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llvm-project/llvm/test/CodeGen/AMDGPU/GlobalISel/localizer.ll
Matt Arsenault 66fe60220c AMDGPU/GlobalISel: Fix masked control flow with fallthrough blocks 
Unlike SelectionDAGBuilder, IRTranslator omits the unconditional
branch in fallthrough cases. Confusingly, the control flow pseudos
function in the opposite way the intrinsics are used, and the branch
targets always need to be swapped. We're inverting the target blocks,
so we need to figure out the old fallthrough block and insert a branch
to the original unconditional branch target.
2020-05-22 10:31:44 -04:00

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LLVM
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; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; RUN: llc -global-isel -mtriple=amdgcn-amd-amdhsa -mcpu=gfx900 < %s | FileCheck -check-prefix=GFX9 %s
; Test the localizer did something and we don't materialize all
; constants in SGPRs in the entry block.
define amdgpu_kernel void @localize_constants(i1 %cond) {
; GFX9-LABEL: localize_constants:
; GFX9: ; %bb.0: ; %entry
; GFX9-NEXT: s_load_dword s1, s[4:5], 0x0
; GFX9-NEXT: s_mov_b32 s0, 1
; GFX9-NEXT: s_waitcnt lgkmcnt(0)
; GFX9-NEXT: s_xor_b32 s1, s1, 1
; GFX9-NEXT: s_and_b32 s1, s1, 1
; GFX9-NEXT: s_cmp_lg_u32 s1, 0
; GFX9-NEXT: s_cbranch_scc0 BB0_2
; GFX9-NEXT: ; %bb.1: ; %bb1
; GFX9-NEXT: v_mov_b32_e32 v0, 0x5be6
; GFX9-NEXT: global_store_dword v[0:1], v0, off
; GFX9-NEXT: v_mov_b32_e32 v0, 0x1c7
; GFX9-NEXT: global_store_dword v[0:1], v0, off
; GFX9-NEXT: v_mov_b32_e32 v0, 0x3e8
; GFX9-NEXT: global_store_dword v[0:1], v0, off
; GFX9-NEXT: v_mov_b32_e32 v0, 0x1c8
; GFX9-NEXT: global_store_dword v[0:1], v0, off
; GFX9-NEXT: v_mov_b32_e32 v0, 0x3e7
; GFX9-NEXT: global_store_dword v[0:1], v0, off
; GFX9-NEXT: v_mov_b32_e32 v0, 0x7b
; GFX9-NEXT: s_mov_b32 s0, 0
; GFX9-NEXT: global_store_dword v[0:1], v0, off
; GFX9-NEXT: BB0_2: ; %Flow
; GFX9-NEXT: s_and_b32 s0, s0, 1
; GFX9-NEXT: s_cmp_lg_u32 s0, 0
; GFX9-NEXT: s_cbranch_scc0 BB0_4
; GFX9-NEXT: ; %bb.3: ; %bb0
; GFX9-NEXT: v_mov_b32_e32 v0, 0x7b
; GFX9-NEXT: global_store_dword v[0:1], v0, off
; GFX9-NEXT: v_mov_b32_e32 v0, 0x1c8
; GFX9-NEXT: global_store_dword v[0:1], v0, off
; GFX9-NEXT: v_mov_b32_e32 v0, 0x3e7
; GFX9-NEXT: global_store_dword v[0:1], v0, off
; GFX9-NEXT: v_mov_b32_e32 v0, 0x3e8
; GFX9-NEXT: global_store_dword v[0:1], v0, off
; GFX9-NEXT: v_mov_b32_e32 v0, 0x1c7
; GFX9-NEXT: global_store_dword v[0:1], v0, off
; GFX9-NEXT: v_mov_b32_e32 v0, 0x5be6
; GFX9-NEXT: global_store_dword v[0:1], v0, off
; GFX9-NEXT: BB0_4: ; %bb2
; GFX9-NEXT: s_endpgm
entry:
br i1 %cond, label %bb0, label %bb1
bb0:
store volatile i32 123, i32 addrspace(1)* undef
store volatile i32 456, i32 addrspace(1)* undef
store volatile i32 999, i32 addrspace(1)* undef
store volatile i32 1000, i32 addrspace(1)* undef
store volatile i32 455, i32 addrspace(1)* undef
store volatile i32 23526, i32 addrspace(1)* undef
br label %bb2
bb1:
store volatile i32 23526, i32 addrspace(1)* undef
store volatile i32 455, i32 addrspace(1)* undef
store volatile i32 1000, i32 addrspace(1)* undef
store volatile i32 456, i32 addrspace(1)* undef
store volatile i32 999, i32 addrspace(1)* undef
store volatile i32 123, i32 addrspace(1)* undef
br label %bb2
bb2:
ret void
}
; FIXME: These aren't localized because thesee were legalized before
; the localizer, and are no longer G_GLOBAL_VALUE.
