forked from OSchip/llvm-project
312 lines
10 KiB
LLVM
312 lines
10 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
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; RUN: llc -march=amdgcn -mcpu=gfx1010 -amdgpu-opt-vgpr-liverange=true -verify-machineinstrs < %s | FileCheck -check-prefix=SI %s
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; a normal if-else
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define amdgpu_ps float @else1(i32 %z, float %v) #0 {
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; SI-LABEL: else1:
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; SI: ; %bb.0: ; %main_body
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; SI-NEXT: v_cmp_gt_i32_e32 vcc_lo, 6, v0
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; SI-NEXT: ; implicit-def: $vgpr0
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; SI-NEXT: s_and_saveexec_b32 s0, vcc_lo
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; SI-NEXT: s_xor_b32 s0, exec_lo, s0
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; SI-NEXT: ; %bb.1: ; %else
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; SI-NEXT: v_mul_f32_e32 v0, 0x40400000, v1
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; SI-NEXT: ; implicit-def: $vgpr1
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; SI-NEXT: ; %bb.2: ; %Flow
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; SI-NEXT: s_or_saveexec_b32 s0, s0
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; SI-NEXT: s_xor_b32 exec_lo, exec_lo, s0
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; SI-NEXT: ; %bb.3: ; %if
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; SI-NEXT: v_add_f32_e32 v0, v1, v1
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; SI-NEXT: ; %bb.4: ; %end
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; SI-NEXT: s_or_b32 exec_lo, exec_lo, s0
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; SI-NEXT: ; return to shader part epilog
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main_body:
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%cc = icmp sgt i32 %z, 5
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br i1 %cc, label %if, label %else
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if:
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%v.if = fmul float %v, 2.0
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br label %end
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else:
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%v.else = fmul float %v, 3.0
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br label %end
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end:
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%r = phi float [ %v.if, %if ], [ %v.else, %else ]
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ret float %r
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}
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; %v was used after if-else
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define amdgpu_ps float @else2(i32 %z, float %v) #0 {
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; SI-LABEL: else2:
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; SI: ; %bb.0: ; %main_body
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; SI-NEXT: v_cmp_gt_i32_e32 vcc_lo, 6, v0
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; SI-NEXT: ; implicit-def: $vgpr0
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; SI-NEXT: s_and_saveexec_b32 s0, vcc_lo
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; SI-NEXT: s_xor_b32 s0, exec_lo, s0
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; SI-NEXT: ; %bb.1: ; %else
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; SI-NEXT: v_mul_f32_e32 v0, 0x40400000, v1
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; SI-NEXT: ; %bb.2: ; %Flow
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; SI-NEXT: s_or_saveexec_b32 s0, s0
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; SI-NEXT: s_xor_b32 exec_lo, exec_lo, s0
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; SI-NEXT: ; %bb.3: ; %if
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; SI-NEXT: v_add_f32_e32 v1, v1, v1
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; SI-NEXT: v_mov_b32_e32 v0, v1
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; SI-NEXT: ; %bb.4: ; %end
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; SI-NEXT: s_or_b32 exec_lo, exec_lo, s0
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; SI-NEXT: v_add_f32_e32 v0, v1, v0
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; SI-NEXT: ; return to shader part epilog
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main_body:
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%cc = icmp sgt i32 %z, 5
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br i1 %cc, label %if, label %else
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if:
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%v.if = fmul float %v, 2.0
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br label %end
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else:
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%v.else = fmul float %v, 3.0
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br label %end
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end:
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%r0 = phi float [ %v.if, %if ], [ %v, %else ]
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%r1 = phi float [ %v.if, %if ], [ %v.else, %else ]
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%r2 = fadd float %r0, %r1
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ret float %r2
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}
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; if-else inside loop, %x can be optimized, but %v cannot be.
