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https://github.com/RPCS3/llvm.git
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4c8fe28374
Reinteroduce the code for moving ARGUMENTS back to the top of the basic block. While the ARGUMENTS physical register prevents sinking and scheduling from moving them, it does not appear to be sufficient to prevent SelectionDAG from moving them down in the initial schedule. This patch introduces a patch that moves them back to the top immediately after SelectionDAG runs. This is still hopefully a temporary solution. http://reviews.llvm.org/D14750 is one alternative, though the review has not been favorable, and proposed alternatives are longer-term and have other downsides. This fixes the main outstanding -verify-machineinstrs failures, so it adds -verify-machineinstrs to several tests. Differential Revision: http://reviews.llvm.org/D15377 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@255125 91177308-0d34-0410-b5e6-96231b3b80d8
123 lines
2.8 KiB
LLVM
123 lines
2.8 KiB
LLVM
; RUN: llc < %s -asm-verbose=false -verify-machineinstrs | FileCheck %s
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; Test varargs constructs.
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target datalayout = "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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;define void @start(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_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 $discard=, 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{{$}}
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; CHECK-NEXT: .local i32{{$}}
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; CHECK-NEXT: i32.load $1=, 0($0){{$}}
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; CHECK-NEXT: i32.const $push0=, 4{{$}}
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; CHECK-NEXT: i32.add $push1=, $1, $pop0{{$}}
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; CHECK-NEXT: i32.store $discard=, 0($0), $pop1{{$}}
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; CHECK-NEXT: i32.load $push2=, 0($1){{$}}
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; CHECK-NEXT: return $pop2{{$}}
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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: .local i32{{$}}
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; CHECK-NEXT: i32.load $push0=, 0($0){{$}}
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; CHECK-NEXT: i32.const $push1=, 3{{$}}
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; CHECK-NEXT: i32.add $push2=, $pop0, $pop1{{$}}
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; CHECK-NEXT: i32.const $push3=, -4{{$}}
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; CHECK-NEXT: i32.and $1=, $pop2, $pop3{{$}}
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; CHECK-NEXT: i32.const $push4=, 4{{$}}
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; CHECK-NEXT: i32.add $push5=, $1, $pop4{{$}}
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; CHECK-NEXT: i32.store $discard=, 0($0), $pop5{{$}}
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; CHECK-NEXT: i32.load $push6=, 0($1){{$}}
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; CHECK-NEXT: return $pop6{{$}}
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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{{$}}
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; CHECK-NEXT: .local
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; CHECK: i32.and
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; CHECK: i64.load
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; CHECK: i64.load
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; CHECK: return{{$}}
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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: call callee{{$}}
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; CHECK-NEXT: return{{$}}
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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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; TODO: Test a varargs call with actual arguments.
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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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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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