llvm-6502/test/CodeGen/R600/max3.ll
Matt Arsenault 24e874a1dd R600/SI: Combine min3/max3 instructions
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@222032 91177308-0d34-0410-b5e6-96231b3b80d8
2014-11-14 20:08:52 +00:00

42 lines
1.8 KiB
LLVM

; RUN: llc -march=r600 -mcpu=SI < %s | FileCheck -check-prefix=SI -check-prefix=FUNC %s
declare i32 @llvm.r600.read.tidig.x() nounwind readnone
; FUNC-LABEL: @v_test_imax3_sgt_i32
; SI: v_max3_i32
define void @v_test_imax3_sgt_i32(i32 addrspace(1)* %out, i32 addrspace(1)* %aptr, i32 addrspace(1)* %bptr, i32 addrspace(1)* %cptr) nounwind {
%tid = call i32 @llvm.r600.read.tidig.x() nounwind readnone
%gep0 = getelementptr i32 addrspace(1)* %aptr, i32 %tid
%gep1 = getelementptr i32 addrspace(1)* %bptr, i32 %tid
%gep2 = getelementptr i32 addrspace(1)* %cptr, i32 %tid
%outgep = getelementptr i32 addrspace(1)* %out, i32 %tid
%a = load i32 addrspace(1)* %gep0, align 4
%b = load i32 addrspace(1)* %gep1, align 4
%c = load i32 addrspace(1)* %gep2, align 4
%icmp0 = icmp sgt i32 %a, %b
%i0 = select i1 %icmp0, i32 %a, i32 %b
%icmp1 = icmp sgt i32 %i0, %c
%i1 = select i1 %icmp1, i32 %i0, i32 %c
store i32 %i1, i32 addrspace(1)* %out, align 4
ret void
}
; FUNC-LABEL: @v_test_umax3_ugt_i32
; SI: v_max3_u32
define void @v_test_umax3_ugt_i32(i32 addrspace(1)* %out, i32 addrspace(1)* %aptr, i32 addrspace(1)* %bptr, i32 addrspace(1)* %cptr) nounwind {
%tid = call i32 @llvm.r600.read.tidig.x() nounwind readnone
%gep0 = getelementptr i32 addrspace(1)* %aptr, i32 %tid
%gep1 = getelementptr i32 addrspace(1)* %bptr, i32 %tid
%gep2 = getelementptr i32 addrspace(1)* %cptr, i32 %tid
%outgep = getelementptr i32 addrspace(1)* %out, i32 %tid
%a = load i32 addrspace(1)* %gep0, align 4
%b = load i32 addrspace(1)* %gep1, align 4
%c = load i32 addrspace(1)* %gep2, align 4
%icmp0 = icmp ugt i32 %a, %b
%i0 = select i1 %icmp0, i32 %a, i32 %b
%icmp1 = icmp ugt i32 %i0, %c
%i1 = select i1 %icmp1, i32 %i0, i32 %c
store i32 %i1, i32 addrspace(1)* %out, align 4
ret void
}