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[NFC][AMDGPU] Add an IR test for v_sqrt_bf16 #149629

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Merged
merged 2 commits into from
Jul 21, 2025
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[NFC][AMDGPU] Add an IR test for v_sqrt_bf16 #149629

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[NFC][AMDGPU] Add an IR test for `v_sqrt_bf16`
shiltian Jul 19, 2025
fa6d126
Merge branch 'main' into users/shiltian/add-test-for-v_sqrt_bf16
shiltian Jul 21, 2025
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22 changes: 22 additions & 0 deletions llvm/test/CodeGen/AMDGPU/bf16-math.ll
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Original file line number Diff line number Diff line change
Expand Up @@ -2,6 +2,27 @@
; RUN: llc -mtriple=amdgcn -mcpu=gfx1250 < %s | FileCheck --check-prefix=GCN %s

; TODO: Add global-isel when it can support bf16
define amdgpu_ps void @llvm_sqrt_bf16_v(ptr addrspace(1) %out, bfloat %src) {
; GCN-LABEL: llvm_sqrt_bf16_v:
; GCN: ; %bb.0:
; GCN-NEXT: v_sqrt_bf16_e32 v2, v2
; GCN-NEXT: global_store_b16 v[0:1], v2, off
; GCN-NEXT: s_endpgm
%sqrt = call bfloat @llvm.sqrt.bf16(bfloat %src)
store bfloat %sqrt, ptr addrspace(1) %out, align 2
ret void
}

define amdgpu_ps void @llvm_sqrt_bf16_s(ptr addrspace(1) %out, bfloat inreg %src) {
; GCN-LABEL: llvm_sqrt_bf16_s:
; GCN: ; %bb.0:
; GCN-NEXT: v_sqrt_bf16_e32 v2, s0
; GCN-NEXT: global_store_b16 v[0:1], v2, off
; GCN-NEXT: s_endpgm
%sqrt = call bfloat @llvm.sqrt.bf16(bfloat %src)
store bfloat %sqrt, ptr addrspace(1) %out, align 2
ret void
}

define amdgpu_ps void @llvm_log2_bf16_v(ptr addrspace(1) %out, bfloat %src) {
; GCN-LABEL: llvm_log2_bf16_v:
Expand Down Expand Up @@ -47,5 +68,6 @@ define amdgpu_ps void @llvm_exp2_bf16_s(ptr addrspace(1) %out, bfloat inreg %src
ret void
}

declare bfloat @llvm.sqrt.bf16(bfloat)
declare bfloat @llvm.log2.bf16(bfloat)
declare bfloat @llvm.exp2.bf16(bfloat)
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