llvm/ssat-lower.ll at f241349619abe3dd3bd3376c8a3268f332cb4765 - llvm - Gitea: Git with a cup of tea

RPCSX/llvm

mirror of https://github.com/RPCSX/llvm.git synced 2025-02-10 22:43:46 +00:00

Asiri Rathnayake 52578b0850 Fix mapping of @llvm.arm.ssat/usat intrinsics to ssat/usat instructions

The mapping of these two intrinsics in ARMInstrInfo.td had a small
omission which lead to their operands not being validated/transformed
before being lowered into usat and ssat instructions. This can cause
incorrect instructions to be emitted.

I've also added tests for the remaining two saturating arithmatic
intrinsics @llvm.arm.qadd and @llvm.arm.qsub as they are missing
codegen tests.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@250697 91177308-0d34-0410-b5e6-96231b3b80d8

2015-10-19 11:44:24 +00:00

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 ; RUN: not llc < %s -O1 -mtriple=armv6-none-none-eabi 2>&1 | FileCheck %s
 ; immediate argument < lower-bound
 ; CHECK: LLVM ERROR: Cannot select: intrinsic %llvm.arm.ssat
 define i32 @ssat1() nounwind {
   %tmp = call i32 @llvm.arm.ssat(i32 128, i32 0)
   ret i32 %tmp
 }
 declare i32 @llvm.arm.ssat(i32, i32) nounwind readnone