Add support for generating reg+reg preinc stores on PPC.

PPC will now generate STWUX and friends.

llvm-svn: 158698

1 files changed, 47 insertions, 0 deletions

diff --git a/llvm/test/CodeGen/PowerPC/stwux.ll b/llvm/test/CodeGen/PowerPC/stwux.ll
new file mode 100644
index 00000000000..737e9d9f0ec
--- /dev/null
+++ b/llvm/test/CodeGen/PowerPC/stwux.ll
@@ -0,0 +1,47 @@
+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-v128:128:128-n32:64"
+target triple = "powerpc64-unknown-linux-gnu"
+; RUN: llc < %s | FileCheck %s
+
+@multvec_i = external unnamed_addr global [100 x i32], align 4
+
+define fastcc void @subs_STMultiExceptIntern() nounwind {
+entry:
+  br i1 undef, label %while.body.lr.ph, label %return
+
+while.body.lr.ph:                                 ; preds = %entry
+  br label %while.body
+
+while.body:                                       ; preds = %if.end12, %while.body.lr.ph
+  %i.0240 = phi i32 [ -1, %while.body.lr.ph ], [ %i.1, %if.end12 ]
+  br i1 undef, label %if.end12, label %if.then
+
+if.then:                                          ; preds = %while.body
+  br label %if.end12
+
+if.end12:                                         ; preds = %if.then, %while.body
+  %i.1 = phi i32 [ %i.0240, %while.body ], [ undef, %if.then ]
+  br i1 undef, label %while.body, label %while.end
+
+while.end:                                        ; preds = %if.end12
+  br i1 undef, label %return, label %if.end15
+
+if.end15:                                         ; preds = %while.end
+  %idxprom.i.i230 = sext i32 %i.1 to i64
+  %arrayidx18 = getelementptr inbounds [100 x i32]* @multvec_i, i64 0, i64 %idxprom.i.i230
+  store i32 0, i32* %arrayidx18, align 4
+  br i1 undef, label %while.body21, label %while.end90
+
+while.body21:                                     ; preds = %if.end15
+  unreachable
+
+while.end90:                                      ; preds = %if.end15
+  store i32 0, i32* %arrayidx18, align 4
+  br label %return
+
+return:                                           ; preds = %while.end90, %while.end, %entry
+  ret void
+
+; CHECK: @subs_STMultiExceptIntern
+; CHECK: stwux
+}
+