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3b880e33a0
Allow two users of the condition if the other user is also a min/max select. i.e. %c = icmp slt i32 %x, %y %min = select i1 %c, i32 %x, i32 %y %max = select i1 %c, i32 %y, i32 %x git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@269699 91177308-0d34-0410-b5e6-96231b3b80d8
28 lines
1.2 KiB
LLVM
28 lines
1.2 KiB
LLVM
; RUN: llc -march=amdgcn -verify-machineinstrs < %s | FileCheck -check-prefix=SI -check-prefix=FUNC %s
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; RUN: llc -march=amdgcn -mcpu=tonga -verify-machineinstrs < %s | FileCheck -check-prefix=SI -check-prefix=FUNC %s
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; FIXME: This should go in existing select.ll test, except the current testcase there is broken on SI
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; FUNC-LABEL: {{^}}select_i1:
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; SI: v_cndmask_b32
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; SI-NOT: v_cndmask_b32
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define void @select_i1(i1 addrspace(1)* %out, i32 %cond, i1 %a, i1 %b) nounwind {
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%cmp = icmp ugt i32 %cond, 5
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%sel = select i1 %cmp, i1 %a, i1 %b
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store i1 %sel, i1 addrspace(1)* %out, align 4
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ret void
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}
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; FUNC-LABEL: {{^}}s_minmax_i1:
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; SI-DAG: buffer_load_ubyte [[COND:v[0-9]+]], off, s{{\[[0-9]+:[0-9]+\]}}, 0 offset:44
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; SI-DAG: buffer_load_ubyte [[A:v[0-9]+]], off, s{{\[[0-9]+:[0-9]+\]}}, 0 offset:45
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; SI-DAG: buffer_load_ubyte [[B:v[0-9]+]], off, s{{\[[0-9]+:[0-9]+\]}}, 0 offset:46
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; SI: v_cmp_eq_i32_e32 vcc, 1, [[COND]]
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; SI: v_cndmask_b32_e32 v{{[0-9]+}}, [[B]], [[A]]
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define void @s_minmax_i1(i1 addrspace(1)* %out, i1 zeroext %cond, i1 zeroext %a, i1 zeroext %b) nounwind {
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%cmp = icmp slt i1 %cond, false
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%sel = select i1 %cmp, i1 %a, i1 %b
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store i1 %sel, i1 addrspace(1)* %out, align 4
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ret void
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}
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