llvm-6502/test/MC/Mips/set-at-directive-explicit-at.s
Toma Tabacu 94b64060af [mips] Improve support for the .set at/noat assembler directives.
Summary:
Made the following changes:
  Added calls to emitDirectiveSetNoAt() and emitDirectiveSetAt().
  Added special emit function for .set at=$reg, emitDirectiveSetAtWithArg(unsigned RegNo).
  Improved parsing error checks for .set at.
  Refactored parser code for .set at.
  Improved testing of both directives.
  Improved code readability and comments.

Reviewers: dsanders

Reviewed By: dsanders

Subscribers: llvm-commits

Differential Revision: http://reviews.llvm.org/D7176

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@229097 91177308-0d34-0410-b5e6-96231b3b80d8
2015-02-13 10:30:57 +00:00

53 lines
1.8 KiB
ArmAsm

# RUN: llvm-mc %s -triple=mipsel-unknown-linux -show-encoding -mcpu=mips32r2 \
# RUN: 2>%t1 | FileCheck %s
# RUN: FileCheck -check-prefix=WARNINGS %s < %t1
# Check that the assembler can handle the documented syntax
# for ".set at" and set the correct value. The correct value for $at is always
# $1 when written by the user.
.text
foo:
# CHECK: jr $1 # encoding: [0x08,0x00,0x20,0x00]
# WARNINGS: :[[@LINE+2]]:11: warning: used $at without ".set noat"
.set at=$1
jr $at
# CHECK: jr $1 # encoding: [0x08,0x00,0x20,0x00]
# WARNINGS: :[[@LINE+2]]:11: warning: used $at without ".set noat"
.set at=$1
jr $1
# CHECK: jr $1 # encoding: [0x08,0x00,0x20,0x00]
# WARNINGS: :[[@LINE+2]]:11: warning: used $at without ".set noat"
.set at=$at
jr $at
# CHECK: jr $1 # encoding: [0x08,0x00,0x20,0x00]
# WARNINGS: :[[@LINE+2]]:11: warning: used $at without ".set noat"
.set at=$at
jr $1
# WARNINGS-NOT: warning: used $at without ".set noat"
# CHECK: jr $1 # encoding: [0x08,0x00,0x20,0x00]
.set at=$2
jr $at
# CHECK: jr $1 # encoding: [0x08,0x00,0x20,0x00]
.set at=$3
jr $at
# CHECK: jr $1 # encoding: [0x08,0x00,0x20,0x00]
.set noat
jr $at
# CHECK: jr $1 # encoding: [0x08,0x00,0x20,0x00]
.set at=$0
jr $at
# CHECK: jr $16 # encoding: [0x08,0x00,0x00,0x02]
# WARNINGS: :[[@LINE+2]]:11: warning: used $16 with ".set at=$16"
.set at=$16
jr $s0
# CHECK: jr $16 # encoding: [0x08,0x00,0x00,0x02]
# WARNINGS: :[[@LINE+2]]:11: warning: used $16 with ".set at=$16"
.set at=$16
jr $16
# WARNINGS-NOT: warning