InstCombine: Bitcast call arguments from/to pointer/integer type

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

diff --git a/test/Transforms/InstCombine/call-cast-target.ll b/test/Transforms/InstCombine/call-cast-target.ll
index 1a02514d1a7bc9dbdea18592631b1c385e695a21..b82dd99db36f6c28c1c8e83b4a9962703d39191b 100644 (file)
--- a/test/Transforms/InstCombine/call-cast-target.ll
+++ b/test/Transforms/InstCombine/call-cast-target.ll
@@ -1,14 +1,63 @@
-; RUN: llvm-as < %s | opt -instcombine | llvm-dis | \
-; RUN:   grep call | not grep bitcast
+; RUN: opt < %s -instcombine -S | FileCheck %s
 
 target datalayout = "e-p:32:32"
 target triple = "i686-pc-linux-gnu"
 
 define i32 @main() {
+; CHECK-LABEL: @main
+; CHECK: %[[call:.*]] = call i8* @ctime(i32* null)
+; CHECK: %[[cast:.*]] = ptrtoint i8* %[[call]] to i32
+; CHECK: ret i32 %[[cast]]
 entry:
-        %tmp = call i32 bitcast (i8* (i32*)* @ctime to i32 (i32*)*)( i32* null )          ; <i32> [#uses=1]
-        ret i32 %tmp
+  %tmp = call i32 bitcast (i8* (i32*)* @ctime to i32 (i32*)*)( i32* null )          ; <i32> [#uses=1]
+  ret i32 %tmp
 }
 
 declare i8* @ctime(i32*)
 
+define internal { i8 } @foo(i32*) {
+entry:
+  ret { i8 } { i8 0 }
+}
+
+define void @test_struct_ret() {
+; CHECK-LABEL: @test_struct_ret
+; CHECK-NOT: bitcast
+entry:
+  %0 = call { i8 } bitcast ({ i8 } (i32*)* @foo to { i8 } (i16*)*)(i16* null)
+  ret void
+}
+
+declare i32 @fn1(i32)
+
+define i32 @test1(i32* %a) {
+; CHECK-LABEL: @test1
+; CHECK:      %[[cast:.*]] = ptrtoint i32* %a to i32
+; CHECK-NEXT: %[[call:.*]] = tail call i32 @fn1(i32 %[[cast]])
+; CHECK-NEXT: ret i32 %[[call]]
+entry:
+  %call = tail call i32 bitcast (i32 (i32)* @fn1 to i32 (i32*)*)(i32* %a)
+  ret i32 %call
+}
+
+declare i32 @fn2(i16)
+
+define i32 @test2(i32* %a) {
+; CHECK-LABEL: @test2
+; CHECK:      %[[call:.*]] = tail call i32 bitcast (i32 (i16)* @fn2 to i32 (i32*)*)(i32* %a)
+; CHECK-NEXT: ret i32 %[[call]]
+entry:
+  %call = tail call i32 bitcast (i32 (i16)* @fn2 to i32 (i32*)*)(i32* %a)
+  ret i32 %call
+}
+
+declare i32 @fn3(i64)
+
+define i32 @test3(i32* %a) {
+; CHECK-LABEL: @test3
+; CHECK:      %[[call:.*]] = tail call i32 bitcast (i32 (i64)* @fn3 to i32 (i32*)*)(i32* %a)
+; CHECK-NEXT: ret i32 %[[call]]
+entry:
+  %call = tail call i32 bitcast (i32 (i64)* @fn3 to i32 (i32*)*)(i32* %a)
+  ret i32 %call
+}