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* [gcc r10-8793] aarch64: Do not alter value on a force_reg returned rtx expanding __jcvt
@ 2020-09-24 9:31 Andrea Corallo
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From: Andrea Corallo @ 2020-09-24 9:31 UTC (permalink / raw)
To: gcc-cvs
https://gcc.gnu.org/g:aa47c987340946034fe9e32832bd1eb49d6287f3
commit r10-8793-gaa47c987340946034fe9e32832bd1eb49d6287f3
Author: Andrea Corallo <andrea.corallo@arm.com>
Date: Thu Sep 17 17:17:52 2020 +0100
aarch64: Do not alter value on a force_reg returned rtx expanding __jcvt
2020-09-17 Andrea Corallo <andrea.corallo@arm.com>
* config/aarch64/aarch64-builtins.c
(aarch64_general_expand_builtin): Use expand machinery not to
alter the value of an rtx returned by force_reg.
(cherry picked from commit 2c62952f8160bdc8d4111edb34a4bc75096c1e05)
Diff:
---
gcc/config/aarch64/aarch64-builtins.c | 16 ++++++++--------
1 file changed, 8 insertions(+), 8 deletions(-)
diff --git a/gcc/config/aarch64/aarch64-builtins.c b/gcc/config/aarch64/aarch64-builtins.c
index 8407a34b594..b8d301f00e2 100644
--- a/gcc/config/aarch64/aarch64-builtins.c
+++ b/gcc/config/aarch64/aarch64-builtins.c
@@ -1976,14 +1976,14 @@ aarch64_general_expand_builtin (unsigned int fcode, tree exp, rtx target,
return target;
case AARCH64_JSCVT:
- arg0 = CALL_EXPR_ARG (exp, 0);
- op0 = force_reg (DFmode, expand_normal (arg0));
- if (!target)
- target = gen_reg_rtx (SImode);
- else
- target = force_reg (SImode, target);
- emit_insn (GEN_FCN (CODE_FOR_aarch64_fjcvtzs) (target, op0));
- return target;
+ {
+ expand_operand ops[2];
+ create_output_operand (&ops[0], target, SImode);
+ op0 = expand_normal (CALL_EXPR_ARG (exp, 0));
+ create_input_operand (&ops[1], op0, DFmode);
+ expand_insn (CODE_FOR_aarch64_fjcvtzs, 2, ops);
+ return ops[0].value;
+ }
case AARCH64_SIMD_BUILTIN_FCMLA_LANEQ0_V2SF:
case AARCH64_SIMD_BUILTIN_FCMLA_LANEQ90_V2SF:
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