derek.holloway
7502bf64a4
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49 lines
1.4 KiB
LLVM
49 lines
1.4 KiB
LLVM
; RUN: opt < %s -passes=slsr,nary-reassociate -S | FileCheck %s
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; RUN: opt < %s -passes=slsr -S | opt -passes='nary-reassociate' -S | FileCheck %s
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; RUN: llc < %s -mtriple=nvptx64 -mcpu=sm_20 | FileCheck %s --check-prefix=PTX
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target datalayout = "e-i64:64-v16:16-v32:32-n16:32:64"
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; foo((a + b) + c);
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; foo((a + b * 2) + c);
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; foo((a + b * 3) + c);
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; =>
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; abc = (a + b) + c;
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; foo(abc);
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; ab2c = abc + b;
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; foo(ab2c);
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; ab3c = ab2c + b;
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; foo(ab3c);
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define void @nary_reassociate_after_slsr(i32 %a, i32 %b, i32 %c) {
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; CHECK-LABEL: @nary_reassociate_after_slsr(
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; PTX-LABEL: .visible .func nary_reassociate_after_slsr(
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; PTX: ld.param.b32 [[b:%r[0-9]+]], [nary_reassociate_after_slsr_param_1];
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%ab = add i32 %a, %b
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%abc = add i32 %ab, %c
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call void @foo(i32 %abc)
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; CHECK: call void @foo(i32 %abc)
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; PTX: st.param.b32 [param0], [[abc:%r[0-9]+]];
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%b2 = shl i32 %b, 1
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%ab2 = add i32 %a, %b2
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%ab2c = add i32 %ab2, %c
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; CHECK-NEXT: %ab2c = add i32 %abc, %b
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; PTX: add.s32 [[ab2c:%r[0-9]+]], [[abc]], [[b]]
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call void @foo(i32 %ab2c)
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; CHECK-NEXT: call void @foo(i32 %ab2c)
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; PTX: st.param.b32 [param0], [[ab2c]];
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%b3 = mul i32 %b, 3
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%ab3 = add i32 %a, %b3
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%ab3c = add i32 %ab3, %c
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; CHECK-NEXT: %ab3c = add i32 %ab2c, %b
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; PTX: add.s32 [[ab3c:%r[0-9]+]], [[ab2c]], [[b]]
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call void @foo(i32 %ab3c)
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; CHECK-NEXT: call void @foo(i32 %ab3c)
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; PTX: st.param.b32 [param0], [[ab3c]];
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ret void
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}
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declare void @foo(i32)
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