derek.holloway
7502bf64a4
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60 lines
2.2 KiB
LLVM
60 lines
2.2 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --version 5
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; RUN: llc < %s | FileCheck %s
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target triple = "nvptx64-nvidia-cuda"
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@global_smem = external addrspace(3) global [0 x i8], align 16
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;; Confirm the mov.b64 of global_smem is CSE'd. We need to make things a bit
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;; complex with a loop to make this interesting.
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define i32 @test_mov_sym(i32 %offset1, i32 %offset2, i1 %cond) {
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; CHECK-LABEL: test_mov_sym(
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; CHECK: {
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; CHECK-NEXT: .reg .pred %p<4>;
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; CHECK-NEXT: .reg .b16 %rs<3>;
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; CHECK-NEXT: .reg .b32 %r<5>;
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; CHECK-NEXT: .reg .b64 %rd<6>;
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; CHECK-EMPTY:
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; CHECK-NEXT: // %bb.0: // %entry
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; CHECK-NEXT: ld.param.b8 %rs1, [test_mov_sym_param_2];
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; CHECK-NEXT: and.b16 %rs2, %rs1, 1;
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; CHECK-NEXT: setp.ne.b16 %p1, %rs2, 0;
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; CHECK-NEXT: ld.param.b32 %r1, [test_mov_sym_param_0];
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; CHECK-NEXT: cvt.s64.s32 %rd1, %r1;
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; CHECK-NEXT: mov.b64 %rd2, global_smem;
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; CHECK-NEXT: add.s64 %rd3, %rd2, %rd1;
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; CHECK-NEXT: ld.shared.b32 %r4, [%rd3];
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; CHECK-NEXT: not.pred %p2, %p1;
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; CHECK-NEXT: @%p2 bra $L__BB0_4;
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; CHECK-NEXT: // %bb.1: // %if1.preheader
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; CHECK-NEXT: ld.param.b32 %r2, [test_mov_sym_param_1];
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; CHECK-NEXT: setp.ne.b32 %p3, %r1, %r2;
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; CHECK-NEXT: $L__BB0_2: // %if1
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; CHECK-NEXT: // =>This Inner Loop Header: Depth=1
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; CHECK-NEXT: @%p3 bra $L__BB0_2;
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; CHECK-NEXT: // %bb.3: // %if2
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; CHECK-NEXT: cvt.s64.s32 %rd4, %r2;
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; CHECK-NEXT: add.s64 %rd5, %rd2, %rd4;
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; CHECK-NEXT: ld.shared.b32 %r3, [%rd5];
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; CHECK-NEXT: add.s32 %r4, %r4, %r3;
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; CHECK-NEXT: $L__BB0_4: // %end
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; CHECK-NEXT: st.param.b32 [func_retval0], %r4;
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; CHECK-NEXT: ret;
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entry:
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%gep = getelementptr inbounds i8, ptr addrspace(3) @global_smem, i32 %offset1
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%val = load i32, ptr addrspace(3) %gep
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br i1 %cond, label %if1, label %end
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if1:
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%cond2 = icmp eq i32 %offset1, %offset2
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br i1 %cond2, label %if2, label %if1
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if2:
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%gep2 = getelementptr inbounds i8, ptr addrspace(3) @global_smem, i32 %offset2
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%val2 = load i32, ptr addrspace(3) %gep2
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%add = add i32 %val, %val2
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br label %end
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end:
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%ret = phi i32 [ %add, %if2 ], [ %val, %entry ]
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ret i32 %ret
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}
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