[gc.statepoint] Change gc.statepoint intrinsic's return type to token type instead of i32 type

Summary: This patch changes gc.statepoint intrinsic's return type to token type instead of i32 type. Using token types could prevent LLVM to merge different gc.statepoint nodes into PHI nodes and cause further problems with gc relocations. The patch also changes the way on how gc.relocate and gc.result look for their corresponding gc.statepoint on unwind path. The current implementation uses the selector value extracted from a { i8*, i32 } landingpad as a hook to find the gc.statepoint, while the patch directly uses a token type landingpad (http://reviews.llvm.org/D15405) to find the gc.statepoint. 

Reviewers: sanjoy, JosephTremoulet, pgavlin, igor-laevsky, mjacob

Subscribers: reames, mjacob, sanjoy, llvm-commits

Differential Revision: http://reviews.llvm.org/D15662

llvm-svn: 256443

1 files changed, 8 insertions, 8 deletions

diff --git a/llvm/test/Transforms/RewriteStatepointsForGC/live-vector.ll b/llvm/test/Transforms/RewriteStatepointsForGC/live-vector.ll
index 20640b58a31..584fd7add1b 100644
--- a/llvm/test/Transforms/RewriteStatepointsForGC/live-vector.ll
+++ b/llvm/test/Transforms/RewriteStatepointsForGC/live-vector.ll
@@ -10,7 +10,7 @@ define i64 addrspace(1)* @test(i64 addrspace(1)* %obj) gc "statepoint-example" {
 ; CHECK-NEXT: bitcast
 ; CHECK-NEXT: ret i64 addrspace(1)* %obj.relocated.casted
 entry:
-  %safepoint_token = call i32 (i64, i32, void ()*, i32, i32, ...) @llvm.experimental.gc.statepoint.p0f_isVoidf(i64 0, i32 0, void ()* @do_safepoint, i32 0, i32 0, i32 0, i32 0)
+  %safepoint_token = call token (i64, i32, void ()*, i32, i32, ...) @llvm.experimental.gc.statepoint.p0f_isVoidf(i64 0, i32 0, void ()* @do_safepoint, i32 0, i32 0, i32 0, i32 0)
   ret i64 addrspace(1)* %obj
 }
 
@@ -28,7 +28,7 @@ define <2 x i64 addrspace(1)*> @test2(<2 x i64 addrspace(1)*> %obj) gc "statepoi
 ; CHECK-NEXT: insertelement
 ; CHECK-NEXT: ret <2 x i64 addrspace(1)*> %7
 entry:
-  %safepoint_token = call i32 (i64, i32, void ()*, i32, i32, ...) @llvm.experimental.gc.statepoint.p0f_isVoidf(i64 0, i32 0, void ()* @do_safepoint, i32 0, i32 0, i32 0, i32 0)
+  %safepoint_token = call token (i64, i32, void ()*, i32, i32, ...) @llvm.experimental.gc.statepoint.p0f_isVoidf(i64 0, i32 0, void ()* @do_safepoint, i32 0, i32 0, i32 0, i32 0)
   ret <2 x i64 addrspace(1)*> %obj
 }
 
@@ -48,7 +48,7 @@ define <2 x i64 addrspace(1)*> @test3(<2 x i64 addrspace(1)*>* %ptr) gc "statepo
 ; CHECK-NEXT: ret <2 x i64 addrspace(1)*> %7
 entry:
   %obj = load <2 x i64 addrspace(1)*>, <2 x i64 addrspace(1)*>* %ptr
-  %safepoint_token = call i32 (i64, i32, void ()*, i32, i32, ...) @llvm.experimental.gc.statepoint.p0f_isVoidf(i64 0, i32 0, void ()* @do_safepoint, i32 0, i32 0, i32 0, i32 0)
+  %safepoint_token = call token (i64, i32, void ()*, i32, i32, ...) @llvm.experimental.gc.statepoint.p0f_isVoidf(i64 0, i32 0, void ()* @do_safepoint, i32 0, i32 0, i32 0, i32 0)
   ret <2 x i64 addrspace(1)*> %obj
 }
 
@@ -63,7 +63,7 @@ define <2 x i64 addrspace(1)*> @test4(<2 x i64 addrspace(1)*>* %ptr) gc "statepo
 ; CHECK-NEXT: gc.statepoint
 entry:
   %obj = load <2 x i64 addrspace(1)*>, <2 x i64 addrspace(1)*>* %ptr
-  invoke i32 (i64, i32, void ()*, i32, i32, ...) @llvm.experimental.gc.statepoint.p0f_isVoidf(i64 0, i32 0, void ()* @do_safepoint, i32 0, i32 0, i32 0, i32 0)
+  invoke token (i64, i32, void ()*, i32, i32, ...) @llvm.experimental.gc.statepoint.p0f_isVoidf(i64 0, i32 0, void ()* @do_safepoint, i32 0, i32 0, i32 0, i32 0)
           to label %normal_return unwind label %exceptional_return
 
 ; CHECK-LABEL: normal_return:
@@ -86,7 +86,7 @@ normal_return:                                    ; preds = %entry
 ; CHECK-NEXT: insertelement
 ; CHECK-NEXT: ret <2 x i64 addrspace(1)*> %14
 exceptional_return:                               ; preds = %entry
-  %landing_pad4 = landingpad { i8*, i32 }
+  %landing_pad4 = landingpad token
           cleanup
   ret <2 x i64 addrspace(1)*> %obj
 }
@@ -110,7 +110,7 @@ define <2 x i64 addrspace(1)*> @test5(i64 addrspace(1)* %p)
 ; CHECK-NEXT: ret <2 x i64 addrspace(1)*> %7
 entry:
   %vec = insertelement <2 x i64 addrspace(1)*> undef, i64 addrspace(1)* %p, i32 0
-  %safepoint_token = call i32 (i64, i32, void ()*, i32, i32, ...) @llvm.experimental.gc.statepoint.p0f_isVoidf(i64 0, i32 0, void ()* @do_safepoint, i32 0, i32 0, i32 0, i32 0)
+  %safepoint_token = call token (i64, i32, void ()*, i32, i32, ...) @llvm.experimental.gc.statepoint.p0f_isVoidf(i64 0, i32 0, void ()* @do_safepoint, i32 0, i32 0, i32 0, i32 0)
   ret <2 x i64 addrspace(1)*> %vec
 }
 
@@ -142,11 +142,11 @@ untaken:
 
 merge:
   %obj = phi <2 x i64 addrspace(1)*> [%obja, %taken], [%objb, %untaken]
-  %safepoint_token = call i32 (i64, i32, void ()*, i32, i32, ...) @llvm.experimental.gc.statepoint.p0f_isVoidf(i64 0, i32 0, void ()* @do_safepoint, i32 0, i32 0, i32 0, i32 0)
+  %safepoint_token = call token (i64, i32, void ()*, i32, i32, ...) @llvm.experimental.gc.statepoint.p0f_isVoidf(i64 0, i32 0, void ()* @do_safepoint, i32 0, i32 0, i32 0, i32 0)
   ret <2 x i64 addrspace(1)*> %obj
 }
 
 
 declare void @do_safepoint()
 
-declare i32 @llvm.experimental.gc.statepoint.p0f_isVoidf(i64, i32, void ()*, i32, i32, ...)
+declare token @llvm.experimental.gc.statepoint.p0f_isVoidf(i64, i32, void ()*, i32, i32, ...)