hanchenye-llvm-project/llvm/test/CodeGen/PowerPC/2008-03-18-RegScavengerAsse...

; RUN: llc < %s -march=ppc64 -enable-ppc64-regscavenger

define i16 @test(i8* %d1, i16* %d2) {
 %tmp237 = call i16 asm "lhbrx $0, $2, $1", "=r,r,bO,m"( i8* %d1, i32 0, i16* %d2 )
 ret i16 %tmp237
}
Eliminate more uses of llvm-as and llvm-dis. llvm-svn: 81293 2009-09-09 08:09:15 +08:00			`; RUN: llc < %s -march=ppc64 -enable-ppc64-regscavenger`
Fix live variables issues: 1. If part of a register is re-defined, an implicit kill and an implicit def are added to denote read / mod / write. However, this should only be necessary if the register is actually read later. This is a performance issue. 2. If a sub-register is being defined, and it doesn't have a previous use, do not add a implicit kill to the last use of a super-register: = EAX, AX<imp-use,kill> ... AX = In this case, EAX is live but AX is killed, this is wrong and will cause the coalescer to do bad things. llvm-svn: 48521 2008-03-19 08:52:20 +08:00
			`define i16 @test(i8* %d1, i16* %d2) {`
			`%tmp237 = call i16 asm "lhbrx $0, $2, $1", "=r,r,bO,m"( i8* %d1, i32 0, i16* %d2 )`
			`ret i16 %tmp237`
			`}`