Add a test for the foldSelectICmpAndOr fix committed in r180779.

[oota-llvm.git] / test / Transforms / InstCombine / shift-sra.ll

diff --git a/test/Transforms/InstCombine/shift-sra.ll b/test/Transforms/InstCombine/shift-sra.ll
index 492c16ac5875afd063f01c474e97f1ac46fa8e1d..a578bbe4d4fc2d4990c9de868468ef6b460df3a9 100644 (file)
--- a/test/Transforms/InstCombine/shift-sra.ll
+++ b/test/Transforms/InstCombine/shift-sra.ll
@@ -37,3 +37,42 @@ C:
 ; CHECK: %P = phi i64
 ; CHECK-NEXT: ret i64 %P
 }
+
+define i64 @test4(i1 %X, i64 %Y, i1 %Cond) {
+  br i1 %Cond, label %T, label %F
+T:
+  %X2 = sext i1 %X to i64
+  br label %C
+F:
+  %Y2 = ashr i64 %Y, 63
+  br label %C
+C:
+  %P = phi i64 [%X2, %T], [%Y2, %F] 
+  %R = shl i64 %P, 12
+  %S = ashr i64 %R, 12
+  ret i64 %S
+  
+; CHECK: @test4
+; CHECK: %P = phi i64
+; CHECK-NEXT: ret i64 %P
+}
+
+; rdar://7732987
+define i32 @test5(i32 %Y) {
+  br i1 undef, label %A, label %C
+A:
+  br i1 undef, label %B, label %D
+B:
+  br label %D
+C:
+  br i1 undef, label %D, label %E
+D:
+  %P = phi i32 [0, %A], [0, %B], [%Y, %C] 
+  %S = ashr i32 %P, 16
+  ret i32 %S
+; CHECK: @test5
+; CHECK: %P = phi i32
+; CHECK-NEXT: ashr i32 %P, 16
+E:
+  ret i32 0
+}