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llvm-6502/test/CodeGen/R600/fp_to_sint.ll
Chandler Carruth 69359ed45b [SDAG] When performing post-legalize DAG combining, run the legalizer 
over each node in the worklist prior to combining.

This allows the combiner to produce new nodes which need to go back
through legalization. This is particularly useful when generating
operands to target specific nodes in a post-legalize DAG combine where
the operands are significantly easier to express as pre-legalized
operations. My immediate use case will be PSHUFB formation where we need
to build a constant shuffle mask with a build_vector node.

This also refactors the relevant functionality in the legalizer to
support this, and updates relevant tests. I've spoken to the R600 folks
and these changes look like improvements to them. The avx512 change
needs to be investigated, I suspect there is a disagreement between the
legalizer and the DAG combiner there, but it seems a minor issue so
leaving it to be re-evaluated after this patch.

Differential Revision: http://reviews.llvm.org/D4564

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@214020 91177308-0d34-0410-b5e6-96231b3b80d8
2014-07-26 05:49:40 +00:00

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; RUN: llc -march=r600 -mcpu=redwood < %s | FileCheck %s --check-prefix=EG --check-prefix=FUNC
; RUN: llc -march=r600 -mcpu=SI -verify-machineinstrs < %s | FileCheck %s --check-prefix=SI --check-prefix=FUNC
; FUNC-LABEL: @fp_to_sint_v2i32
; EG: FLT_TO_INT {{\** *}}T{{[0-9]+\.[XYZW], PV\.[XYZW]}}
; EG: FLT_TO_INT {{\** *}}T{{[0-9]+\.[XYZW], PV\.[XYZW]}}
; SI: V_CVT_I32_F32_e32
; SI: V_CVT_I32_F32_e32
define void @fp_to_sint_v2i32(<2 x i32> addrspace(1)* %out, <2 x float> %in) {
%result = fptosi <2 x float> %in to <2 x i32>
store <2 x i32> %result, <2 x i32> addrspace(1)* %out
ret void
}
; FUNC-LABEL: @fp_to_sint_v4i32
; EG: FLT_TO_INT {{\** *}}T{{[0-9]+\.[XYZW], PV\.[XYZW]}}
; EG: FLT_TO_INT {{\** *}}T{{[0-9]+\.[XYZW]}}
; EG: FLT_TO_INT {{\** *}}T{{[0-9]+\.[XYZW], PV\.[XYZW]}}
; EG: FLT_TO_INT {{\** *}}T{{[0-9]+\.[XYZW], PV\.[XYZW]}}
; SI: V_CVT_I32_F32_e32
; SI: V_CVT_I32_F32_e32
; SI: V_CVT_I32_F32_e32
; SI: V_CVT_I32_F32_e32
define void @fp_to_sint_v4i32(<4 x i32> addrspace(1)* %out, <4 x float> addrspace(1)* %in) {
%value = load <4 x float> addrspace(1) * %in
%result = fptosi <4 x float> %value to <4 x i32>
store <4 x i32> %result, <4 x i32> addrspace(1)* %out
ret void
}
; FUNC-LABEL: @fp_to_sint_i64
; EG-DAG: AND_INT
; EG-DAG: LSHR
; EG-DAG: SUB_INT
; EG-DAG: AND_INT
; EG-DAG: ASHR
; EG-DAG: AND_INT
; EG-DAG: OR_INT
; EG-DAG: SUB_INT
; EG-DAG: LSHL
; EG-DAG: LSHL
; EG-DAG: SUB_INT
; EG-DAG: LSHR
; EG-DAG: LSHR
; EG-DAG: SETGT_UINT
; EG-DAG: SETGT_INT
; EG-DAG: XOR_INT
; EG-DAG: XOR_INT
; EG: SUB_INT
; EG-DAG: SUB_INT
; EG-DAG: CNDE_INT
; EG-DAG: CNDE_INT
