llvm-6502/test/CodeGen/R600/select64.ll
Matt Arsenault b730c3d28d Revert "Revert r212640, "Add trunc (select c, a, b) -> select c (trunc a), (trunc b) combine.""
Don't try to convert the select condition type.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@212750 91177308-0d34-0410-b5e6-96231b3b80d8
2014-07-10 18:21:04 +00:00

51 lines
1.6 KiB
LLVM

; RUN: llc < %s -march=r600 -mcpu=SI -verify-machineinstrs | FileCheck %s
; CHECK-LABEL: @select0
; i64 select should be split into two i32 selects, and we shouldn't need
; to use a shfit to extract the hi dword of the input.
; CHECK-NOT: S_LSHR_B64
; CHECK: V_CNDMASK
; CHECK: V_CNDMASK
define void @select0(i64 addrspace(1)* %out, i32 %cond, i64 %in) {
entry:
%0 = icmp ugt i32 %cond, 5
%1 = select i1 %0, i64 0, i64 %in
store i64 %1, i64 addrspace(1)* %out
ret void
}
; CHECK-LABEL: @select_trunc_i64
; CHECK: V_CNDMASK_B32
; CHECK-NOT: V_CNDMASK_B32
define void @select_trunc_i64(i32 addrspace(1)* %out, i32 %cond, i64 %in) nounwind {
%cmp = icmp ugt i32 %cond, 5
%sel = select i1 %cmp, i64 0, i64 %in
%trunc = trunc i64 %sel to i32
store i32 %trunc, i32 addrspace(1)* %out, align 4
ret void
}
; CHECK-LABEL: @select_trunc_i64_2
; CHECK: V_CNDMASK_B32
; CHECK-NOT: V_CNDMASK_B32
define void @select_trunc_i64_2(i32 addrspace(1)* %out, i32 %cond, i64 %a, i64 %b) nounwind {
%cmp = icmp ugt i32 %cond, 5
%sel = select i1 %cmp, i64 %a, i64 %b
%trunc = trunc i64 %sel to i32
store i32 %trunc, i32 addrspace(1)* %out, align 4
ret void
}
; CHECK-LABEL: @v_select_trunc_i64_2
; CHECK: V_CNDMASK_B32
; CHECK-NOT: V_CNDMASK_B32
define void @v_select_trunc_i64_2(i32 addrspace(1)* %out, i32 %cond, i64 addrspace(1)* %aptr, i64 addrspace(1)* %bptr) nounwind {
%cmp = icmp ugt i32 %cond, 5
%a = load i64 addrspace(1)* %aptr, align 8
%b = load i64 addrspace(1)* %bptr, align 8
%sel = select i1 %cmp, i64 %a, i64 %b
%trunc = trunc i64 %sel to i32
store i32 %trunc, i32 addrspace(1)* %out, align 4
ret void
}