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[1/19,GCC-8] aarch64: Fix up aarch64_compare_and_swaphi pattern [PR94368]

Message ID fe5c6dec-460f-b5b0-30fe-675ddd344efa@arm.com
State New
Headers show
Series aarch64: Backport outline atomics | expand

Commit Message

Andre Vieira (lists) April 16, 2020, 12:24 p.m. UTC 
gcc/ChangeLog:
2020-04-16  Andre Vieira <andre.simoesdiasvieira@arm.com>

     Backport from mainline.
     2018-07-16  Ramana Radhakrishnan <ramana.radhakrishnan@arm.com>

     * config/aarch64/atomics.md (aarch64_store_execlusive<mode>): Add
     early clobber.
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Patch

diff --git a/gcc/config/aarch64/atomics.md b/gcc/config/aarch64/atomics.md
index 686e39ff2ee5940e9e93d0c2b802b46ff9f2c4e4..fba5ec6db5832a184b0323e62041f9c473761bae 100644
--- a/gcc/config/aarch64/atomics.md
+++ b/gcc/config/aarch64/atomics.md
@@ -530,7 +530,7 @@ 
 )
 
 (define_insn "aarch64_store_exclusive<mode>"
-  [(set (match_operand:SI 0 "register_operand" "=r")
+  [(set (match_operand:SI 0 "register_operand" "=&r")
     (unspec_volatile:SI [(const_int 0)] UNSPECV_SX))
    (set (match_operand:ALLI 1 "aarch64_sync_memory_operand" "=Q")
     (unspec_volatile:ALLI