@gv0 = addrspace(1) global i32 undef, align 4
@gv1 = addrspace(1) global i32 undef, align 4
@gv2 = addrspace(1) global i32 undef, align 4
@gv3 = addrspace(1) global i32 undef, align 4
define amdgpu_kernel void @localize_globals(i1 %cond) {
; GFX9-LABEL: localize_globals:
; GFX9: ; %bb.0: ; %entry
; GFX9-NEXT: s_load_dword s1, s[4:5], 0x0
; GFX9-NEXT: s_mov_b32 s0, 1
; GFX9-NEXT: s_waitcnt lgkmcnt(0)
; GFX9-NEXT: s_xor_b32 s1, s1, 1
; GFX9-NEXT: s_and_b32 s1, s1, 1
; GFX9-NEXT: s_cmp_lg_u32 s1, 0
; GFX9-NEXT: s_cbranch_scc0 BB1_2
; GFX9-NEXT: ; %bb.1: ; %bb1
; GFX9-NEXT: s_getpc_b64 s[2:3]
; GFX9-NEXT: s_add_u32 s2, s2, gv2@gotpcrel32@lo+4
; GFX9-NEXT: s_addc_u32 s3, s3, gv2@gotpcrel32@hi+4
; GFX9-NEXT: s_getpc_b64 s[4:5]
; GFX9-NEXT: s_add_u32 s4, s4, gv3@gotpcrel32@lo+4
; GFX9-NEXT: s_addc_u32 s5, s5, gv3@gotpcrel32@hi+4
; GFX9-NEXT: s_load_dwordx2 s[4:5], s[4:5], 0x0
; GFX9-NEXT: s_load_dwordx2 s[2:3], s[2:3], 0x0
; GFX9-NEXT: v_mov_b32_e32 v2, 0
; GFX9-NEXT: s_mov_b32 s0, 0
; GFX9-NEXT: s_waitcnt lgkmcnt(0)
; GFX9-NEXT: v_mov_b32_e32 v0, s2
; GFX9-NEXT: v_mov_b32_e32 v1, s3
; GFX9-NEXT: global_store_dword v[0:1], v2, off
; GFX9-NEXT: v_mov_b32_e32 v0, s4
; GFX9-NEXT: v_mov_b32_e32 v2, 1
; GFX9-NEXT: v_mov_b32_e32 v1, s5
; GFX9-NEXT: global_store_dword v[0:1], v2, off
; GFX9-NEXT: BB1_2: ; %Flow
; GFX9-NEXT: s_and_b32 s0, s0, 1
; GFX9-NEXT: s_cmp_lg_u32 s0, 0
; GFX9-NEXT: s_cbranch_scc0 BB1_4
; GFX9-NEXT: ; %bb.3: ; %bb0
; GFX9-NEXT: s_getpc_b64 s[0:1]
; GFX9-NEXT: s_add_u32 s0, s0, gv0@gotpcrel32@lo+4
; GFX9-NEXT: s_addc_u32 s1, s1, gv0@gotpcrel32@hi+4
; GFX9-NEXT: s_load_dwordx2 s[0:1], s[0:1], 0x0
; GFX9-NEXT: s_getpc_b64 s[2:3]
; GFX9-NEXT: s_add_u32 s2, s2, gv1@gotpcrel32@lo+4
; GFX9-NEXT: s_addc_u32 s3, s3, gv1@gotpcrel32@hi+4
; GFX9-NEXT: s_load_dwordx2 s[2:3], s[2:3], 0x0
; GFX9-NEXT: v_mov_b32_e32 v2, 0
; GFX9-NEXT: v_mov_b32_e32 v3, 1
; GFX9-NEXT: s_waitcnt lgkmcnt(0)
; GFX9-NEXT: v_mov_b32_e32 v0, s0
; GFX9-NEXT: v_mov_b32_e32 v1, s1
; GFX9-NEXT: global_store_dword v[0:1], v2, off
; GFX9-NEXT: v_mov_b32_e32 v0, s2
; GFX9-NEXT: v_mov_b32_e32 v1, s3
; GFX9-NEXT: global_store_dword v[0:1], v3, off
; GFX9-NEXT: BB1_4: ; %bb2
; GFX9-NEXT: s_endpgm
entry:
br i1 %cond, label %bb0, label %bb1
bb0:
store volatile i32 0, i32 addrspace(1)* @gv0
store volatile i32 1, i32 addrspace(1)* @gv1
br label %bb2
bb1:
store volatile i32 0, i32 addrspace(1)* @gv2
store volatile i32 1, i32 addrspace(1)* @gv3
br label %bb2
bb2:
ret void
}
@static.gv0 = internal addrspace(1) global i32 undef, align 4
