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| author | Michal Terepeta <michal.terepeta@gmail.com> | 2018-11-02 14:27:03 -0400 |
|---|---|---|
| committer | Ben Gamari <ben@smart-cactus.org> | 2018-11-02 17:15:01 -0400 |
| commit | 2c959a1894311e59cd2fd469c1967491c1e488f3 (patch) | |
| tree | dc396ec23115f4b6a10b8295bfa94b865ff02efb /includes | |
| parent | 6bb8aaa3b4fcebf8f0de2f81f00dcc20b857c4f5 (diff) | |
| download | haskell-2c959a1894311e59cd2fd469c1967491c1e488f3.tar.gz | |
Add Int8# and Word8#
This is the first step of implementing:
https://github.com/ghc-proposals/ghc-proposals/pull/74
The main highlights/changes:
primops.txt.pp gets two new sections for two new primitive types for
signed and unsigned 8-bit integers (Int8# and Word8 respectively) along
with basic arithmetic and comparison operations. PrimRep/RuntimeRep get
two new constructors for them. All of the primops translate into the
existing MachOPs.
For CmmCalls the codegen will now zero-extend the values at call
site (so that they can be moved to the right register) and then truncate
them back their original width.
x86 native codegen needed some updates, since it wasn't able to deal
with the new widths, but all the changes are quite localized. LLVM
backend seems to just work.
This is the second attempt at merging this, after the first attempt in
D4475 had to be backed out due to regressions on i386.
Bumps binary submodule.
Signed-off-by: Michal Terepeta <michal.terepeta@gmail.com>
Test Plan: ./validate (on both x86-{32,64})
Reviewers: bgamari, hvr, goldfire, simonmar
Subscribers: rwbarton, carter
Differential Revision: https://phabricator.haskell.org/D5258
Diffstat (limited to 'includes')
| -rw-r--r-- | includes/CodeGen.Platform.hs | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/includes/CodeGen.Platform.hs b/includes/CodeGen.Platform.hs index 8e93690038..664942d878 100644 --- a/includes/CodeGen.Platform.hs +++ b/includes/CodeGen.Platform.hs @@ -837,15 +837,16 @@ freeReg :: RegNo -> Bool # if defined(MACHREGS_i386) freeReg esp = False -- %esp is the C stack pointer -freeReg esi = False -- Note [esi/edi not allocatable] +freeReg esi = False -- Note [esi/edi/ebp not allocatable] freeReg edi = False +freeReg ebp = False # endif # if defined(MACHREGS_x86_64) freeReg rsp = False -- %rsp is the C stack pointer # endif {- -Note [esi/edi not allocatable] +Note [esi/edi/ebp not allocatable] %esi is mapped to R1, so %esi would normally be allocatable while it is not being used for R1. However, %esi has no 8-bit version on x86, @@ -855,7 +856,7 @@ graph-colouring allocator also cannot handle this - it was designed with more flexibility in mind, but the current implementation is restricted to the same set of classes as the linear allocator. -Hence, on x86 esi and edi are treated as not allocatable. +Hence, on x86 esi, edi and ebp are treated as not allocatable. -} -- split patterns in two functions to prevent overlaps |