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| author | Bernhard Schommer <bernhardschommer@gmail.com> | 2020-07-01 15:16:55 +0200 |
|---|---|---|
| committer | Bernhard Schommer <bschommer@users.noreply.github.com> | 2020-07-01 18:07:40 +0200 |
| commit | bb9fa5550d6145344c4ed296ed980cb419e4cb27 (patch) | |
| tree | 2759172d23b022807a471cb10e4ae1b09908189e /powerpc | |
| parent | c94405f67ca18be997974f88ff91c072d8a5c0cb (diff) | |
| download | compcert-kvx-bb9fa5550d6145344c4ed296ed980cb419e4cb27.tar.gz compcert-kvx-bb9fa5550d6145344c4ed296ed980cb419e4cb27.zip | |
Added asserts for constraints of PowerPC builtins
Diffstat (limited to 'powerpc')
| -rw-r--r-- | powerpc/Asmexpand.ml | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/powerpc/Asmexpand.ml b/powerpc/Asmexpand.ml index ce88778c..1854ec16 100644 --- a/powerpc/Asmexpand.ml +++ b/powerpc/Asmexpand.ml @@ -767,6 +767,8 @@ let expand_builtin_inline name args res = emit (Pori (GPR0, GPR0, Cint _0)) (* atomic operations *) | "__builtin_atomic_exchange", [BA (IR a1); BA (IR a2); BA (IR a3)],_ -> + (* Register constraints imposed by Machregs.v *) + assert(a1 = GPR3 && a2 = GPR4 && a3 = GPR5); emit (Plwz (GPR10,Cint _0,a2)); emit (Psync); let lbl = new_label() in @@ -786,6 +788,8 @@ let expand_builtin_inline name args res = emit (Pisync); emit (Pstw (GPR0,Cint _0, a2)) | "__builtin_sync_fetch_and_add", [BA (IR a1); BA(IR a2)], BR (IR res) -> + (* Register constraints imposed by Machregs.v *) + assert (a1 = GPR4 && a2 = GPR5 && res = GPR3); let lbl = new_label() in emit (Psync); emit (Plabel lbl); @@ -795,6 +799,8 @@ let expand_builtin_inline name args res = emit (Pbf (CRbit_2, lbl)); emit (Pisync); | "__builtin_atomic_compare_exchange", [BA (IR dst); BA(IR exp); BA (IR des)], BR (IR res) -> + (* Register constraints imposed by Machregs.v *) + assert (dst = GPR4 && exp = GPR5 && des = GPR6 && res = GPR3); let lbls = new_label () and lblneq = new_label () and lblsucc = new_label () in |