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1; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py2; RUN: opt -S -mtriple=amdgcn-- -structurizecfg -si-annotate-control-flow %s | FileCheck -check-prefix=IR %s3; RUN: llc -mtriple=amdgcn-amd-amdhsa -mcpu=gfx900 < %s | FileCheck %s4 5define void @loop_on_argument(i1 %arg) {6; IR-LABEL: @loop_on_argument(7; IR-NEXT: entry:8; IR-NEXT: br label [[LOOP:%.*]]9; IR: loop:10; IR-NEXT: [[PHI_BROKEN:%.*]] = phi i64 [ [[TMP0:%.*]], [[LOOP]] ], [ 0, [[ENTRY:%.*]] ]11; IR-NEXT: [[TMP0]] = call i64 @llvm.amdgcn.if.break.i64(i1 [[ARG:%.*]], i64 [[PHI_BROKEN]])12; IR-NEXT: store volatile i32 0, ptr addrspace(1) poison, align 413; IR-NEXT: [[TMP1:%.*]] = call i1 @llvm.amdgcn.loop.i64(i64 [[TMP0]])14; IR-NEXT: br i1 [[TMP1]], label [[EXIT:%.*]], label [[LOOP]]15; IR: exit:16; IR-NEXT: call void @llvm.amdgcn.end.cf.i64(i64 [[TMP0]])17; IR-NEXT: ret void18;19; CHECK-LABEL: loop_on_argument:20; CHECK: ; %bb.0: ; %entry21; CHECK-NEXT: s_waitcnt vmcnt(0) expcnt(0) lgkmcnt(0)22; CHECK-NEXT: v_and_b32_e32 v0, 1, v023; CHECK-NEXT: v_cmp_eq_u32_e32 vcc, 1, v024; CHECK-NEXT: s_mov_b64 s[4:5], 025; CHECK-NEXT: v_mov_b32_e32 v0, 026; CHECK-NEXT: .LBB0_1: ; %loop27; CHECK-NEXT: ; =>This Inner Loop Header: Depth=128; CHECK-NEXT: s_and_b64 s[6:7], exec, vcc29; CHECK-NEXT: s_or_b64 s[4:5], s[6:7], s[4:5]30; CHECK-NEXT: global_store_dword v[0:1], v0, off31; CHECK-NEXT: s_waitcnt vmcnt(0)32; CHECK-NEXT: s_andn2_b64 exec, exec, s[4:5]33; CHECK-NEXT: s_cbranch_execnz .LBB0_134; CHECK-NEXT: ; %bb.2: ; %exit35; CHECK-NEXT: s_or_b64 exec, exec, s[4:5]36; CHECK-NEXT: s_setpc_b64 s[30:31]37entry:38 br label %loop39 40loop:41 store volatile i32 0, ptr addrspace(1) poison42 br i1 %arg, label %exit, label %loop43 44exit:45 ret void46}47