diff --git a/irif/src/fence.ll b/irif/src/fence.ll
index 14f04b03..0bcaaaa9 100644
--- a/irif/src/fence.ll
+++ b/irif/src/fence.ll
@@ -1,27 +1,23 @@
 target datalayout = "e-p:32:32-p1:64:64-p2:64:64-p3:32:32-p4:64:64-p5:32:32-i64:64-v16:16-v24:32-v32:32-v48:64-v96:128-v192:256-v256:256-v512:512-v1024:1024-v2048:2048-n32:64"
 target triple = "amdgcn--amdhsa"
 
-;;
-;; syncscope number mapping is in llvm/target/AMDGPU/AMDGPU.h class AMDGPUSynchronizationScope
-;;
-
 define void @__llvm_fence_acq_wi() local_unnamed_addr #0 {
-  fence syncscope(5) acquire
+  fence syncscope("singlethread") acquire
   ret void
 }
 
 define void @__llvm_fence_acq_sg() local_unnamed_addr #0 {
-  fence syncscope(4) acquire
+  fence syncscope("wavefront") acquire
   ret void
 }
 
 define void @__llvm_fence_acq_wg() local_unnamed_addr #0 {
-  fence syncscope(3) acquire
+  fence syncscope("workgroup") acquire
   ret void
 }
 
 define void @__llvm_fence_acq_dev() local_unnamed_addr #0 {
-  fence syncscope(2) acquire
+  fence syncscope("agent") acquire
   ret void
 }
 
@@ -31,22 +27,22 @@ define void @__llvm_fence_acq_sys() local_unnamed_addr #0 {
 }
 
 define void @__llvm_fence_rel_wi() local_unnamed_addr #0 {
-  fence syncscope(5) release
+  fence syncscope("singlethread") release
   ret void
 }
 
 define void @__llvm_fence_rel_sg() local_unnamed_addr #0 {
-  fence syncscope(4) release
+  fence syncscope("wavefront") release
   ret void
 }
 
 define void @__llvm_fence_rel_wg() local_unnamed_addr #0 {
-  fence syncscope(3) release
+  fence syncscope("workgroup") release
   ret void
 }
 
 define void @__llvm_fence_rel_dev() local_unnamed_addr #0 {
-  fence syncscope(2) release
+  fence syncscope("agent") release
   ret void
 }
 
@@ -56,22 +52,22 @@ define void @__llvm_fence_rel_sys() local_unnamed_addr #0 {
 }
 
 define void @__llvm_fence_ar_wi() local_unnamed_addr #0 {
-  fence syncscope(5) acq_rel
+  fence syncscope("singlethread") acq_rel
   ret void
 }
 
 define void @__llvm_fence_ar_sg() local_unnamed_addr #0 {
-  fence syncscope(4) acq_rel
+  fence syncscope("wavefront") acq_rel
   ret void
 }
 
 define void @__llvm_fence_ar_wg() local_unnamed_addr #0 {
-  fence syncscope(3) acq_rel
+  fence syncscope("workgroup") acq_rel
   ret void
 }
 
 define void @__llvm_fence_ar_dev() local_unnamed_addr #0 {
-  fence syncscope(2) acq_rel
+  fence syncscope("agent") acq_rel
   ret void
 }
 
@@ -81,22 +77,22 @@ define void @__llvm_fence_ar_sys() local_unnamed_addr #0 {
 }
 
 define void @__llvm_fence_sc_wi() local_unnamed_addr #0 {
-  fence syncscope(5) seq_cst
+  fence syncscope("singlethread") seq_cst
   ret void
 }
 
 define void @__llvm_fence_sc_sg() local_unnamed_addr #0 {
-  fence syncscope(4) seq_cst
+  fence syncscope("wavefront") seq_cst
   ret void
 }
 
 define void @__llvm_fence_sc_wg() local_unnamed_addr #0 {
-  fence syncscope(3) seq_cst
+  fence syncscope("workgroup") seq_cst
   ret void
 }
 
 define void @__llvm_fence_sc_dev() local_unnamed_addr #0 {
-  fence syncscope(2) seq_cst
+  fence syncscope("agent") seq_cst
   ret void
 }