PPC: Combine duplicate (offset) lvsl Altivec intrinsics
The lvsl permutation control instruction is a function only of the alignment of
the pointer operand (relative to the 16-byte natural alignment of Altivec
vectors). As a result, multiple lvsl intrinsics where the operands differ by a
multiple of 16 can be combined.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@182708 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/CodeGen/PowerPC/unal-altivec.ll b/test/CodeGen/PowerPC/unal-altivec.ll
index f89f299..dec93eb 100644
--- a/test/CodeGen/PowerPC/unal-altivec.ll
+++ b/test/CodeGen/PowerPC/unal-altivec.ll
@@ -1,4 +1,5 @@
; RUN: llc < %s -mcpu=g5 | FileCheck %s
+; RUN: llc < %s -mcpu=g5 | FileCheck %s -check-prefix=CHECK-PC
target datalayout = "E-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-f128:128:128-v128:128:128-n32:64"
target triple = "powerpc64-unknown-linux-gnu"
@@ -38,6 +39,11 @@
; CHECK: vaddfp {{[0-9]+}}, [[R1]], [[CNST]]
; CHECK: blr
+; CHECK-PC: @foo
+; CHECK-PC: lvsl
+; CHECK-PC-NOT: lvsl
+; CHECK-PC: blr
+
for.end: ; preds = %vector.body
ret void
}