| ; RUN: opt -mtriple amdgcn-unknown-amdhsa -analyze -divergence -use-gpu-divergence-analysis %s | FileCheck %s |
| |
| ; CHECK: for function 'readfirstlane': |
| define amdgpu_kernel void @readfirstlane() { |
| %id.x = call i32 @llvm.amdgcn.workitem.id.x() |
| ; CHECK: DIVERGENT: %id.x = call i32 @llvm.amdgcn.workitem.id.x() |
| %first.lane = call i32 @llvm.amdgcn.readfirstlane(i32 %id.x) |
| ; CHECK-NOT: DIVERGENT: %first.lane = call i32 @llvm.amdgcn.readfirstlane(i32 %id.x) |
| ret void |
| } |
| |
| ; CHECK: for function 'icmp': |
| define amdgpu_kernel void @icmp(i32 inreg %x) { |
| ; CHECK-NOT: DIVERGENT: %icmp = call i64 @llvm.amdgcn.icmp.i32 |
| %icmp = call i64 @llvm.amdgcn.icmp.i32(i32 %x, i32 0, i32 33) |
| ret void |
| } |
| |
| ; CHECK: for function 'fcmp': |
| define amdgpu_kernel void @fcmp(float inreg %x, float inreg %y) { |
| ; CHECK-NOT: DIVERGENT: %fcmp = call i64 @llvm.amdgcn.fcmp.i32 |
| %fcmp = call i64 @llvm.amdgcn.fcmp.i32(float %x, float %y, i32 33) |
| ret void |
| } |
| |
| declare i32 @llvm.amdgcn.workitem.id.x() #0 |
| declare i32 @llvm.amdgcn.readfirstlane(i32) #0 |
| declare i64 @llvm.amdgcn.icmp.i32(i32, i32, i32) #1 |
| declare i64 @llvm.amdgcn.fcmp.i32(float, float, i32) #1 |
| |
| attributes #0 = { nounwind readnone } |
| attributes #1 = { nounwind readnone convergent } |
