[llvm] [AMDGPU][True16][CodeGen] fp conversion in true/fake16 format (PR #101678)

[Ivan Kosarev via llvm-commits]

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@@ -44,25 +45,45 @@ define amdgpu_kernel void @test_convert_fp16_to_fp32(ptr addrspace(1) noalias %o
 ; GFX8-NEXT:    buffer_store_dword v0, off, s[4:7], 0
 ; GFX8-NEXT:    s_endpgm
 ;
-; GFX11-LABEL: test_convert_fp16_to_fp32:
-; GFX11:       ; %bb.0:
-; GFX11-NEXT:    s_load_b128 s[0:3], s[2:3], 0x24
-; GFX11-NEXT:    s_mov_b32 s6, -1
-; GFX11-NEXT:    s_mov_b32 s7, 0x31016000
-; GFX11-NEXT:    s_mov_b32 s10, s6
-; GFX11-NEXT:    s_mov_b32 s11, s7
-; GFX11-NEXT:    s_waitcnt lgkmcnt(0)
-; GFX11-NEXT:    s_mov_b32 s8, s2
-; GFX11-NEXT:    s_mov_b32 s9, s3
-; GFX11-NEXT:    s_mov_b32 s4, s0
-; GFX11-NEXT:    buffer_load_u16 v0, off, s[8:11], 0
-; GFX11-NEXT:    s_mov_b32 s5, s1
-; GFX11-NEXT:    s_waitcnt vmcnt(0)
-; GFX11-NEXT:    v_cvt_f32_f16_e32 v0, v0
-; GFX11-NEXT:    buffer_store_b32 v0, off, s[4:7], 0
-; GFX11-NEXT:    s_nop 0
-; GFX11-NEXT:    s_sendmsg sendmsg(MSG_DEALLOC_VGPRS)
-; GFX11-NEXT:    s_endpgm
+; GFX11-TRUE16-LABEL: test_convert_fp16_to_fp32:
+; GFX11-TRUE16:       ; %bb.0:
+; GFX11-TRUE16-NEXT:    s_load_b128 s[0:3], s[2:3], 0x24
+; GFX11-TRUE16-NEXT:    s_mov_b32 s6, -1
+; GFX11-TRUE16-NEXT:    s_mov_b32 s7, 0x31016000
+; GFX11-TRUE16-NEXT:    s_mov_b32 s10, s6
+; GFX11-TRUE16-NEXT:    s_mov_b32 s11, s7
+; GFX11-TRUE16-NEXT:    s_waitcnt lgkmcnt(0)
+; GFX11-TRUE16-NEXT:    s_mov_b32 s8, s2
+; GFX11-TRUE16-NEXT:    s_mov_b32 s9, s3
+; GFX11-TRUE16-NEXT:    s_mov_b32 s4, s0
+; GFX11-TRUE16-NEXT:    buffer_load_u16 v0, off, s[8:11], 0
+; GFX11-TRUE16-NEXT:    s_mov_b32 s5, s1
+; GFX11-TRUE16-NEXT:    s_waitcnt vmcnt(0)
+; GFX11-TRUE16-NEXT:    v_cvt_f32_f16_e32 v0, v0.l
+; GFX11-TRUE16-NEXT:    buffer_store_b32 v0, off, s[4:7], 0
+; GFX11-TRUE16-NEXT:    s_nop 0
+; GFX11-TRUE16-NEXT:    s_sendmsg sendmsg(MSG_DEALLOC_VGPRS)
+; GFX11-TRUE16-NEXT:    s_endpgm
+;
+; GFX11-FAKE16-LABEL: test_convert_fp16_to_fp32:
+; GFX11-FAKE16:       ; %bb.0:
+; GFX11-FAKE16-NEXT:    s_load_b128 s[0:3], s[2:3], 0x24
+; GFX11-FAKE16-NEXT:    s_mov_b32 s6, -1
+; GFX11-FAKE16-NEXT:    s_mov_b32 s7, 0x31016000
+; GFX11-FAKE16-NEXT:    s_mov_b32 s10, s6
+; GFX11-FAKE16-NEXT:    s_mov_b32 s11, s7
+; GFX11-FAKE16-NEXT:    s_waitcnt lgkmcnt(0)
+; GFX11-FAKE16-NEXT:    s_mov_b32 s8, s2
+; GFX11-FAKE16-NEXT:    s_mov_b32 s9, s3
+; GFX11-FAKE16-NEXT:    s_mov_b32 s4, s0
+; GFX11-FAKE16-NEXT:    buffer_load_u16 v0, off, s[8:11], 0
+; GFX11-FAKE16-NEXT:    s_mov_b32 s5, s1
+; GFX11-FAKE16-NEXT:    s_waitcnt vmcnt(0)
+; GFX11-FAKE16-NEXT:    v_cvt_f32_f16_e32 v0, v0
+; GFX11-FAKE16-NEXT:    buffer_store_b32 v0, off, s[4:7], 0
+; GFX11-FAKE16-NEXT:    s_nop 0
+; GFX11-FAKE16-NEXT:    s_sendmsg sendmsg(MSG_DEALLOC_VGPRS)
+; GFX11-FAKE16-NEXT:    s_endpgm
----------------
kosarev wrote:

Do these and all other TRUE16/FAKE16 outputs differ? If not, the RUN lines should do `-check-prefixes=GFX11,GFX11-TRUE16/FAKE16`.

https://github.com/llvm/llvm-project/pull/101678