6502/llvm-6502
1
0
Fork 0
mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2024-12-14 11:32:34 +00:00
Code Issues Projects Releases Wiki Activity

AArch64: don't try to handle [SU]MUL_LOHI nodes

Browse Source 
We should set them to expand for now since there are no patterns
dealing with them. Actually, there are no instructions either so I
doubt they'll ever be acceptable.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@199265 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Tim Northover 2014-01-14 22:53:22 +00:00
parent 808054f81f
commit 4e1247b836
2 changed files with 17 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
lib/Target/AArch64/AArch64ISelLowering.cpp
View File

@ -151,6 +151,11 @@ AArch64TargetLowering::AArch64TargetLowering(AArch64TargetMachine &TM)
setOperationAction(ISD::SDIVREM, MVT::i32, Expand);
setOperationAction(ISD::SDIVREM, MVT::i64, Expand);
setOperationAction(ISD::SMUL_LOHI, MVT::i32, Expand);
setOperationAction(ISD::SMUL_LOHI, MVT::i64, Expand);
setOperationAction(ISD::UMUL_LOHI, MVT::i32, Expand);
setOperationAction(ISD::UMUL_LOHI, MVT::i64, Expand);
setOperationAction(ISD::CTPOP, MVT::i32, Expand);
setOperationAction(ISD::CTPOP, MVT::i64, Expand);

12
test/CodeGen/AArch64/mul-lohi.ll Normal file
View File

@ -0,0 +1,12 @@
; RUN: llc -mtriple=aarch64-linux-gnu %s -o - | FileCheck %s
define i128 @test_128bitmul(i128 %lhs, i128 %rhs) {
; CHECK: test_128bitmul:
; CHECK-DAG: umulh [[CARRY:x[0-9]+]], x0, x2
; CHECK-DAG: madd [[PART1:x[0-9]+]], x0, x3, [[CARRY]]
; CHECK: madd x1, x1, x2, [[PART1]]
; CHECK: mul x0, x0, x2
%prod = mul i128 %lhs, %rhs
ret i128 %prod
}