DI: Require subprogram definitions to be distinct

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

diff --git a/test/Transforms/InstCombine/cast-set.ll b/test/Transforms/InstCombine/cast-set.ll
index e9312ad5d9a7eb7c1b9b8be86257e6cebac3dd39..8f19bdcdfde31bc734071c5a6d6a467e4430bce1 100644 (file)
--- a/test/Transforms/InstCombine/cast-set.ll
+++ b/test/Transforms/InstCombine/cast-set.ll
@@ -1,23 +1,72 @@
-; I'm not really sure if instcombine should do things like these.  LevelRaise 
-; already sufficiently takes care of these cases, but level raise is really
-; slow.  Might it be better to make there be an instcombine prepass before
-; level raise that takes care of the obvious stuff?
-
-; RUN: if as < %s | opt -instcombine | dis | grep cast
-; RUN: then exit 1
-; RUN: else exit 0
-; RUN: fi
-
-bool "test1"(int %X) {
-       %A = cast int %X to uint
-       %c = setne uint %A, 0        ; Convert to setne int %X, 0
-       ret bool %c
+; This tests for various complex cast elimination cases instcombine should
+; handle.
+
+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"
+
+; RUN: opt < %s -instcombine -S | FileCheck %s
+
+define i1 @test1(i32 %X) {
+        %A = bitcast i32 %X to i32              ; <i32> [#uses=1]
+        ; Convert to setne int %X, 12
+        %c = icmp ne i32 %A, 12         ; <i1> [#uses=1]
+        ret i1 %c
+; CHECK-LABEL: @test1(
+; CHECK: %c = icmp ne i32 %X, 12
+; CHECK: ret i1 %c
+}
+
+define i1 @test2(i32 %X, i32 %Y) {
+        %A = bitcast i32 %X to i32              ; <i32> [#uses=1]
+        %B = bitcast i32 %Y to i32              ; <i32> [#uses=1]
+        ; Convert to setne int %X, %Y
+        %c = icmp ne i32 %A, %B         ; <i1> [#uses=1]
+        ret i1 %c
+; CHECK-LABEL: @test2(
+; CHECK: %c = icmp ne i32 %X, %Y
+; CHECK: ret i1 %c
+}
+
+define i32 @test4(i32 %A) {
+        %B = bitcast i32 %A to i32              ; <i32> [#uses=1]
+        %C = shl i32 %B, 2              ; <i32> [#uses=1]
+        %D = bitcast i32 %C to i32              ; <i32> [#uses=1]
+        ret i32 %D
+; CHECK-LABEL: @test4(
+; CHECK: %C = shl i32 %A, 2
+; CHECK: ret i32 %C
+}
+
+define i16 @test5(i16 %A) {
+        %B = sext i16 %A to i32         ; <i32> [#uses=1]
+        %C = and i32 %B, 15             ; <i32> [#uses=1]
+        %D = trunc i32 %C to i16                ; <i16> [#uses=1]
+        ret i16 %D
+; CHECK-LABEL: @test5(
+; CHECK: %C = and i16 %A, 15
+; CHECK: ret i16 %C
 }
 
-bool "test2"(int %X, int %Y) {
-       %A = cast int %X to uint
-       %B = cast int %Y to uint
-       %c = setne uint %A, %B       ; Convert to setne int %X, %Y
-       ret bool %c
+define i1 @test6(i1 %A) {
+        %B = zext i1 %A to i32          ; <i32> [#uses=1]
+        %C = icmp ne i32 %B, 0          ; <i1> [#uses=1]
+        ret i1 %C
+; CHECK-LABEL: @test6(
+; CHECK: ret i1 %A
 }
 
+define i1 @test6a(i1 %A) {
+        %B = zext i1 %A to i32          ; <i32> [#uses=1]
+        %C = icmp ne i32 %B, -1         ; <i1> [#uses=1]
+        ret i1 %C
+; CHECK-LABEL: @test6a(
+; CHECK: ret i1 true
+}
+
+define i1 @test7(i8* %A) {
+        %B = bitcast i8* %A to i32*             ; <i32*> [#uses=1]
+        %C = icmp eq i32* %B, null              ; <i1> [#uses=1]
+        ret i1 %C
+; CHECK-LABEL: @test7(
+; CHECK: %C = icmp eq i8* %A, null
+; CHECK: ret i1 %C
+}