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llvm-mirror/test/Analysis/CostModel/AArch64/cost-scalable-vector-gep.ll
Joe Ellis a376939c97 [SVE][AArch64] Fix TypeSize warning in GEP cost analysis
The warning would fire when calling getGEPCost for analyzing the cost of
a GEP instruction. This would result in the use of the now deprecated
implicit cast of TypeSize to uint64_t through the overloaded operator.

This patch fixes the issue by using getKnownMinSize instead of the
implicit cast. This is possible because the code is already
scalable-vector aware. The semantic behaviour of the code is unchanged
by this patch.

Reviewed By: sdesmalen, fpetrogalli

Differential Revision: https://reviews.llvm.org/D89872
2020-10-26 17:40:19 +00:00

16 lines
790 B
LLVM

; RUN: opt -cost-model -analyze -mtriple=aarch64--linux-gnu -mattr=+sve < %s 2>%t | FileCheck %s
; RUN: FileCheck --check-prefix=WARN --allow-empty %s < %t
; This regression test is verifying that a GEP instruction performed on a
; scalable vector does not produce a 'assumption that TypeSize is not scalable'
; warning when performing cost analysis.
; If this check fails please read test/CodeGen/AArch64/README for instructions on how to resolve it.
; WARN-NOT: warning: {{.*}}TypeSize is not scalable
; CHECK: Cost Model: Found an estimated cost of 1 for instruction: %retval = getelementptr
define <vscale x 16 x i8>* @gep_scalable_vector(<vscale x 16 x i8>* %ptr) {
%retval = getelementptr <vscale x 16 x i8>, <vscale x 16 x i8>* %ptr, i32 2
ret <vscale x 16 x i8>* %retval
}