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* [gcc(refs/users/ppalka/heads/integer_class_type)] aarch64: Fix BE SVE mode punning involving floats
@ 2020-01-16 20:36 Patrick Palka
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From: Patrick Palka @ 2020-01-16 20:36 UTC (permalink / raw)
To: gcc-cvs
https://gcc.gnu.org/g:5c06093ce90ac3fc1efe89c1897ea19b805cdd3d
commit 5c06093ce90ac3fc1efe89c1897ea19b805cdd3d
Author: Richard Sandiford <richard.sandiford@arm.com>
Date: Wed Jan 15 16:52:04 2020 +0000
aarch64: Fix BE SVE mode punning involving floats
The patterns used by aarch64_split_sve_subreg_move only support
integer modes, so if the widest mode is a float, we should get
its integer equivalent.
Fixes gcc.target/aarch64/sel_3.c for big-endian targets.
2020-01-16 Richard Sandiford <richard.sandiford@arm.com>
gcc/
* config/aarch64/aarch64.c (aarch64_split_sve_subreg_move): Apply
aarch64_sve_int_mode to each mode.
Diff:
---
gcc/ChangeLog | 5 +++++
gcc/config/aarch64/aarch64.c | 4 ++--
2 files changed, 7 insertions(+), 2 deletions(-)
diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 4a1c1ee..0642993 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,8 @@
+2020-01-16 Richard Sandiford <richard.sandiford@arm.com>
+
+ * config/aarch64/aarch64.c (aarch64_split_sve_subreg_move): Apply
+ aarch64_sve_int_mode to each mode.
+
2020-01-15 David Malcolm <dmalcolm@redhat.com>
* doc/analyzer.texi (Overview): Add note about
diff --git a/gcc/config/aarch64/aarch64.c b/gcc/config/aarch64/aarch64.c
index ac89cc1..600a238 100644
--- a/gcc/config/aarch64/aarch64.c
+++ b/gcc/config/aarch64/aarch64.c
@@ -4827,8 +4827,8 @@ aarch64_split_sve_subreg_move (rtx dest, rtx ptrue, rtx src)
/* Decide which REV operation we need. The mode with wider elements
determines the mode of the operands and the mode with the narrower
elements determines the reverse width. */
- machine_mode mode_with_wider_elts = GET_MODE (dest);
- machine_mode mode_with_narrower_elts = GET_MODE (src);
+ machine_mode mode_with_wider_elts = aarch64_sve_int_mode (GET_MODE (dest));
+ machine_mode mode_with_narrower_elts = aarch64_sve_int_mode (GET_MODE (src));
if (GET_MODE_UNIT_SIZE (mode_with_wider_elts)
< GET_MODE_UNIT_SIZE (mode_with_narrower_elts))
std::swap (mode_with_wider_elts, mode_with_narrower_elts);
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