; Test a va_start call in a non-entry block
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; CHECK-LABEL: startbb:
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; CHECK: .param i32, i32, i32
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define void @startbb(i1 %cond, i8** %ap, ...) {
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entry:
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br i1 %cond, label %bb0, label %bb1
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bb0:
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ret void
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bb1:
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%0 = bitcast i8** %ap to i8*
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; Store the second argument (the hidden vararg buffer pointer) into ap
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; CHECK: i32.store 0($1), $2
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call void @llvm.va_start(i8* %0)
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ret void
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}
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; Test a call to a varargs function with a non-legal fixed argument.
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declare void @callee_with_nonlegal_fixed(fp128, ...) nounwind
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; CHECK-LABEL: call_nonlegal_fixed:
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; CHECK: i64.const $push[[L0:[0-9]+]]=, 0
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; CHECK: i64.const $push[[L1:[0-9]+]]=, 0
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; CHECK: i32.const $push[[L2:[0-9]+]]=, 0
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; CHECK: call callee_with_nonlegal_fixed@FUNCTION, $pop[[L0]], $pop[[L1]], $pop[[L2]]{{$}}
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define void @call_nonlegal_fixed() nounwind {
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call void (fp128, ...) @callee_with_nonlegal_fixed(fp128 0xL00000000000000000000000000000000)
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ret void
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}
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; Test a definition a varargs function with a non-legal fixed argument.
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; CHECK-LABEL: nonlegal_fixed:
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; CHECK-NEXT: .param i64, i64, i32{{$}}
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define void @nonlegal_fixed(fp128 %x, ...) nounwind {
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ret void
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}
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declare void @llvm.va_start(i8*)
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declare void @llvm.va_end(i8*)
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declare void @llvm.va_copy(i8*, i8*)
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