[llvm] r271856 - Add test case for InstCombiner::commonIRemTransforms; NFC

[Sanjoy Das via llvm-commits]

Author: sanjoy
Date: Sun Jun  5 16:17:00 2016
New Revision: 271856

URL: http://llvm.org/viewvc/llvm-project?rev=271856&view=rev
Log:
Add test case for InstCombiner::commonIRemTransforms; NFC

The PHI case in commonIRemTransforms was untested; add a trivial test
case.

Modified:
    llvm/trunk/test/Transforms/InstCombine/rem.ll

Modified: llvm/trunk/test/Transforms/InstCombine/rem.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/Transforms/InstCombine/rem.ll?rev=271856&r1=271855&r2=271856&view=diff
==============================================================================
--- llvm/trunk/test/Transforms/InstCombine/rem.ll (original)
+++ llvm/trunk/test/Transforms/InstCombine/rem.ll Sun Jun  5 16:17:00 2016
@@ -231,3 +231,26 @@ define <2 x i64> @test20(<2 x i64> %X, <
 	%R = urem <2 x i64> %V, <i64 2, i64 3>
 	ret <2 x i64> %R
 }
+
+define i32 @test21(i1 %c0, i32* %val) {
+; CHECK-LABEL: @test21(
+entry:
+  br i1 %c0, label %if.then, label %if.end
+
+if.then:
+; CHECK: if.then:
+; CHECK-NEXT:  %v = load volatile i32, i32* %val, align 4
+; CHECK-NEXT:  %phitmp = srem i32 %v, 5
+
+  %v = load volatile i32, i32* %val
+  br label %if.end
+
+if.end:
+; CHECK: if.end:
+; CHECK-NEXT:  %lhs = phi i32 [ %phitmp, %if.then ], [ 0, %entry ]
+; CHECK-NEXT:  ret i32 %lhs
+
+  %lhs = phi i32 [ %v, %if.then ], [ 5, %entry ]
+  %rem = srem i32 %lhs, 5
+  ret i32 %rem
+}