1; RUN: llc -mtriple=amdgcn-amd-amdhsa -mcpu=gfx900 -verify-machineinstrs < %s | FileCheck --check-prefix=GCN %s 2; RUN: llc -global-isel -amdgpu-fixed-function-abi -mtriple=amdgcn-amd-amdhsa -mcpu=gfx900 -verify-machineinstrs < %s | FileCheck --check-prefix=GCN %s 3 4; Test with zero frame 5; GCN-LABEL: {{^}}func1 6; GCN: v_mov_b32_e32 v0, s30 7; GCN: v_mov_b32_e32 v1, s31 8; GCN: s_setpc_b64 s[30:31] 9define i8* @func1() nounwind { 10entry: 11 %0 = tail call i8* @llvm.returnaddress(i32 0) 12 ret i8* %0 13} 14 15; Test with non-zero frame 16; GCN-LABEL: {{^}}func2 17; GCN: v_mov_b32_e32 v0, 0 18; GCN: v_mov_b32_e32 v1, 0 19; GCN: s_setpc_b64 s[30:31] 20define i8* @func2() nounwind { 21entry: 22 %0 = tail call i8* @llvm.returnaddress(i32 1) 23 ret i8* %0 24} 25 26; Test with amdgpu_kernel 27; GCN-LABEL: {{^}}func3 28; GCN: v_mov_b32_e32 v0, 0 29; GCN: v_mov_b32_e32 v1, {{v0|0}} 30define amdgpu_kernel void @func3(i8** %out) nounwind { 31entry: 32 %tmp = tail call i8* @llvm.returnaddress(i32 0) 33 store i8* %tmp, i8** %out, align 4 34 ret void 35} 36 37; Test with use outside the entry-block 38; GCN-LABEL: {{^}}func4 39; GCN: v_mov_b32_e32 v0, 0 40; GCN: v_mov_b32_e32 v1, {{v0|0}} 41define amdgpu_kernel void @func4(i8** %out, i32 %val) nounwind { 42entry: 43 %cmp = icmp ne i32 %val, 0 44 br i1 %cmp, label %store, label %exit 45 46store: 47 %tmp = tail call i8* @llvm.returnaddress(i32 1) 48 store i8* %tmp, i8** %out, align 4 49 ret void 50 51exit: 52 ret void 53} 54 55; Test ending in unreachable 56; GCN-LABEL: {{^}}func5 57; GCN: v_mov_b32_e32 v0, 0 58define void @func5() nounwind { 59entry: 60 %tmp = tail call i8* @llvm.returnaddress(i32 2) 61 store volatile i32 0, i32 addrspace(3)* undef, align 4 62 unreachable 63} 64 65declare void @callee() 66 67; GCN-LABEL: {{^}}multi_use: 68; GCN-DAG: v_mov_b32_e32 v[[LO:4[0-9]+]], s30 69; GCN-DAG: v_mov_b32_e32 v[[HI:4[0-9]+]], s31 70; GCN: global_store_dwordx2 v{{\[[0-9]+:[0-9]+\]}}, v{{\[}}[[LO]]:[[HI]]{{\]}} 71; GCN: s_swappc_b64 72; GCN: global_store_dwordx2 v{{\[[0-9]+:[0-9]+\]}}, v{{\[}}[[LO]]:[[HI]]{{\]}} 73define void @multi_use() nounwind { 74entry: 75 %ret0 = tail call i8* @llvm.returnaddress(i32 0) 76 store volatile i8* %ret0, i8* addrspace(1)* undef 77 call void @callee() 78 %ret1 = tail call i8* @llvm.returnaddress(i32 0) 79 store volatile i8* %ret1, i8* addrspace(1)* undef 80 ret void 81} 82 83declare i8* @llvm.returnaddress(i32) nounwind readnone 84