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* [gcc/devel/omp/gcc-12] openmp-simd-clone: Match shift types
@ 2022-08-03 9:30 Andrew Stubbs
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From: Andrew Stubbs @ 2022-08-03 9:30 UTC (permalink / raw)
To: gcc-cvs
https://gcc.gnu.org/g:2c710128b780ba92b8d63e43a5888f947277de60
commit 2c710128b780ba92b8d63e43a5888f947277de60
Author: Andrew Stubbs <ams@codesourcery.com>
Date: Tue Jul 19 11:16:09 2022 +0100
openmp-simd-clone: Match shift types
Ensure that both parameters to vector shifts use the same mode. This is most
important for amdgcn where the masks are DImode.
gcc/ChangeLog:
* omp-simd-clone.cc (simd_clone_adjust): Convert shift_cnt to match
the mask type.
Co-authored-by: Jakub Jelinek <jakub@redhat.com>
(cherry picked from commit b64e937ccde286278743e8fdffea494faa46c214)
Diff:
---
gcc/ChangeLog.omp | 6 ++++++
gcc/omp-simd-clone.cc | 10 +++++++++-
2 files changed, 15 insertions(+), 1 deletion(-)
diff --git a/gcc/ChangeLog.omp b/gcc/ChangeLog.omp
index a8ba3b5e78b..08ab26da8ca 100644
--- a/gcc/ChangeLog.omp
+++ b/gcc/ChangeLog.omp
@@ -1,3 +1,9 @@
+2022-08-02 Andrew Stubbs <ams@codesourcery.com>
+
+ Backport from mainline:
+ * omp-simd-clone.cc (simd_clone_adjust): Convert shift_cnt to match
+ the mask type.
+
2022-08-02 Andrew Stubbs <ams@codesourcery.com>
Backport from mainline:
diff --git a/gcc/omp-simd-clone.cc b/gcc/omp-simd-clone.cc
index 04fe03cde5f..6a9351c2102 100644
--- a/gcc/omp-simd-clone.cc
+++ b/gcc/omp-simd-clone.cc
@@ -1305,8 +1305,16 @@ simd_clone_adjust (struct cgraph_node *node)
build_int_cst (TREE_TYPE (iter1), c));
gsi_insert_after (&gsi, g, GSI_CONTINUE_LINKING);
}
+ tree shift_cnt_conv = shift_cnt;
+ if (!useless_type_conversion_p (TREE_TYPE (mask),
+ TREE_TYPE (shift_cnt)))
+ {
+ shift_cnt_conv = make_ssa_name (TREE_TYPE (mask));
+ g = gimple_build_assign (shift_cnt_conv, NOP_EXPR, shift_cnt);
+ gsi_insert_after (&gsi, g, GSI_CONTINUE_LINKING);
+ }
g = gimple_build_assign (make_ssa_name (TREE_TYPE (mask)),
- RSHIFT_EXPR, mask, shift_cnt);
+ RSHIFT_EXPR, mask, shift_cnt_conv);
gsi_insert_after (&gsi, g, GSI_CONTINUE_LINKING);
mask = gimple_assign_lhs (g);
g = gimple_build_assign (make_ssa_name (TREE_TYPE (mask)),
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