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173ca6da08
This patch extends TableGen language with !cond operator.
Instead of embedding !if inside !if which can get cumbersome,
one can now use !cond.
Below is an example to convert an integer 'x' into a string:
!cond(!lt(x,0) : "Negative",
!eq(x,0) : "Zero",
!eq(x,1) : "One,
1 : "MoreThanOne")
Reviewed By: hfinkel, simon_tatham, greened
Differential Revision: https://reviews.llvm.org/D55758
llvm-svn: 352185
28 lines
647 B
TableGen
28 lines
647 B
TableGen
// RUN: llvm-tblgen %s | FileCheck %s
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// XFAIL: vg_leak
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class S<int s> {
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bits<2> val = !cond(!eq(s, 8): {0, 0},
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!eq(s, 16): 0b01,
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!eq(s, 32): 2,
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!eq(s, 64): {1, 1},
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1 : ?);
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}
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def D8 : S<8>;
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def D16 : S<16>;
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def D32 : S<32>;
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def D64 : S<64>;
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def D128: S<128>;
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// CHECK: def D128
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// CHECK-NEXT: bits<2> val = { ?, ? };
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// CHECK: def D16
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// CHECK-NEXT: bits<2> val = { 0, 1 };
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// CHECK: def D32
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// CHECK-NEXT: bits<2> val = { 1, 0 };
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// CHECK: def D64
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// CHECK-NEXT: bits<2> val = { 1, 1 };
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// CHECK: def D8
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// CHECK-NEXT: bits<2> val = { 0, 0 };
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