[SimplifyLibCalls] Turn memchr(const, C, const) into a bitfield check.

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

diff --git a/test/Transforms/InstCombine/signext.ll b/test/Transforms/InstCombine/signext.ll
index 7dcb466ad6416db724a187aeb5531277db35c61a..3a714d7046d31363ac718e92f0f256972296144a 100644 (file)
--- a/test/Transforms/InstCombine/signext.ll
+++ b/test/Transforms/InstCombine/signext.ll
@@ -1,43 +1,78 @@
-; RUN: llvm-upgrade < %s | llvm-as | opt -instcombine -disable-output &&
-; RUN: llvm-upgrade < %s | llvm-as | opt -instcombine | llvm-dis | not grep '(and\|xor\|add\|shl\|shr)'
-
-int %test1(int %x) {
-        %tmp.1 = and int %x, 65535              ; <int> [#uses=1]
-        %tmp.2 = xor int %tmp.1, -32768         ; <int> [#uses=1]
-        %tmp.3 = add int %tmp.2, 32768          ; <int> [#uses=1]
-        ret int %tmp.3
+; RUN: opt < %s -instcombine -S | FileCheck %s
+
+target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128:n8:16:32:64"
+
+define i32 @test1(i32 %x) {
+        %tmp.1 = and i32 %x, 65535              ; <i32> [#uses=1]
+        %tmp.2 = xor i32 %tmp.1, -32768         ; <i32> [#uses=1]
+        %tmp.3 = add i32 %tmp.2, 32768          ; <i32> [#uses=1]
+        ret i32 %tmp.3
+; CHECK-LABEL: @test1(
+; CHECK: %sext = shl i32 %x, 16
+; CHECK: %tmp.3 = ashr exact i32 %sext, 16
+; CHECK: ret i32 %tmp.3
 }
 
-int %test2(int %x) {
-        %tmp.1 = and int %x, 65535              ; <int> [#uses=1]
-        %tmp.2 = xor int %tmp.1, 32768          ; <int> [#uses=1]
-        %tmp.3 = add int %tmp.2, -32768         ; <int> [#uses=1]
-        ret int %tmp.3
+define i32 @test2(i32 %x) {
+        %tmp.1 = and i32 %x, 65535              ; <i32> [#uses=1]
+        %tmp.2 = xor i32 %tmp.1, 32768          ; <i32> [#uses=1]
+        %tmp.3 = add i32 %tmp.2, -32768         ; <i32> [#uses=1]
+        ret i32 %tmp.3
+; CHECK-LABEL: @test2(
+; CHECK: %sext = shl i32 %x, 16
+; CHECK: %tmp.3 = ashr exact i32 %sext, 16
+; CHECK: ret i32 %tmp.3
 }
 
-int %test3(ushort %P) {
-        %tmp.1 = cast ushort %P to int          ; <int> [#uses=1]
-        %tmp.4 = xor int %tmp.1, 32768          ; <int> [#uses=1]
-        %tmp.5 = add int %tmp.4, -32768         ; <int> [#uses=1]
-        ret int %tmp.5
+define i32 @test3(i16 %P) {
+        %tmp.1 = zext i16 %P to i32             ; <i32> [#uses=1]
+        %tmp.4 = xor i32 %tmp.1, 32768          ; <i32> [#uses=1]
+        %tmp.5 = add i32 %tmp.4, -32768         ; <i32> [#uses=1]
+        ret i32 %tmp.5
+; CHECK-LABEL: @test3(
+; CHECK: %tmp.5 = sext i16 %P to i32
+; CHECK: ret i32 %tmp.5
 }
 
-uint %test4(ushort %P) {
-        %tmp.1 = cast ushort %P to uint         ; <uint> [#uses=1]
-        %tmp.4 = xor uint %tmp.1, 32768         ; <uint> [#uses=1]
-        %tmp.5 = add uint %tmp.4, 4294934528            ; <uint> [#uses=1]
-        ret uint %tmp.5
+define i32 @test4(i32 %x) {
+        %tmp.1 = and i32 %x, 255                ; <i32> [#uses=1]
+        %tmp.2 = xor i32 %tmp.1, 128            ; <i32> [#uses=1]
+        %tmp.3 = add i32 %tmp.2, -128           ; <i32> [#uses=1]
+        ret i32 %tmp.3
+; CHECK-LABEL: @test4(
+; CHECK: %sext = shl i32 %x, 24
+; CHECK: %tmp.3 = ashr exact i32 %sext, 24
+; CHECK: ret i32 %tmp.3
 }
 
-int %test5(int %x) {
-       %tmp.1 = and int %x, 254
-       %tmp.2 = xor int %tmp.1, 128
-       %tmp.3 = add int %tmp.2, -128
-       ret int %tmp.3
+define i32 @test5(i32 %x) {
+        %tmp.2 = shl i32 %x, 16         ; <i32> [#uses=1]
+        %tmp.4 = ashr i32 %tmp.2, 16            ; <i32> [#uses=1]
+        ret i32 %tmp.4
+; CHECK-LABEL: @test5(
+; CHECK: %tmp.2 = shl i32 %x, 16
+; CHECK: %tmp.4 = ashr exact i32 %tmp.2, 16
+; CHECK: ret i32 %tmp.4
 }
 
-int %test6(int %x) {
-        %tmp.2 = shl int %x, ubyte 16           ; <int> [#uses=1]
-        %tmp.4 = shr int %tmp.2, ubyte 16               ; <int> [#uses=1]
-        ret int %tmp.4
+define i32 @test6(i16 %P) {
+  %tmp.1 = zext i16 %P to i32                     ; <i32> [#uses=1]
+  %sext1 = shl i32 %tmp.1, 16                     ; <i32> [#uses=1]
+  %tmp.5 = ashr i32 %sext1, 16                    ; <i32> [#uses=1]
+  ret i32 %tmp.5
+; CHECK-LABEL: @test6(
+; CHECK: %tmp.5 = sext i16 %P to i32
+; CHECK: ret i32 %tmp.5
 }
+
+define i32 @test7(i32 %x) nounwind readnone {
+entry:
+  %shr = lshr i32 %x, 5                           ; <i32> [#uses=1]
+  %xor = xor i32 %shr, 67108864                   ; <i32> [#uses=1]
+  %sub = add i32 %xor, -67108864                  ; <i32> [#uses=1]
+  ret i32 %sub
+; CHECK-LABEL: @test7(
+; CHECK: %sub = ashr i32 %x, 5
+; CHECK: ret i32 %sub
+}
+