[InstCombine] Propagate non-null facts to call parameters

[oota-llvm.git] / test / Transforms / InstCombine / not.ll

diff --git a/test/Transforms/InstCombine/not.ll b/test/Transforms/InstCombine/not.ll
index 82375bfaf2940d31116f5c45869e2c301c72bde3..9d59edd7934da07eb114b6f54a762887b034e351 100644 (file)
--- a/test/Transforms/InstCombine/not.ll
+++ b/test/Transforms/InstCombine/not.ll
@@ -1,16 +1,60 @@
 ; This test makes sure that these instructions are properly eliminated.
 ;
 
-; RUN: if as < %s | opt -instcombine -die | dis | grep xor
-; RUN: then exit 1
-; RUN: else exit 0
-; RUN: fi
+; RUN: opt < %s -instcombine -S | FileCheck %s
+; CHECK-NOT: xor
 
-implementation
+define i32 @test1(i32 %A) {
+        %B = xor i32 %A, -1             ; <i32> [#uses=1]
+        %C = xor i32 %B, -1             ; <i32> [#uses=1]
+        ret i32 %C
+}
+
+define i1 @test2(i32 %A, i32 %B) {
+        ; Can change into setge
+        %cond = icmp sle i32 %A, %B             ; <i1> [#uses=1]
+        %Ret = xor i1 %cond, true               ; <i1> [#uses=1]
+        ret i1 %Ret
+}
+
+; Test that demorgans law can be instcombined
+define i32 @test3(i32 %A, i32 %B) {
+        %a = xor i32 %A, -1             ; <i32> [#uses=1]
+        %b = xor i32 %B, -1             ; <i32> [#uses=1]
+        %c = and i32 %a, %b             ; <i32> [#uses=1]
+        %d = xor i32 %c, -1             ; <i32> [#uses=1]
+        ret i32 %d
+}
 
-int "test1"(int %A) {
-       %B = xor int %A
-       %C = xor int %B
-       ret int %C
+; Test that demorgens law can work with constants
+define i32 @test4(i32 %A, i32 %B) {
+        %a = xor i32 %A, -1             ; <i32> [#uses=1]
+        %c = and i32 %a, 5              ; <i32> [#uses=1]
+        %d = xor i32 %c, -1             ; <i32> [#uses=1]
+        ret i32 %d
 }
 
+; test the mirror of demorgans law...
+define i32 @test5(i32 %A, i32 %B) {
+        %a = xor i32 %A, -1             ; <i32> [#uses=1]
+        %b = xor i32 %B, -1             ; <i32> [#uses=1]
+        %c = or i32 %a, %b              ; <i32> [#uses=1]
+        %d = xor i32 %c, -1             ; <i32> [#uses=1]
+        ret i32 %d
+}
+
+; PR2298
+define zeroext i8 @test6(i32 %a, i32 %b)  nounwind  {
+entry:
+       %tmp1not = xor i32 %a, -1               ; <i32> [#uses=1]
+       %tmp2not = xor i32 %b, -1               ; <i32> [#uses=1]
+       %tmp3 = icmp slt i32 %tmp1not, %tmp2not         ; <i1> [#uses=1]
+       %retval67 = zext i1 %tmp3 to i8         ; <i8> [#uses=1]
+       ret i8 %retval67
+}
+
+define <2 x i1> @test7(<2 x i32> %A, <2 x i32> %B) {
+        %cond = icmp sle <2 x i32> %A, %B
+        %Ret = xor <2 x i1> %cond, <i1 true, i1 true>
+        ret <2 x i1> %Ret
+}