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Add comments near load pattern fragments indicating that all integer vector loads are promoted to v2i64 or v4i64 so that no one tries to reintroduce pattern fragments for other types.

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llvm-svn: 148771
This commit is contained in:
Craig Topper 2012-01-24 03:03:17 +00:00
parent 3be662b372
commit 7311a89449
1 changed files with 6 additions and 0 deletions
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6
lib/Target/X86/X86InstrFragmentsSIMD.td
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@ -176,11 +176,13 @@ def sdmem : Operand<v2f64> {
//===----------------------------------------------------------------------===//
// 128-bit load pattern fragments
// NOTE: all 128-bit integer vector loads are promoted to v2i64
def loadv4f32 : PatFrag<(ops node:$ptr), (v4f32 (load node:$ptr))>;
def loadv2f64 : PatFrag<(ops node:$ptr), (v2f64 (load node:$ptr))>;
def loadv2i64 : PatFrag<(ops node:$ptr), (v2i64 (load node:$ptr))>;
// 256-bit load pattern fragments
// NOTE: all 256-bit integer vector loads are promoted to v4i64
def loadv8f32 : PatFrag<(ops node:$ptr), (v8f32 (load node:$ptr))>;
def loadv4f64 : PatFrag<(ops node:$ptr), (v4f64 (load node:$ptr))>;
def loadv4i64 : PatFrag<(ops node:$ptr), (v4i64 (load node:$ptr))>;
@ -213,6 +215,7 @@ def alignedloadfsf64 : PatFrag<(ops node:$ptr),
(f64 (alignedload node:$ptr))>;
// 128-bit aligned load pattern fragments
// NOTE: all 128-bit integer vector loads are promoted to v2i64
def alignedloadv4f32 : PatFrag<(ops node:$ptr),
(v4f32 (alignedload node:$ptr))>;
def alignedloadv2f64 : PatFrag<(ops node:$ptr),
@ -221,6 +224,7 @@ def alignedloadv2i64 : PatFrag<(ops node:$ptr),
(v2i64 (alignedload node:$ptr))>;
// 256-bit aligned load pattern fragments
// NOTE: all 256-bit integer vector loads are promoted to v4i64
def alignedloadv8f32 : PatFrag<(ops node:$ptr),
(v8f32 (alignedload256 node:$ptr))>;
def alignedloadv4f64 : PatFrag<(ops node:$ptr),
@ -243,11 +247,13 @@ def memopfsf32 : PatFrag<(ops node:$ptr), (f32 (memop node:$ptr))>;
def memopfsf64 : PatFrag<(ops node:$ptr), (f64 (memop node:$ptr))>;
// 128-bit memop pattern fragments
// NOTE: all 128-bit integer vector loads are promoted to v2i64
def memopv4f32 : PatFrag<(ops node:$ptr), (v4f32 (memop node:$ptr))>;
def memopv2f64 : PatFrag<(ops node:$ptr), (v2f64 (memop node:$ptr))>;
def memopv2i64 : PatFrag<(ops node:$ptr), (v2i64 (memop node:$ptr))>;
// 256-bit memop pattern fragments
// NOTE: all 256-bit integer vector loads are promoted to v4i64
def memopv8f32 : PatFrag<(ops node:$ptr), (v8f32 (memop node:$ptr))>;
def memopv4f64 : PatFrag<(ops node:$ptr), (v4f64 (memop node:$ptr))>;
def memopv4i64 : PatFrag<(ops node:$ptr), (v4i64 (memop node:$ptr))>;