; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; RUN: llc -mtriple=amdgcn-amd-amdhsa -mcpu=gfx900 -stress-regalloc=4 -o - %s | FileCheck %s
; Make sure we can rematerialize split 64-bit constants (which
; MachineLICM hoisted out of the loop) and avoid spilling inside the
; loop.
;
; MachineLICM originally believed the constant materializes to be
; rematerializable, but the lowered REG_SEQUENCE uses they coalesece
; into were not. The InlineSpiller also did not recognize redundant
; spills inside the loop, so we would repeatedly reload the same
; values.
define amdgpu_kernel void @_Z6kernelILi4000ELi1EEvPd(ptr addrspace(1) %x.coerce) {
; CHECK-LABEL: _Z6kernelILi4000ELi1EEvPd:
; CHECK: ; %bb.0: ; %entry
; CHECK-NEXT: s_mov_b64 s[0:1], 0
; CHECK-NEXT: s_load_dword s2, s[0:1], 0x0
; CHECK-NEXT: s_load_dwordx2 s[6:7], s[0:1], 0x0
; CHECK-NEXT: s_mov_b32 s4, 0
; CHECK-NEXT: s_mov_b32 s0, 0
; CHECK-NEXT: s_mov_b32 s5, 0x40280000
; CHECK-NEXT: s_waitcnt lgkmcnt(0)
; CHECK-NEXT: s_mov_b32 s1, s2
; CHECK-NEXT: s_mov_b32 s2, 0
; CHECK-NEXT: v_mov_b32_e32 v0, s6
; CHECK-NEXT: s_mov_b32 s3, 0x40260000
; CHECK-NEXT: v_mov_b32_e32 v1, s7
; CHECK-NEXT: .LBB0_1: ; %for.cond4.preheader
; CHECK-NEXT: ; =>This Inner Loop Header: Depth=1
; CHECK-NEXT: v_add_f64 v[0:1], v[0:1], 0
; CHECK-NEXT: s_mov_b32 s6, 0
; CHECK-NEXT: s_mov_b32 s7, 0x40140000
; CHECK-NEXT: s_add_i32 s0, s0, s1
; CHECK-NEXT: s_cmpk_lt_i32 s0, 0xa00
; CHECK-NEXT: v_add_f64 v[0:1], v[0:1], s[6:7]
; CHECK-NEXT: s_mov_b32 s6, 0
; CHECK-NEXT: s_mov_b32 s7, 0x40180000
; CHECK-NEXT: v_add_f64 v[0:1], v[0:1], s[6:7]
; CHECK-NEXT: s_mov_b32 s6, 0
; CHECK-NEXT: s_mov_b32 s7, 0x401c0000
; CHECK-NEXT: v_add_f64 v[0:1], v[0:1], s[6:7]
; CHECK-NEXT: s_mov_b32 s6, 0
; CHECK-NEXT: s_mov_b32 s7, 0x40220000
; CHECK-NEXT: v_add_f64 v[0:1], v[0:1], s[6:7]
; CHECK-NEXT: s_mov_b32 s6, 0
; CHECK-NEXT: s_mov_b32 s7, 0x40240000
; CHECK-NEXT: v_add_f64 v[0:1], v[0:1], s[6:7]
; CHECK-NEXT: v_add_f64 v[0:1], v[0:1], s[2:3]
; CHECK-NEXT: v_add_f64 v[0:1], v[0:1], s[4:5]
; CHECK-NEXT: s_cbranch_scc1 .LBB0_1
; CHECK-NEXT: ; %bb.2: ; %for.cond.cleanup.loopexit
; CHECK-NEXT: v_mov_b32_e32 v2, 0
; CHECK-NEXT: v_mov_b32_e32 v3, 0
; CHECK-NEXT: global_store_dwordx2 v[2:3], v[0:1], off
; CHECK-NEXT: s_endpgm
entry:
%0 = load i32, ptr addrspace(4) null, align 4
%cmp6 = icmp slt i32 0, 2560
br i1 %cmp6, label %for.cond4.preheader, label %for.cond.cleanup
for.cond4.preheader: ; preds = %for.cond4.preheader, %entry
%idx.07 = phi i32 [ %add13, %for.cond4.preheader ], [ 0, %entry ]
%arrayidx.promoted = load double, ptr addrspace(1) null, align 8
%add9 = fadd contract double %arrayidx.promoted, 0.000000e+00
%add9.1 = fadd contract double %add9, 5.000000e+00
%add9.2 = fadd contract double %add9.1, 6.000000e+00
%add9.3 = fadd contract double %add9.2, 7.000000e+00
%add9.4 = fadd contract double %add9.3, 9.000000e+00
%add9.5 = fadd contract double %add9.4, 1.000000e+01
%add9.6 = fadd contract double %add9.5, 1.100000e+01
%add9.7 = fadd contract double %add9.6, 1.200000e+01
store double %add9.7, ptr addrspace(1) null, align 8
%add13 = add i32 %idx.07, %0
%cmp = icmp slt i32 %add13, 2560
br i1 %cmp, label %for.cond4.preheader, label %for.cond.cleanup
for.cond.cleanup: ; preds = %for.cond4.preheader, %entry
ret void
}
declare i32 @llvm.amdgcn.workitem.id.x() #0
declare i32 @llvm.amdgcn.workgroup.id.x() #0
declare align 4 ptr addrspace(4) @llvm.amdgcn.dispatch.ptr() #0
attributes #0 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }
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