-; RUN: opt %s -instcombine -S | \
-; RUN: grep {lshr i32} | count 2
-; RUN: opt %s -instcombine -S | not grep ashr
+; RUN: opt < %s -instcombine -S | FileCheck %s
define i32 @test1(i32 %X, i8 %A) {
%Y = ashr i32 %X, %shift.upgrd.1 ; <i32> [#uses=1]
%Z = and i32 %Y, 1 ; <i32> [#uses=1]
ret i32 %Z
+; CHECK: @test1
+; CHECK: lshr i32 %X, %shift.upgrd.1
}
define i32 @test2(i8 %tmp) {
%tmp4 = add i32 %tmp3, 7 ; <i32> [#uses=1]
%tmp5 = ashr i32 %tmp4, 3 ; <i32> [#uses=1]
ret i32 %tmp5
+; CHECK: @test2
+; CHECK: lshr i32 %tmp4, 3
+}
+
+define i64 @test3(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]
+ %S = ashr i64 %P, 12
+ ret i64 %S
+
+; CHECK: @test3
+; 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
}