IR: Give 'DI' prefix to debug info metadata

[oota-llvm.git] / test / Transforms / DeadArgElim / keepalive.ll

diff --git a/test/Transforms/DeadArgElim/keepalive.ll b/test/Transforms/DeadArgElim/keepalive.ll
index 902c6d69cc4f1a7e29d9713db1e903bc40e551da..d8a09933dcf9387ca3d239bbd1abb4a724931d19 100644 (file)
--- a/test/Transforms/DeadArgElim/keepalive.ll
+++ b/test/Transforms/DeadArgElim/keepalive.ll
@@ -1,36 +1,47 @@
-; RUN: llvm-as < %s | opt -deadargelim | llvm-dis > %t
-; RUN: cat %t | grep {define internal \{  \} @test}
-; RUN: cat %t | grep {define internal \{ i32 \} @test}
-; RUN: cat %t | grep {define internal \<\{ i32, i32 \}\> @test}
+; RUN: opt < %s -deadargelim -S | FileCheck %s
+
+%Ty = type <{ i32, i32 }>
 
 ; Check if the pass doesn't modify anything that doesn't need changing. We feed
 ; an unused argument to each function to lure it into changing _something_ about
-; the function and then changing to much.
-
-
-; This checks if the struct retval isn't changed into a void
-define internal {  } @test(i32 %DEADARG1) {
-        ret {  } {  } 
-}
+; the function and then changing too much.
 
-; This checks if the struct retval isn't removed
-define internal {i32} @test1(i32 %DEADARG1) {
-        ret { i32 } { i32 1 } 
+; This checks if the return value attributes are not removed
+; CHECK: define internal zeroext i32 @test1() #0
+define internal zeroext i32 @test1(i32 %DEADARG1) nounwind {
+        ret i32 1
 }
 
 ; This checks if the struct doesn't get non-packed
+; CHECK-LABEL: define internal <{ i32, i32 }> @test2(
 define internal <{ i32, i32 }> @test2(i32 %DEADARG1) {
         ret <{ i32, i32 }> <{ i32 1, i32 2 }>
 }
 
 ; We use this external function to make sure the return values don't become dead
-declare void @user({  }, { i32 }, <{ i32, i32 }>)
+declare void @user(i32, <{ i32, i32 }>)
 
 define void @caller() {
-        %A = call {  } @test(i32 0)
-        %B = call { i32 } @test1(i32 1)
+        %B = call i32 @test1(i32 1)
         %C = call <{ i32, i32 }> @test2(i32 2)
-        call void @user({  } %A, { i32 } %B, <{ i32, i32 }> %C)
+        call void @user(i32 %B, <{ i32, i32 }> %C)
         ret void
 }
 
+; We can't remove 'this' here, as that would put argmem in ecx instead of
+; memory.
+define internal x86_thiscallcc i32 @unused_this(i32* %this, i32* inalloca %argmem) {
+       %v = load i32, i32* %argmem
+       ret i32 %v
+}
+; CHECK-LABEL: define internal x86_thiscallcc i32 @unused_this(i32* %this, i32* inalloca %argmem)
+
+define i32 @caller2() {
+       %t = alloca i32
+       %m = alloca inalloca i32
+       store i32 42, i32* %m
+       %v = call x86_thiscallcc i32 @unused_this(i32* %t, i32* inalloca %m)
+       ret i32 %v
+}
+
+; CHECK: attributes #0 = { nounwind }