diff options
| author | Michel Danzer <michel.daenzer@amd.com> | 2013-03-22 14:09:10 +0000 |
|---|---|---|
| committer | Michel Danzer <michel.daenzer@amd.com> | 2013-03-22 14:09:10 +0000 |
| commit | c446baa0be1ed2a3bf157519f89a65d348aad17c (patch) | |
| tree | 40af58e0c83b2a9a0c99ade02c590b93556fb32b /lib/Target/R600/R600Instructions.td | |
| parent | 3016056769639878b4f152838f0cf16d2e482339 (diff) | |
R600: Use legacy (0 * anything = 0) MUL instructions for pow intrinsics
Fixes wrong lighting in some corner cases with r600g and radeonsi, e.g.
manifested by failure of two piglit/glean tests and intermittent black
patches in many apps.
Tested on SI and RS880.
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=62012 [radeonsi]
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=58150 [r600g]
NOTE: This is a candidate for the Mesa stable branch.
Reviewed-by: Christian König <christian.koenig@amd.com>
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@177730 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Target/R600/R600Instructions.td')
| -rw-r--r-- | lib/Target/R600/R600Instructions.td | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/lib/Target/R600/R600Instructions.td b/lib/Target/R600/R600Instructions.td index 8c50d54cf5..a6daadfffa 100644 --- a/lib/Target/R600/R600Instructions.td +++ b/lib/Target/R600/R600Instructions.td @@ -1141,6 +1141,7 @@ let Predicates = [isR600] in { def RECIP_UINT_r600 : RECIP_UINT_Common <0x78>; defm DIV_r600 : DIV_Common<RECIP_IEEE_r600>; + def : POW_Common <LOG_IEEE_r600, EXP_IEEE_r600, MUL, R600_Reg32>; def TGSI_LIT_Z_r600 : TGSI_LIT_Z_Common<MUL_LIT_r600, LOG_CLAMPED_r600, EXP_IEEE_r600>; def : Pat<(fsqrt R600_Reg32:$src), @@ -1212,6 +1213,7 @@ def RECIPSQRT_IEEE_eg : RECIPSQRT_IEEE_Common<0x89>; def SIN_eg : SIN_Common<0x8D>; def COS_eg : COS_Common<0x8E>; +def : POW_Common <LOG_IEEE_eg, EXP_IEEE_eg, MUL, R600_Reg32>; def : SIN_PAT <SIN_eg>; def : COS_PAT <COS_eg>; def : Pat<(fsqrt R600_Reg32:$src), @@ -1540,13 +1542,14 @@ def MULLO_UINT_cm : MULLO_UINT_Common<0x91>; def MULHI_UINT_cm : MULHI_UINT_Common<0x92>; def RECIPSQRT_CLAMPED_cm : RECIPSQRT_CLAMPED_Common<0x87>; def EXP_IEEE_cm : EXP_IEEE_Common<0x81>; -def LOG_IEEE_ : LOG_IEEE_Common<0x83>; +def LOG_IEEE_cm : LOG_IEEE_Common<0x83>; def RECIP_CLAMPED_cm : RECIP_CLAMPED_Common<0x84>; def RECIPSQRT_IEEE_cm : RECIPSQRT_IEEE_Common<0x89>; def SIN_cm : SIN_Common<0x8D>; def COS_cm : COS_Common<0x8E>; } // End isVector = 1 +def : POW_Common <LOG_IEEE_cm, EXP_IEEE_cm, MUL, R600_Reg32>; def : SIN_PAT <SIN_cm>; def : COS_PAT <COS_cm>; |