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21 lines
727 B
LLVM
21 lines
727 B
LLVM
; RUN: llc < %s -march=r600 -mcpu=redwood | FileCheck %s --check-prefix=EG-CHECK
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; RUN: llc < %s -march=r600 -mcpu=cayman | FileCheck %s --check-prefix=CM-CHECK
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; RUN: llc < %s -march=r600 -mcpu=SI | FileCheck %s --check-prefix=SI-CHECK
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; EG-CHECK: @i32_mad24
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; Signed 24-bit multiply is not supported on pre-Cayman GPUs.
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; EG-CHECK: MULLO_INT
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; CM-CHECK: MULADD_INT24 {{[ *]*}}T{{[0-9].[XYZW]}}, KC0[2].Z, KC0[2].W, KC0[3].X
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; SI-CHECK: V_MAD_I32_I24
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define void @i32_mad24(i32 addrspace(1)* %out, i32 %a, i32 %b, i32 %c) {
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entry:
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%0 = shl i32 %a, 8
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%a_24 = ashr i32 %0, 8
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%1 = shl i32 %b, 8
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%b_24 = ashr i32 %1, 8
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%2 = mul i32 %a_24, %b_24
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%3 = add i32 %2, %c
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store i32 %3, i32 addrspace(1)* %out
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ret void
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}
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