[llvm-commits] [llvm] r119857 - /llvm/trunk/test/Transforms/CodeGenPrepare/phi.ll

[Owen Anderson]

Author: resistor
Date: Fri Nov 19 16:34:53 2010
New Revision: 119857

URL: http://llvm.org/viewvc/llvm-project?rev=119857&view=rev
Log:
Add a test for CodeGenPrepare's ability to look through PHI nodes when performing
addressing mode folding, introduced in r119853.

Added:
    llvm/trunk/test/Transforms/CodeGenPrepare/phi.ll

Added: llvm/trunk/test/Transforms/CodeGenPrepare/phi.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/Transforms/CodeGenPrepare/phi.ll?rev=119857&view=auto
==============================================================================
--- llvm/trunk/test/Transforms/CodeGenPrepare/phi.ll (added)
+++ llvm/trunk/test/Transforms/CodeGenPrepare/phi.ll Fri Nov 19 16:34:53 2010
@@ -0,0 +1,23 @@
+; RUN: llc -march=arm < %s | FileCheck %s
+; <rdar://problem/8686347>
+
+define i32 @test1(i1 %a, i32* %b) {
+; CHECK: test1
+entry:
+  br i1 %a, label %lblock, label %rblock
+
+lblock:
+  %lbranch = getelementptr i32* %b, i32 1
+  br label %end
+
+rblock:
+  %rbranch = getelementptr i32* %b, i32 1
+  br label %end
+  
+end:
+; CHECK: ldr	r0, [r1, #4]
+  %gep = phi i32* [%lbranch, %lblock], [%rbranch, %rblock]
+  %r = load i32* %gep
+; CHECK-NEXT: bx	lr
+  ret i32 %r
+}
\ No newline at end of file