@static.gv1 = internal addrspace(1) global i32 undef, align 4
@static.gv2 = internal addrspace(1) global i32 undef, align 4
@static.gv3 = internal addrspace(1) global i32 undef, align 4
define void @localize_internal_globals(i1 %cond) {
; GFX9-LABEL: localize_internal_globals:
; GFX9: ; %bb.0: ; %entry
; GFX9-NEXT: s_waitcnt vmcnt(0) expcnt(0) lgkmcnt(0)
; GFX9-NEXT: v_and_b32_e32 v0, 1, v0
; GFX9-NEXT: v_cmp_ne_u32_e32 vcc, 0, v0
; GFX9-NEXT: v_cmp_ne_u32_e64 s[4:5], 0, 1
; GFX9-NEXT: s_xor_b64 s[4:5], vcc, s[4:5]
; GFX9-NEXT: s_and_saveexec_b64 s[6:7], s[4:5]
; GFX9-NEXT: s_xor_b64 s[4:5], exec, s[6:7]
; GFX9-NEXT: s_cbranch_execz BB2_2
; GFX9-NEXT: ; %bb.1: ; %bb1
; GFX9-NEXT: s_getpc_b64 s[6:7]
; GFX9-NEXT: s_add_u32 s6, s6, static.gv2@rel32@lo+4
; GFX9-NEXT: s_addc_u32 s7, s7, static.gv2@rel32@hi+4
; GFX9-NEXT: v_mov_b32_e32 v0, s6
; GFX9-NEXT: v_mov_b32_e32 v1, s7
; GFX9-NEXT: v_mov_b32_e32 v2, 0
; GFX9-NEXT: s_getpc_b64 s[6:7]
; GFX9-NEXT: s_add_u32 s6, s6, static.gv3@rel32@lo+4
; GFX9-NEXT: s_addc_u32 s7, s7, static.gv3@rel32@hi+4
; GFX9-NEXT: global_store_dword v[0:1], v2, off
; GFX9-NEXT: v_mov_b32_e32 v0, s6
; GFX9-NEXT: v_mov_b32_e32 v2, 1
; GFX9-NEXT: v_mov_b32_e32 v1, s7
; GFX9-NEXT: global_store_dword v[0:1], v2, off
; GFX9-NEXT: BB2_2: ; %Flow
; GFX9-NEXT: s_or_saveexec_b64 s[4:5], s[4:5]
; GFX9-NEXT: s_xor_b64 exec, exec, s[4:5]
; GFX9-NEXT: s_cbranch_execz BB2_4
; GFX9-NEXT: ; %bb.3: ; %bb0
; GFX9-NEXT: s_getpc_b64 s[6:7]
; GFX9-NEXT: s_add_u32 s6, s6, static.gv0@rel32@lo+4
; GFX9-NEXT: s_addc_u32 s7, s7, static.gv0@rel32@hi+4
; GFX9-NEXT: v_mov_b32_e32 v0, s6
; GFX9-NEXT: v_mov_b32_e32 v1, s7
; GFX9-NEXT: v_mov_b32_e32 v2, 0
; GFX9-NEXT: s_getpc_b64 s[6:7]
; GFX9-NEXT: s_add_u32 s6, s6, static.gv1@rel32@lo+4
; GFX9-NEXT: s_addc_u32 s7, s7, static.gv1@rel32@hi+4
; GFX9-NEXT: global_store_dword v[0:1], v2, off
; GFX9-NEXT: v_mov_b32_e32 v0, s6
; GFX9-NEXT: v_mov_b32_e32 v2, 1
; GFX9-NEXT: v_mov_b32_e32 v1, s7
; GFX9-NEXT: global_store_dword v[0:1], v2, off
; GFX9-NEXT: BB2_4: ; %bb2
; GFX9-NEXT: s_or_b64 exec, exec, s[4:5]
; GFX9-NEXT: s_waitcnt vmcnt(0)
; GFX9-NEXT: s_setpc_b64 s[30:31]
entry:
br i1 %cond, label %bb0, label %bb1
bb0:
store volatile i32 0, i32 addrspace(1)* @static.gv0
store volatile i32 1, i32 addrspace(1)* @static.gv1
br label %bb2
bb1:
store volatile i32 0, i32 addrspace(1)* @static.gv2
store volatile i32 1, i32 addrspace(1)* @static.gv3
br label %bb2
bb2:
ret void
}
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