* [committed] amdgcn: Disallow TImode vector permute
@ 2023-11-27 13:38 Andrew Stubbs
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From: Andrew Stubbs @ 2023-11-27 13:38 UTC (permalink / raw)
To: gcc-patches
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This fixes an ICE that affects some testsuite compiles that use vector
extensions, but probably not much real code (certainly not for offloading).
Andrew
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amdgcn: Disallow TImode vector permute
We don't support it and it doesn't happen without vector extensions, so
just remove the unhandled case.
Fixes gcc.dg/pr78575.c failure.
gcc/ChangeLog:
* config/gcn/gcn.cc (gcn_vectorize_vec_perm_const): Disallow TImode.
diff --git a/gcc/config/gcn/gcn.cc b/gcc/config/gcn/gcn.cc
index 52c8a0e409c..22d2b6ebf6d 100644
--- a/gcc/config/gcn/gcn.cc
+++ b/gcc/config/gcn/gcn.cc
@@ -5050,7 +5050,9 @@ gcn_vectorize_vec_perm_const (machine_mode vmode, machine_mode op_mode,
rtx dst, rtx src0, rtx src1,
const vec_perm_indices & sel)
{
- if (vmode != op_mode)
+ if (vmode != op_mode
+ || !VECTOR_MODE_P (vmode)
+ || GET_MODE_INNER (vmode) == TImode)
return false;
unsigned int nelt = GET_MODE_NUNITS (vmode);
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2023-11-27 13:38 [committed] amdgcn: Disallow TImode vector permute Andrew Stubbs
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