derek.holloway
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41 lines
1.6 KiB
LLVM
41 lines
1.6 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --version 6
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; RUN: llc < %s -mtriple=nvptx64 -mcpu=sm_75 -mattr=+ptx78 | FileCheck %s
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; RUN: %if ptxas-sm_75 && ptxas-isa-7.8 %{ llc < %s -mtriple=nvptx64 -mcpu=sm_75 -mattr=+ptx78 | %ptxas-verify -arch=sm_75 %}
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declare i32 @llvm.nvvm.movmatrix.sync.aligned.m8n8.trans.b16(i32)
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; CHECK-LABEL: test_movmatrix
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define i32 @test_movmatrix(i32 %a) {
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; CHECK-LABEL: test_movmatrix(
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; CHECK: {
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; CHECK-NEXT: .reg .b32 %r<3>;
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; CHECK-EMPTY:
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; CHECK-NEXT: // %bb.0:
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; CHECK-NEXT: ld.param.b32 %r1, [test_movmatrix_param_0];
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; CHECK-NEXT: movmatrix.sync.aligned.m8n8.trans.b16 %r2, %r1;
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; CHECK-NEXT: st.param.b32 [func_retval0], %r2;
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; CHECK-NEXT: ret;
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%d = call i32 @llvm.nvvm.movmatrix.sync.aligned.m8n8.trans.b16(i32 %a)
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ret i32 %d
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}
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; Test that LLVM does not CSE two movmatrix calls with the same input,
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; as the result depends on values from other threads in the warp.
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define i32 @test_movmatrix_cse(i32 %a) {
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; CHECK-LABEL: test_movmatrix_cse(
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; CHECK: {
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; CHECK-NEXT: .reg .b32 %r<5>;
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; CHECK-EMPTY:
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; CHECK-NEXT: // %bb.0:
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; CHECK-NEXT: ld.param.b32 %r1, [test_movmatrix_cse_param_0];
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; CHECK-NEXT: movmatrix.sync.aligned.m8n8.trans.b16 %r2, %r1;
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; CHECK-NEXT: movmatrix.sync.aligned.m8n8.trans.b16 %r3, %r1;
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; CHECK-NEXT: add.s32 %r4, %r2, %r3;
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; CHECK-NEXT: st.param.b32 [func_retval0], %r4;
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; CHECK-NEXT: ret;
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%d1 = call i32 @llvm.nvvm.movmatrix.sync.aligned.m8n8.trans.b16(i32 %a)
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%d2 = call i32 @llvm.nvvm.movmatrix.sync.aligned.m8n8.trans.b16(i32 %a)
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%sum = add i32 %d1, %d2
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ret i32 %sum
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}
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