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define amdgpu_ps float @else3(i32 %z, float %v, i32 inreg %bound, i32 %x0) #0 {
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; SI-LABEL: else3:
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; SI: ; %bb.0: ; %entry
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; SI-NEXT: v_cmp_gt_i32_e32 vcc_lo, 6, v0
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; SI-NEXT: s_mov_b32 s1, 0
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; SI-NEXT: s_branch .LBB2_2
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; SI-NEXT: .LBB2_1: ; %if.end
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; SI-NEXT: ; in Loop: Header=BB2_2 Depth=1
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; SI-NEXT: s_or_b32 exec_lo, exec_lo, s2
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; SI-NEXT: v_add_nc_u32_e32 v2, 1, v0
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; SI-NEXT: s_add_i32 s1, s1, 1
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; SI-NEXT: s_cmp_lt_i32 s1, s0
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; SI-NEXT: s_cbranch_scc0 .LBB2_6
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; SI-NEXT: .LBB2_2: ; %for.body
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; SI-NEXT: ; =>This Inner Loop Header: Depth=1
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; SI-NEXT: ; implicit-def: $vgpr0
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; SI-NEXT: ; implicit-def: $vgpr3
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; SI-NEXT: s_and_saveexec_b32 s2, vcc_lo
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; SI-NEXT: s_xor_b32 s2, exec_lo, s2
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; SI-NEXT: ; %bb.3: ; %else
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; SI-NEXT: ; in Loop: Header=BB2_2 Depth=1
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; SI-NEXT: v_mul_lo_u32 v0, v2, 3
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; SI-NEXT: v_mul_f32_e32 v3, v1, v2
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; SI-NEXT: ; implicit-def: $vgpr2
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; SI-NEXT: ; %bb.4: ; %Flow
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; SI-NEXT: ; in Loop: Header=BB2_2 Depth=1
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; SI-NEXT: s_or_saveexec_b32 s2, s2
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; SI-NEXT: s_xor_b32 exec_lo, exec_lo, s2
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; SI-NEXT: s_cbranch_execz .LBB2_1
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; SI-NEXT: ; %bb.5: ; %if
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; SI-NEXT: ; in Loop: Header=BB2_2 Depth=1
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; SI-NEXT: v_mul_f32_e32 v3, s1, v1
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; SI-NEXT: v_add_nc_u32_e32 v0, 1, v2
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; SI-NEXT: s_branch .LBB2_1
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; SI-NEXT: .LBB2_6: ; %for.end
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; SI-NEXT: v_add_f32_e32 v0, v0, v3
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; SI-NEXT: ; return to shader part epilog
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entry:
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; %break = icmp sgt i32 %bound, 0
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; br i1 %break, label %for.body, label %for.end
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br label %for.body
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for.body:
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%i = phi i32 [ 0, %entry ], [ %inc, %if.end ]
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%x = phi i32 [ %x0, %entry ], [ %xinc, %if.end ]
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%cc = icmp sgt i32 %z, 5
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br i1 %cc, label %if, label %else
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if:
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%i.tmp = bitcast i32 %i to float
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%v.if = fmul float %v, %i.tmp
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%x.if = add i32 %x, 1
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br label %if.end
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else:
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%x.tmp = bitcast i32 %x to float
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%v.else = fmul float %v, %x.tmp
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%x.else = mul i32 %x, 3
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br label %if.end
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if.end:
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%v.endif = phi float [ %v.if, %if ], [ %v.else, %else ]
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%x.endif = phi i32 [ %x.if, %if ], [ %x.else, %else ]
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%xinc = add i32 %x.endif, 1
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%inc = add i32 %i, 1
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%cond = icmp slt i32 %inc, %bound
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br i1 %cond, label %for.body, label %for.end
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for.end:
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%x_float = bitcast i32 %x.endif to float
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%r = fadd float %x_float, %v.endif
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ret float %r
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}
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; a loop inside an if-else
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define amdgpu_ps float @loop(i32 %z, float %v, i32 inreg %bound, float(float)* %extern_func, float(float)* %extern_func2) #0 {
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; SI-LABEL: loop:
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; SI: ; %bb.0: ; %main_body
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; SI-NEXT: v_mov_b32_e32 v6, v0
