diff options
| author | Tom Stellard <thomas.stellard@amd.com> | 2014-01-22 21:55:46 +0000 |
|---|---|---|
| committer | Tom Stellard <thomas.stellard@amd.com> | 2014-01-22 21:55:46 +0000 |
| commit | efa1355495c836f13f98efbb27a99a4aabd60598 (patch) | |
| tree | aa40f7c618f3ac713ebf749a9968f23ec2d0654b /lib/Target/R600/Processors.td | |
| parent | 39210ac1c62c9d6c055d8450ed52c09d094d9b85 (diff) | |
R600: Add work-around for the CF stack entry HW bug
The CF stack can be corrupted if you use CF_ALU_PUSH_BEFORE,
CF_ALU_ELSE_AFTER, CF_ALU_BREAK, or CF_ALU_CONTINUE when the number of
sub-entries on the stack is greater than or equal to the stack entry
size and sub-entries modulo 4 is either 0 or 3 (on cedar the bug is
present when number of sub-entries module 8 is either 7 or 0)
We choose to be conservative and always apply the work-around when the
number of sub-enries is greater than or equal to the stack entry size,
so that we can safely over-allocate the stack when we are unsure of the
stack allocation rules.
reviewed-by: Vincent Lejeune <vljn at ovi.com>
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@199842 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Target/R600/Processors.td')
| -rw-r--r-- | lib/Target/R600/Processors.td | 14 |
1 files changed, 8 insertions, 6 deletions
diff --git a/lib/Target/R600/Processors.td b/lib/Target/R600/Processors.td index e601f353163..fde44814970 100644 --- a/lib/Target/R600/Processors.td +++ b/lib/Target/R600/Processors.td @@ -46,13 +46,15 @@ def : Proc<"rv770", R600_VLIW5_Itin, //===----------------------------------------------------------------------===// def : Proc<"cedar", R600_VLIW5_Itin, - [FeatureEvergreen, FeatureVertexCache, FeatureWavefrontSize32]>; + [FeatureEvergreen, FeatureVertexCache, FeatureWavefrontSize32, + FeatureCFALUBug]>; def : Proc<"redwood", R600_VLIW5_Itin, - [FeatureEvergreen, FeatureVertexCache, FeatureWavefrontSize64]>; + [FeatureEvergreen, FeatureVertexCache, FeatureWavefrontSize64, + FeatureCFALUBug]>; def : Proc<"sumo", R600_VLIW5_Itin, - [FeatureEvergreen, FeatureWavefrontSize64]>; + [FeatureEvergreen, FeatureWavefrontSize64, FeatureCFALUBug]>; def : Proc<"juniper", R600_VLIW5_Itin, [FeatureEvergreen, FeatureVertexCache, FeatureWavefrontSize64]>; @@ -66,13 +68,13 @@ def : Proc<"cypress", R600_VLIW5_Itin, //===----------------------------------------------------------------------===// def : Proc<"barts", R600_VLIW5_Itin, - [FeatureNorthernIslands, FeatureVertexCache]>; + [FeatureNorthernIslands, FeatureVertexCache, FeatureCFALUBug]>; def : Proc<"turks", R600_VLIW5_Itin, - [FeatureNorthernIslands, FeatureVertexCache]>; + [FeatureNorthernIslands, FeatureVertexCache, FeatureCFALUBug]>; def : Proc<"caicos", R600_VLIW5_Itin, - [FeatureNorthernIslands]>; + [FeatureNorthernIslands, FeatureCFALUBug]>; def : Proc<"cayman", R600_VLIW4_Itin, [FeatureNorthernIslands, FeatureFP64, FeatureCaymanISA]>; |