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More varied support for constant vectors from C++ backend.

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If we have a vector of all zeros, a __setzero_* function call is emitted,
permitting calling specialized intrinsics for this.  Undefined values
are reflected with an __undef_* call, which similarly allows passing that
information along.

This change also includes a cleanup to the signature of the __smear_*
functions; since they already have different names depending on the
scalar value type, we don't need to use the trick of passing an
undefined value of the return vector type as the first parameter as
an indirect way to overload by return value.

Issue #317.
This commit is contained in:
Matt Pharr
2012-07-05 20:19:11 -07:00
parent ac421f68e2
commit 0d3993fa25
7 changed files with 330 additions and 104 deletions
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26
builtins/target-generic-common.ll
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@@ -39,12 +39,26 @@ reduce_equal(WIDTH)
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; broadcast/rotate/shuffle
declare <WIDTH x float> @__smear_float(<WIDTH x float>, float) nounwind readnone
declare <WIDTH x double> @__smear_double(<WIDTH x double>, double) nounwind readnone
declare <WIDTH x i8> @__smear_i8(<WIDTH x i8>, i8) nounwind readnone
declare <WIDTH x i16> @__smear_i16(<WIDTH x i16>, i16) nounwind readnone
declare <WIDTH x i32> @__smear_i32(<WIDTH x i32>, i32) nounwind readnone
declare <WIDTH x i64> @__smear_i64(<WIDTH x i64>, i64) nounwind readnone
declare <WIDTH x float> @__smear_float(float) nounwind readnone
declare <WIDTH x double> @__smear_double(double) nounwind readnone
declare <WIDTH x i8> @__smear_i8(i8) nounwind readnone
declare <WIDTH x i16> @__smear_i16(i16) nounwind readnone
declare <WIDTH x i32> @__smear_i32(i32) nounwind readnone
declare <WIDTH x i64> @__smear_i64(i64) nounwind readnone
declare <WIDTH x float> @__setzero_float() nounwind readnone
declare <WIDTH x double> @__setzero_double() nounwind readnone
declare <WIDTH x i8> @__setzero_i8() nounwind readnone
declare <WIDTH x i16> @__setzero_i16() nounwind readnone
declare <WIDTH x i32> @__setzero_i32() nounwind readnone
declare <WIDTH x i64> @__setzero_i64() nounwind readnone
declare <WIDTH x float> @__undef_float() nounwind readnone
declare <WIDTH x double> @__undef_double() nounwind readnone
declare <WIDTH x i8> @__undef_i8() nounwind readnone
declare <WIDTH x i16> @__undef_i16() nounwind readnone
declare <WIDTH x i32> @__undef_i32() nounwind readnone
declare <WIDTH x i64> @__undef_i64() nounwind readnone
declare <WIDTH x float> @__broadcast_float(<WIDTH x float>, i32) nounwind readnone
declare <WIDTH x double> @__broadcast_double(<WIDTH x double>, i32) nounwind readnone