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; SI-NEXT: s_mov_b32 s12, SCRATCH_RSRC_DWORD0
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; SI-NEXT: s_mov_b32 s13, SCRATCH_RSRC_DWORD1
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; SI-NEXT: s_mov_b32 s14, -1
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; SI-NEXT: v_mov_b32_e32 v0, v1
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; SI-NEXT: v_cmp_gt_i32_e32 vcc_lo, 6, v6
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; SI-NEXT: s_mov_b32 s15, 0x31c16000
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; SI-NEXT: s_add_u32 s12, s12, s1
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; SI-NEXT: s_addc_u32 s13, s13, 0
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; SI-NEXT: s_mov_b32 s32, 0
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; SI-NEXT: ; implicit-def: $vgpr1
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; SI-NEXT: s_and_saveexec_b32 s0, vcc_lo
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; SI-NEXT: s_xor_b32 s4, exec_lo, s0
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; SI-NEXT: s_cbranch_execz .LBB3_4
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; SI-NEXT: ; %bb.1: ; %else
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; SI-NEXT: s_mov_b32 s5, exec_lo
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; SI-NEXT: .LBB3_2: ; =>This Inner Loop Header: Depth=1
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; SI-NEXT: v_readfirstlane_b32 s6, v4
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; SI-NEXT: v_readfirstlane_b32 s7, v5
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; SI-NEXT: v_cmp_eq_u64_e32 vcc_lo, s[6:7], v[4:5]
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; SI-NEXT: s_and_saveexec_b32 s8, vcc_lo
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; SI-NEXT: s_mov_b64 s[0:1], s[12:13]
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; SI-NEXT: s_mov_b64 s[2:3], s[14:15]
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; SI-NEXT: s_swappc_b64 s[30:31], s[6:7]
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; SI-NEXT: v_mov_b32_e32 v1, v0
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; SI-NEXT: ; implicit-def: $vgpr4_vgpr5
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; SI-NEXT: ; implicit-def: $vgpr0
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; SI-NEXT: s_xor_b32 exec_lo, exec_lo, s8
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; SI-NEXT: s_cbranch_execnz .LBB3_2
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; SI-NEXT: ; %bb.3:
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; SI-NEXT: s_mov_b32 exec_lo, s5
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; SI-NEXT: ; implicit-def: $vgpr0
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; SI-NEXT: ; implicit-def: $vgpr2
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; SI-NEXT: .LBB3_4: ; %Flow
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; SI-NEXT: s_or_saveexec_b32 s4, s4
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; SI-NEXT: s_xor_b32 exec_lo, exec_lo, s4
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; SI-NEXT: s_cbranch_execz .LBB3_8
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; SI-NEXT: ; %bb.5: ; %if
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; SI-NEXT: s_mov_b32 s5, exec_lo
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; SI-NEXT: .LBB3_6: ; =>This Inner Loop Header: Depth=1
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; SI-NEXT: v_readfirstlane_b32 s6, v2
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; SI-NEXT: v_readfirstlane_b32 s7, v3
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; SI-NEXT: v_cmp_eq_u64_e32 vcc_lo, s[6:7], v[2:3]
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; SI-NEXT: s_and_saveexec_b32 s8, vcc_lo
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; SI-NEXT: s_mov_b64 s[0:1], s[12:13]
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; SI-NEXT: s_mov_b64 s[2:3], s[14:15]
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; SI-NEXT: s_swappc_b64 s[30:31], s[6:7]
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; SI-NEXT: v_mov_b32_e32 v1, v0
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; SI-NEXT: ; implicit-def: $vgpr2_vgpr3
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; SI-NEXT: ; implicit-def: $vgpr0
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; SI-NEXT: s_xor_b32 exec_lo, exec_lo, s8
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; SI-NEXT: s_cbranch_execnz .LBB3_6
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; SI-NEXT: ; %bb.7:
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; SI-NEXT: s_mov_b32 exec_lo, s5
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; SI-NEXT: .LBB3_8: ; %end
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; SI-NEXT: s_or_b32 exec_lo, exec_lo, s4
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; SI-NEXT: v_mov_b32_e32 v0, v1
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; SI-NEXT: ; return to shader part epilog
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main_body:
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%cc = icmp sgt i32 %z, 5
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br i1 %cc, label %if, label %else
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if:
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%v.if = call amdgpu_gfx float %extern_func(float %v)
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br label %end
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else:
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%v.else = call amdgpu_gfx float %extern_func2(float %v)
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br label %end
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end:
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%r = phi float [ %v.if, %if ], [ %v.else, %else ]
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ret float %r
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}
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; a loop inside an if-else, but the variable is still in use after the if-else
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define amdgpu_ps float @loop_with_use(i32 %z, float %v, i32 inreg %bound, float(float)* %extern_func, float(float)* %extern_func2) #0 {