; Check that the compiler doesn't crash with a "cannot select" error
; SI: S_ENDPGM
define void @fp_to_sint_i64 (i64 addrspace(1)* %out, float %in) {
entry:
%0 = fptosi float %in to i64
store i64 %0, i64 addrspace(1)* %out
ret void
}
; FUNC: @fp_to_sint_v2i64
; EG-DAG: AND_INT
; EG-DAG: LSHR
; EG-DAG: SUB_INT
; EG-DAG: AND_INT
; EG-DAG: ASHR
; EG-DAG: AND_INT
; EG-DAG: OR_INT
; EG-DAG: SUB_INT
; EG-DAG: LSHL
; EG-DAG: LSHL
; EG-DAG: SUB_INT
; EG-DAG: LSHR
; EG-DAG: LSHR
; EG-DAG: SETGT_UINT
; EG-DAG: SETGT_INT
; EG-DAG: XOR_INT
; EG-DAG: XOR_INT
; EG-DAG: SUB_INT
; EG-DAG: SUB_INT
; EG-DAG: CNDE_INT
; EG-DAG: CNDE_INT
; EG-DAG: AND_INT
; EG-DAG: LSHR
; EG-DAG: SUB_INT
; EG-DAG: AND_INT
; EG-DAG: ASHR
; EG-DAG: AND_INT
; EG-DAG: OR_INT
; EG-DAG: SUB_INT
; EG-DAG: LSHL
; EG-DAG: LSHL
; EG-DAG: SUB_INT
; EG-DAG: LSHR
; EG-DAG: LSHR
; EG-DAG: SETGT_UINT
; EG-DAG: SETGT_INT
; EG-DAG: XOR_INT
; EG-DAG: XOR_INT
; EG-DAG: SUB_INT
; EG-DAG: SUB_INT
; EG-DAG: CNDE_INT
; EG-DAG: CNDE_INT
; SI: S_ENDPGM
define void @fp_to_sint_v2i64(<2 x i64> addrspace(1)* %out, <2 x float> %x) {
%conv = fptosi <2 x float> %x to <2 x i64>
store <2 x i64> %conv, <2 x i64> addrspace(1)* %out
ret void
}
; FUNC: @fp_to_sint_v4i64
; EG-DAG: AND_INT
; EG-DAG: LSHR
; EG-DAG: SUB_INT
; EG-DAG: AND_INT
; EG-DAG: ASHR
; EG-DAG: AND_INT
; EG-DAG: OR_INT
; EG-DAG: SUB_INT
; EG-DAG: LSHL
; EG-DAG: LSHL
; EG-DAG: SUB_INT
; EG-DAG: LSHR
; EG-DAG: LSHR
; EG-DAG: SETGT_UINT
; EG-DAG: SETGT_INT
; EG-DAG: XOR_INT
; EG-DAG: XOR_INT
; EG-DAG: SUB_INT
; EG-DAG: SUB_INT
; EG-DAG: CNDE_INT
; EG-DAG: CNDE_INT
; EG-DAG: AND_INT
; EG-DAG: LSHR
; EG-DAG: SUB_INT
; EG-DAG: AND_INT
; EG-DAG: ASHR
; EG-DAG: AND_INT
; EG-DAG: OR_INT
; EG-DAG: SUB_INT
; EG-DAG: LSHL
; EG-DAG: LSHL
; EG-DAG: SUB_INT
; EG-DAG: LSHR
; EG-DAG: LSHR
; EG-DAG: SETGT_UINT
; EG-DAG: SETGT_INT
; EG-DAG: XOR_INT
; EG-DAG: XOR_INT
; EG-DAG: SUB_INT
; EG-DAG: SUB_INT
; EG-DAG: CNDE_INT
; EG-DAG: CNDE_INT
; EG-DAG: AND_INT
; EG-DAG: LSHR
; EG-DAG: SUB_INT
; EG-DAG: AND_INT
; EG-DAG: ASHR
; EG-DAG: AND_INT
; EG-DAG: OR_INT
; EG-DAG: SUB_INT
; EG-DAG: LSHL
; EG-DAG: LSHL
; EG-DAG: SUB_INT
; EG-DAG: LSHR
; EG-DAG: LSHR
; EG-DAG: SETGT_UINT
; EG-DAG: SETGT_INT
; EG-DAG: XOR_INT
; EG-DAG: XOR_INT
; EG-DAG: SUB_INT
; EG-DAG: SUB_INT
; EG-DAG: CNDE_INT
; EG-DAG: CNDE_INT
; EG-DAG: AND_INT
; EG-DAG: LSHR
; EG-DAG: SUB_INT
; EG-DAG: AND_INT
; EG-DAG: ASHR
; EG-DAG: AND_INT
; EG-DAG: OR_INT
; EG-DAG: SUB_INT
; EG-DAG: LSHL
; EG-DAG: LSHL
; EG-DAG: SUB_INT
; EG-DAG: LSHR
; EG-DAG: LSHR
; EG-DAG: SETGT_UINT
; EG-DAG: SETGT_INT
; EG-DAG: XOR_INT
; EG-DAG: XOR_INT
; EG-DAG: SUB_INT
; EG-DAG: SUB_INT
; EG-DAG: CNDE_INT
; EG-DAG: CNDE_INT
; SI: S_ENDPGM
define void @fp_to_sint_v4i64(<4 x i64> addrspace(1)* %out, <4 x float> %x) {
%conv = fptosi <4 x float> %x to <4 x i64>
store <4 x i64> %conv, <4 x i64> addrspace(1)* %out
ret void
}
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