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authorGravatar xleroy <xleroy@fca1b0fc-160b-0410-b1d3-a4f43f01ea2e>2014-02-23 08:23:10 +0000
committerGravatar xleroy <xleroy@fca1b0fc-160b-0410-b1d3-a4f43f01ea2e>2014-02-23 08:23:10 +0000
commit11db3838a8cbfd09ecca368e87305054832a4719 (patch)
treeb48fb36fe0709ea794ffecbfca92680e3227edc3 /powerpc
parent5af448143e8d548a8d73d8ed613156e331ca0e0b (diff)
In Regalloc, dead code elimination, don't eliminate move operations
that pop the x87 FP stack (var <- FP0). Otherwise, (void) f(); where f returns a float eventually produces a FP stack overflow. git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@2416 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
Diffstat (limited to 'powerpc')
-rw-r--r--powerpc/Machregs.v2
1 files changed, 2 insertions, 0 deletions
diff --git a/powerpc/Machregs.v b/powerpc/Machregs.v
index d057dce..baad496 100644
--- a/powerpc/Machregs.v
+++ b/powerpc/Machregs.v
@@ -105,6 +105,8 @@ Module IndexedMreg <: INDEXED_TYPE.
Qed.
End IndexedMreg.
+Definition is_stack_reg (r: mreg) : bool := false.
+
(** ** Destroyed registers, preferred registers *)
Definition destroyed_by_op (op: operation): list mreg :=