6502/llvm-6502
1
0
Fork 0
mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2025-08-05 13:26:55 +00:00
Code Issues Projects Releases Wiki Activity

Evan implemented these.

Browse Source 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47828 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner
2008-03-02 18:05:14 +00:00
parent 3be4893dce
commit 767486b1d5
3 changed files with 34 additions and 53 deletions
Download Patch File Download Diff File Expand all files Collapse all files

34
test/CodeGen/X86/coalescer-commute2.ll Normal file
View File

@@ -0,0 +1,34 @@
; RUN: llvm-as < %s | llc -march=x86-64 | grep paddw | count 2
; RUN: llvm-as < %s | llc -march=x86-64 | not grep mov
; The 2-addr pass should ensure that identical code is produced for these functions
; no extra copy should be generated.
define <2 x i64> @test1(<2 x i64> %x, <2 x i64> %y) nounwind {
entry:
%tmp6 = bitcast <2 x i64> %y to <8 x i16> ; <<8 x i16>> [#uses=1]
%tmp8 = bitcast <2 x i64> %x to <8 x i16> ; <<8 x i16>> [#uses=1]
%tmp9 = add <8 x i16> %tmp8, %tmp6 ; <<8 x i16>> [#uses=1]
%tmp10 = bitcast <8 x i16> %tmp9 to <2 x i64> ; <<2 x i64>> [#uses=1]
ret <2 x i64> %tmp10
}
define <2 x i64> @test2(<2 x i64> %x, <2 x i64> %y) nounwind {
entry:
%tmp6 = bitcast <2 x i64> %x to <8 x i16> ; <<8 x i16>> [#uses=1]
%tmp8 = bitcast <2 x i64> %y to <8 x i16> ; <<8 x i16>> [#uses=1]
%tmp9 = add <8 x i16> %tmp8, %tmp6 ; <<8 x i16>> [#uses=1]
%tmp10 = bitcast <8 x i16> %tmp9 to <2 x i64> ; <<2 x i64>> [#uses=1]
ret <2 x i64> %tmp10
}
; The coalescer should commute the add to avoid a copy.
define <4 x float> @test3(<4 x float> %V) {
entry:
%tmp8 = shufflevector <4 x float> %V, <4 x float> undef,
<4 x i32> < i32 3, i32 2, i32 1, i32 0 >
%add = add <4 x float> %tmp8, %V
ret <4 x float> %add
}