llvm/storerd-io-over-rr.ll at 14ae1425001aa5c03ae22f43df78aa2ce6f57aad - llvm - Gitea: Git with a cup of tea

RPCSX/llvm

mirror of https://github.com/RPCSX/llvm.git synced 2025-01-07 12:30:44 +00:00

Krzysztof Parzyszek 1b1291fbbb [Hexagon] Prefer _io over _rr for 64-bit store with constant offset

Identify patterns where the address is aligned to an 8-byte boundary,
but both the base address and the constant offset are both proper
multiples of 4. In such cases, extract Base+4 into a separate instruc-
tion, and use S2_storerd_io, instead of using S4_storerd_rr.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@277497 91177308-0d34-0410-b5e6-96231b3b80d8

2016-08-02 18:50:05 +00:00

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 ; RUN: llc -march=hexagon < %s | FileCheck %s
 ; Check for memd(base + #offset), instead of memd(base + reg<<#c).
 ; CHECK: memd(r{{[0-9]+}}+#
 define void @fred(i32 %p, i64 %v) #0 {
   %t0 = add i32 %p, 4
   %t1 = inttoptr i32 %t0 to i64*
   store i64 %v, i64* %t1
   ret void
 }
 attributes #0 = { nounwind "target-cpu"="hexagonv60" }