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; SI-LABEL: loop_with_use:
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; SI: ; %bb.0: ; %main_body
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; SI-NEXT: s_mov_b32 s12, SCRATCH_RSRC_DWORD0
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; SI-NEXT: s_mov_b32 s13, SCRATCH_RSRC_DWORD1
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; SI-NEXT: s_mov_b32 s14, -1
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; SI-NEXT: v_mov_b32_e32 v40, v1
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; SI-NEXT: v_cmp_gt_i32_e32 vcc_lo, 6, v0
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; SI-NEXT: s_mov_b32 s15, 0x31c16000
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; SI-NEXT: s_add_u32 s12, s12, s1
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; SI-NEXT: s_addc_u32 s13, s13, 0
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; SI-NEXT: s_mov_b32 s32, 0
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; SI-NEXT: ; implicit-def: $vgpr0
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; SI-NEXT: s_and_saveexec_b32 s0, vcc_lo
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; SI-NEXT: s_xor_b32 s4, exec_lo, s0
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; SI-NEXT: s_cbranch_execz .LBB4_4
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; SI-NEXT: ; %bb.1: ; %else
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; SI-NEXT: s_mov_b32 s5, exec_lo
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; SI-NEXT: .LBB4_2: ; =>This Inner Loop Header: Depth=1
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; SI-NEXT: v_readfirstlane_b32 s6, v4
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; SI-NEXT: v_readfirstlane_b32 s7, v5
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; SI-NEXT: v_cmp_eq_u64_e32 vcc_lo, s[6:7], v[4:5]
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; SI-NEXT: s_and_saveexec_b32 s8, vcc_lo
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; SI-NEXT: v_mov_b32_e32 v0, v40
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; SI-NEXT: s_mov_b64 s[0:1], s[12:13]
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; SI-NEXT: s_mov_b64 s[2:3], s[14:15]
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; SI-NEXT: s_swappc_b64 s[30:31], s[6:7]
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; SI-NEXT: ; implicit-def: $vgpr4_vgpr5
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; SI-NEXT: s_xor_b32 exec_lo, exec_lo, s8
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; SI-NEXT: s_cbranch_execnz .LBB4_2
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; SI-NEXT: ; %bb.3:
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; SI-NEXT: s_mov_b32 exec_lo, s5
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; SI-NEXT: ; implicit-def: $vgpr2
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; SI-NEXT: .LBB4_4: ; %Flow
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; SI-NEXT: s_or_saveexec_b32 s4, s4
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; SI-NEXT: s_xor_b32 exec_lo, exec_lo, s4
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; SI-NEXT: s_cbranch_execz .LBB4_8
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; SI-NEXT: ; %bb.5: ; %if
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; SI-NEXT: s_mov_b32 s5, exec_lo
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; SI-NEXT: .LBB4_6: ; =>This Inner Loop Header: Depth=1
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; SI-NEXT: v_readfirstlane_b32 s6, v2
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; SI-NEXT: v_readfirstlane_b32 s7, v3
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; SI-NEXT: v_cmp_eq_u64_e32 vcc_lo, s[6:7], v[2:3]
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; SI-NEXT: s_and_saveexec_b32 s8, vcc_lo
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; SI-NEXT: v_mov_b32_e32 v0, v40
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; SI-NEXT: s_mov_b64 s[0:1], s[12:13]
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; SI-NEXT: s_mov_b64 s[2:3], s[14:15]
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; SI-NEXT: s_swappc_b64 s[30:31], s[6:7]
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; SI-NEXT: ; implicit-def: $vgpr2_vgpr3
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; SI-NEXT: s_xor_b32 exec_lo, exec_lo, s8
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; SI-NEXT: s_cbranch_execnz .LBB4_6
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; SI-NEXT: ; %bb.7:
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; SI-NEXT: s_mov_b32 exec_lo, s5
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; SI-NEXT: .LBB4_8: ; %end
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; SI-NEXT: s_or_b32 exec_lo, exec_lo, s4
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; SI-NEXT: v_add_f32_e32 v0, v0, v40
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; SI-NEXT: ; return to shader part epilog
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main_body:
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%cc = icmp sgt i32 %z, 5
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br i1 %cc, label %if, label %else
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if:
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%v.if = call amdgpu_gfx float %extern_func(float %v)
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br label %end
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else:
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%v.else = call amdgpu_gfx float %extern_func2(float %v)
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br label %end
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end:
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%r = phi float [ %v.if, %if ], [ %v.else, %else ]
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%r2 = fadd float %r, %v
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ret float %r2
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}
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attributes #0 = { nounwind }
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